Formatting check in test workflow

.github/format.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -e
+
+cd ..
+
+swift format --recursive --in-place .

.github/workflows/test.yml

@@ -21,4 +21,19 @@ jobs:
         run: swift build -Xswiftc -warnings-as-errors --enable-experimental-prebuilts
 
       - name: Run Tests
-        run: swift test -Xswiftc -warnings-as-errors --enable-experimental-prebuilts
+        run: swift test -Xswiftc -warnings-as-errors --enable-experimental-prebuilts
+  format:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Run formatter
+        run: sh .github/format.sh
+
+      - name: Check if formatting changes exist
+        run: |
+          if [ -n "$(git status --porcelain)" ]; then
+            echo "Formatting changes detected."
+            exit 1
+          fi

Package.swift

@@ -18,7 +18,7 @@ let package = Package(
   ],
   dependencies: [
     .package(url: "https://github.com/num42/swift-macrotester.git", from: "1.0.3"),
-    .package(url: "https://github.com/swiftlang/swift-syntax.git", from: "601.0.1")
+    .package(url: "https://github.com/swiftlang/swift-syntax.git", from: "601.0.1"),
   ],
   targets: [
     // Targets are the basic building blocks of a package, defining a module or a test suite.
@@ -28,23 +28,23 @@ let package = Package(
       name: "\(name)Macros",
       dependencies: [
         .product(name: "SwiftSyntaxMacros", package: "swift-syntax"),
-        .product(name: "SwiftCompilerPlugin", package: "swift-syntax")
+        .product(name: "SwiftCompilerPlugin", package: "swift-syntax"),
       ]
     ),
     // Library that exposes a macro as part of its API, which is used in client programs.
     .target(
       name: name,
-      dependencies: [.target(name:"\(name)Macros")]
+      dependencies: [.target(name: "\(name)Macros")]
     ),
     // A test target used to develop the macro implementation.
     .testTarget(
       name: "\(name)Tests",
       dependencies: [
-        .target(name:"\(name)Macros"),
+        .target(name: "\(name)Macros"),
         .product(name: "SwiftSyntaxMacrosTestSupport", package: "swift-syntax"),
-        .product(name: "MacroTester", package: "swift-macrotester")
+        .product(name: "MacroTester", package: "swift-macrotester"),
       ],
       resources: [.copy("Resources")]
-    )
+    ),
   ]
 )

Sources/MemberwiseInitializer/MemberwiseInitializer.swift

@@ -1,2 +1,3 @@
 @attached(member, names: named(init))
-public macro MemberwiseInitializer() = #externalMacro(module: "MemberwiseInitializerMacros", type: "MemberwiseInitializerMacro")
+public macro MemberwiseInitializer() =
+  #externalMacro(module: "MemberwiseInitializerMacros", type: "MemberwiseInitializerMacro")

Sources/MemberwiseInitializerMacros/MemberwiseInitializerMacro.swift

@@ -21,12 +21,15 @@ public struct MemberwiseInitializerMacro: MemberMacro {
       .flatMap(\.bindings)
       .filter { $0.accessorBlock == nil }
 
-    let parameters = bindings.map { "\($0.pattern): \($0.typeAnnotation!.type)" }.joined(separator: ", ")
+    let parameters = bindings.map { "\($0.pattern): \($0.typeAnnotation!.type)" }.joined(
+      separator: ", ")
     let header = SyntaxNodeString(stringLiteral: "public init(\(parameters))")
 
     let initializer = try! InitializerDeclSyntax(header) {
       CodeBlockItemListSyntax(
-        bindings.map { "self.\($0.pattern) = \($0.pattern)" }.map { CodeBlockItemListSyntax.Element(stringLiteral: $0) }
+        bindings.map { "self.\($0.pattern) = \($0.pattern)" }.map {
+          CodeBlockItemListSyntax.Element(stringLiteral: $0)
+        }
       )
     }