diff --git a/.travis.yml b/.travis.yml
index b0210d197..0b14e9a40 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,28 +1,36 @@
 language: objective-c
 osx_image: xcode7.3
+sudo: false
 
 script:
 
-- xcodebuild test -project ./All-Pairs\ Shortest\ Paths/APSP/APSP.xcodeproj -scheme APSPTests
-- xcodebuild test -project ./Array2D/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./AVL\ Tree/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Binary\ Search/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Binary\ Search\ Tree/Solution\ 1/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Bloom\ Filter/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Breadth-First\ Search/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Bucket\ Sort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Heap/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Heap\ Sort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Insertion\ Sort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./K-Means/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Linked\ List/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Longest\ Common\ Subsequence/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Priority\ Queue/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Queue/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Quicksort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Run-Length\ Encoding/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Select\ Minimum\ Maximum/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Selection\ Sort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Shell\ Sort/Tests/Tests.xcodeproj -scheme Tests
-- xcodebuild test -project ./Single-Source\ Shortest\ Paths\ \(Weighted\)/SSSP.xcodeproj -scheme SSSPTests
-- xcodebuild test -project ./Stack/Tests/Tests.xcodeproj -scheme Tests
\ No newline at end of file
+- xctool test -project ./All-Pairs\ Shortest\ Paths/APSP/APSP.xcodeproj -scheme APSPTests
+- xctool test -project ./Array2D/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./AVL\ Tree/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Binary\ Search/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Binary\ Search\ Tree/Solution\ 1/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Bloom\ Filter/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Bounded\ Priority\ Queue/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Breadth-First\ Search/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Bucket\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Counting\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Depth-First\ Search/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Graph/Graph.xcodeproj -scheme GraphTests
+- xctool test -project ./Heap/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Heap\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Insertion\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./K-Means/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Linked\ List/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Longest\ Common\ Subsequence/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Minimum\ Spanning\ Tree\ \(Unweighted\)/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Priority\ Queue/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Queue/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Quicksort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Run-Length\ Encoding/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Select\ Minimum\ Maximum/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Selection\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Shell\ Sort/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Shortest\ Path\ \(Unweighted\)/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Single-Source\ Shortest\ Paths\ \(Weighted\)/SSSP.xcodeproj -scheme SSSPTests
+- xctool test -project ./Stack/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Topological\ Sort/Tests/Tests.xcodeproj -scheme Tests
diff --git a/AVL Tree/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/AVL Tree/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/AVL Tree/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/AVL Tree/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/All-Pairs Shortest Paths/APSP/APSP.xcodeproj/xcshareddata/xcschemes/APSPTests.xcscheme b/All-Pairs Shortest Paths/APSP/APSP.xcodeproj/xcshareddata/xcschemes/APSPTests.xcscheme
index 867745024..cd141a407 100644
--- a/All-Pairs Shortest Paths/APSP/APSP.xcodeproj/xcshareddata/xcschemes/APSPTests.xcscheme	
+++ b/All-Pairs Shortest Paths/APSP/APSP.xcodeproj/xcshareddata/xcschemes/APSPTests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "493D8DDF1CDD2A1C0089795A"
+               BuildableName = "APSPTests.xctest"
+               BlueprintName = "APSPTests"
+               ReferencedContainer = "container:APSP.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "493D8DDF1CDD2A1C0089795A"
+            BuildableName = "APSPTests.xctest"
+            BlueprintName = "APSPTests"
+            ReferencedContainer = "container:APSP.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "493D8DDF1CDD2A1C0089795A"
+            BuildableName = "APSPTests.xctest"
+            BlueprintName = "APSPTests"
+            ReferencedContainer = "container:APSP.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Array2D/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Array2D/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Array2D/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/Array2D/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Binary Search Tree/Solution 1/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Binary Search Tree/Solution 1/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Binary Search Tree/Solution 1/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Binary Search Tree/Solution 1/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Binary Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Binary Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Binary Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Binary Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Bloom Filter/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Bloom Filter/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Bloom Filter/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Bloom Filter/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Bounded Priority Queue/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings b/Bounded Priority Queue/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
new file mode 100644
index 000000000..08de0be8d
--- /dev/null
+++ b/Bounded Priority Queue/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings	
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEWorkspaceSharedSettings_AutocreateContextsIfNeeded</key>
+	<false/>
+</dict>
+</plist>
diff --git a/Bounded Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Bounded Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
new file mode 100644
index 000000000..0416248f1
--- /dev/null
+++ b/Bounded Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "B80004B21C83E342001FE2D7"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "B80004B21C83E342001FE2D7"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "B80004B21C83E342001FE2D7"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "B80004B21C83E342001FE2D7"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Breadth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Breadth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Breadth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Breadth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Bucket Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Bucket Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Bucket Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Bucket Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Counting Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Counting Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Counting Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Counting Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Depth-First Search/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings b/Depth-First Search/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
new file mode 100644
index 000000000..08de0be8d
--- /dev/null
+++ b/Depth-First Search/Tests/Tests.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings	
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEWorkspaceSharedSettings_AutocreateContextsIfNeeded</key>
+	<false/>
+</dict>
+</plist>
diff --git a/Depth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Depth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
new file mode 100644
index 000000000..e5bd10d97
--- /dev/null
+++ b/Depth-First Search/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Graph/Graph.xcodeproj/xcshareddata/xcschemes/GraphTests.xcscheme b/Graph/Graph.xcodeproj/xcshareddata/xcschemes/GraphTests.xcscheme
index 8eb3c9fdf..b5a957429 100644
--- a/Graph/Graph.xcodeproj/xcshareddata/xcschemes/GraphTests.xcscheme
+++ b/Graph/Graph.xcodeproj/xcshareddata/xcschemes/GraphTests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "49BFA3061CDF886B00522D66"
+               BuildableName = "GraphTests.xctest"
+               BlueprintName = "GraphTests"
+               ReferencedContainer = "container:Graph.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "49BFA3061CDF886B00522D66"
+            BuildableName = "GraphTests.xctest"
+            BlueprintName = "GraphTests"
+            ReferencedContainer = "container:Graph.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "49BFA3061CDF886B00522D66"
+            BuildableName = "GraphTests.xctest"
+            BlueprintName = "GraphTests"
+            ReferencedContainer = "container:Graph.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Heap Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Heap Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Heap Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Heap Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Heap/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Heap/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Heap/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/Heap/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/How to Contribute.markdown b/How to Contribute.markdown
index dc1562327..9aa0b07ca 100644
--- a/How to Contribute.markdown	
+++ b/How to Contribute.markdown	
@@ -31,7 +31,7 @@ For the unit tests:
 - Add the unit test project to `.travis.yml` so they will be run on [Travis-CI](https://travis-ci.org/raywenderlich/swift-algorithm-club). Add a line to `.travis.yml` like this:
 
 ```
-- xcodebuild test -project ./Algorithm/Tests/Tests.xcodeproj -scheme Tests
+- xctool test -project ./Algorithm/Tests/Tests.xcodeproj -scheme Tests
 ```
 
 - Configure the Test project's scheme to run on Travis-CI:
diff --git a/Insertion Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Insertion Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Insertion Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Insertion Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/K-Means/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/K-Means/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 81f549cef..a563876e7 100644
--- a/K-Means/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/K-Means/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "B80894DF1C852D100018730E"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "B80894DF1C852D100018730E"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "B80894DF1C852D100018730E"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Linked List/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Linked List/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Linked List/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Linked List/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Longest Common Subsequence/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Longest Common Subsequence/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 19caeb2ad..3d7f342b3 100644
--- a/Longest Common Subsequence/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Longest Common Subsequence/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -9,9 +9,9 @@
          <BuildActionEntry
             buildForTesting = "YES"
             buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "4716C7A61C93750500F6C1C0"
@@ -39,6 +39,15 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "4716C7A61C93750500F6C1C0"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </TestAction>
diff --git a/Minimum Spanning Tree (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Minimum Spanning Tree (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Minimum Spanning Tree (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Minimum Spanning Tree (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Priority Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/Queue/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Quicksort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Quicksort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Quicksort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/Quicksort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Run-Length Encoding/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Run-Length Encoding/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Run-Length Encoding/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Run-Length Encoding/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Select Minimum Maximum/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Select Minimum Maximum/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Select Minimum Maximum/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Select Minimum Maximum/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Selection Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Selection Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Selection Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Selection Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Shell Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Shell Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Shell Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Shell Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Shortest Path (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Shortest Path (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Shortest Path (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Shortest Path (Unweighted)/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Single-Source Shortest Paths (Weighted)/SSSP.xcodeproj/xcshareddata/xcschemes/SSSPTests.xcscheme b/Single-Source Shortest Paths (Weighted)/SSSP.xcodeproj/xcshareddata/xcschemes/SSSPTests.xcscheme
index 38b6c1697..6efceaf20 100644
--- a/Single-Source Shortest Paths (Weighted)/SSSP.xcodeproj/xcshareddata/xcschemes/SSSPTests.xcscheme	
+++ b/Single-Source Shortest Paths (Weighted)/SSSP.xcodeproj/xcshareddata/xcschemes/SSSPTests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "49BFA29C1CDF86E100522D66"
+               BuildableName = "SSSPTests.xctest"
+               BlueprintName = "SSSPTests"
+               ReferencedContainer = "container:SSSP.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "49BFA29C1CDF86E100522D66"
+            BuildableName = "SSSPTests.xctest"
+            BlueprintName = "SSSPTests"
+            ReferencedContainer = "container:SSSP.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "49BFA29C1CDF86E100522D66"
+            BuildableName = "SSSPTests.xctest"
+            BlueprintName = "SSSPTests"
+            ReferencedContainer = "container:SSSP.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Stack/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Stack/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Stack/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
+++ b/Stack/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Topological Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Topological Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
index 74dd9450b..8ef8d8581 100644
--- a/Topological Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
+++ b/Topological Sort/Tests/Tests.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme	
@@ -5,6 +5,22 @@
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+               BuildableName = "Tests.xctest"
+               BlueprintName = "Tests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
    </BuildAction>
    <TestAction
       buildConfiguration = "Debug"
@@ -36,6 +52,15 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -45,6 +70,15 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "7B2BBC7F1C779D720067B71D"
+            BuildableName = "Tests.xctest"
+            BlueprintName = "Tests"
+            ReferencedContainer = "container:Tests.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
    </ProfileAction>
    <AnalyzeAction
       buildConfiguration = "Debug">
diff --git a/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme b/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
new file mode 100644
index 000000000..3eb165e19
--- /dev/null
+++ b/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Tests.xcscheme
@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "NO"
+            buildForArchiving = "NO"
+            buildForAnalyzing = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "E1E34DD11C7670250023AF4D"
+               BuildableName = "TreapTests.xctest"
+               BlueprintName = "TreapTests"
+               ReferencedContainer = "container:Treap.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "E1E34DD11C7670250023AF4D"
+               BuildableName = "TreapTests.xctest"
+               BlueprintName = "TreapTests"
+               ReferencedContainer = "container:Treap.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "E1E34DD11C7670250023AF4D"
+            BuildableName = "TreapTests.xctest"
+            BlueprintName = "TreapTests"
+            ReferencedContainer = "container:Treap.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "E1E34DD11C7670250023AF4D"
+            BuildableName = "TreapTests.xctest"
+            BlueprintName = "TreapTests"
+            ReferencedContainer = "container:Treap.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Treap.xcscheme b/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Treap.xcscheme
new file mode 100644
index 000000000..566c370e1
--- /dev/null
+++ b/Treap/Treap/Treap.xcodeproj/xcshareddata/xcschemes/Treap.xcscheme
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "E1E34DC21C7670240023AF4D"
+               BuildableName = "Treap.app"
+               BlueprintName = "Treap"
+               ReferencedContainer = "container:Treap.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "E1E34DD11C7670250023AF4D"
+               BuildableName = "TreapTests.xctest"
+               BlueprintName = "TreapTests"
+               ReferencedContainer = "container:Treap.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "E1E34DC21C7670240023AF4D"
+            BuildableName = "Treap.app"
+            BlueprintName = "Treap"
+            ReferencedContainer = "container:Treap.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "E1E34DC21C7670240023AF4D"
+            BuildableName = "Treap.app"
+            BlueprintName = "Treap"
+            ReferencedContainer = "container:Treap.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "E1E34DC21C7670240023AF4D"
+            BuildableName = "Treap.app"
+            BlueprintName = "Treap"
+            ReferencedContainer = "container:Treap.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>