Fix issues with primary constructors in records (#1575)

* fix issues with primary constuctors in records

Author: daveMueller

Documentation/Changelog.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 
 ### Fixed
+-Uncovered lines in .NET 8 for inheriting records [#1555](https://github.com/coverlet-coverage/coverlet/issues/1555)
+-Fix record constructors not covered when SkipAutoProps is true [#1561](https://github.com/coverlet-coverage/coverlet/issues/1561)
 -Fix ExcludeFromCodeCoverage does not exclude method in a partial class [#1548](https://github.com/coverlet-coverage/coverlet/issues/1548) 
 -Fix ExcludeFromCodeCoverage does not exclude F# task [#1547](https://github.com/coverlet-coverage/coverlet/issues/1547) 
 -Fix issues where ExcludeFromCodeCoverage ignored [#1431](https://github.com/coverlet-coverage/coverlet/issues/1431)

src/coverlet.core/Instrumentation/Instrumenter.cs

@@ -470,7 +470,7 @@ private void InstrumentType(TypeDefinition type)
 
         if (actualMethod.IsGetter || actualMethod.IsSetter)
         {
-          if (_parameters.SkipAutoProps && actualMethod.CustomAttributes.Any(ca => ca.AttributeType.FullName == typeof(CompilerGeneratedAttribute).FullName))
+          if (_parameters.SkipAutoProps && IsCompilerGenerated(actualMethod))
           {
             continue;
           }
@@ -507,13 +507,18 @@ private void InstrumentType(TypeDefinition type)
       IEnumerable<MethodDefinition> ctors = type.GetConstructors();
       foreach (MethodDefinition ctor in ctors)
       {
-        if (!ctor.CustomAttributes.Any(IsExcludeAttribute))
+        if (!ctor.CustomAttributes.Any(IsExcludeAttribute) && !IsCompilerGenerated(ctor))
         {
           InstrumentMethod(ctor);
         }
       }
     }
 
+    private static bool IsCompilerGenerated(IMemberDefinition member)
+    {
+      return member.CustomAttributes.Any(ca => ca.AttributeType.FullName == typeof(CompilerGeneratedAttribute).FullName);
+    }
+
     private void InstrumentMethod(MethodDefinition method)
     {
       string sourceFile = method.DebugInformation.SequencePoints.Select(s => _sourceRootTranslator.ResolveFilePath(s.Document.Url)).FirstOrDefault();
@@ -679,7 +684,7 @@ private Instruction AddInstrumentationCode(MethodDefinition method, ILProcessor
             }
         );
 
-        if (method.DeclaringType.CustomAttributes.Any(x => x.AttributeType.FullName == typeof(CompilerGeneratedAttribute).FullName))
+        if (IsCompilerGenerated(method.DeclaringType))
         {
           if (_branchesInCompiledGeneratedClass == null)
           {

test/coverlet.core.tests/Coverage/CoverageTests.AutoProps.cs

@@ -84,7 +84,7 @@ public void SkipAutoPropsInRecords(bool skipAutoProps)
 
         if (skipAutoProps)
         {
-          TestInstrumentationHelper.GetCoverageResult(path).GenerateReport(show: true)
+          TestInstrumentationHelper.GetCoverageResult(path)
               .Document("Instrumentation.AutoProps.cs")
               .AssertNonInstrumentedLines(BuildConfiguration.Debug, 23, 24)
               .AssertNonInstrumentedLines(BuildConfiguration.Release, 23, 24)
@@ -106,7 +106,7 @@ public void SkipAutoPropsInRecords(bool skipAutoProps)
       }
     }
 
-    [Theory(Skip = "fails reason unknown (no session debug possible)")]
+    [Theory]
     [InlineData(true)]
     [InlineData(false)]
     public void SkipRecordWithProperties(bool skipAutoProps)
@@ -116,7 +116,7 @@ public void SkipRecordWithProperties(bool skipAutoProps)
       {
         FunctionExecutor.Run(async (string[] parameters) =>
         {
-          CoveragePrepareResult coveragePrepareResult = await TestInstrumentationHelper.Run<ClassWithAutoRecordProperties>(instance =>
+          CoveragePrepareResult coveragePrepareResult = await TestInstrumentationHelper.Run<ClassWithRecordsAutoProperties>(instance =>
                       {
                         return Task.CompletedTask;
                       },
@@ -133,14 +133,56 @@ public void SkipRecordWithProperties(bool skipAutoProps)
               .AssertNonInstrumentedLines(BuildConfiguration.Release, 29, 29)
               .AssertLinesCovered(BuildConfiguration.Debug, (32, 1), (33, 1), (34, 1))
               .AssertLinesCovered(BuildConfiguration.Release, (33, 1));
-
         }
         else
         {
           TestInstrumentationHelper.GetCoverageResult(path)
               .Document("Instrumentation.AutoProps.cs")
-              .AssertLinesCovered(BuildConfiguration.Debug, (29, 3), (31, 1), (32, 1), (33, 1), (34, 1))
-              .AssertLinesCovered(BuildConfiguration.Release, (29, 3), (31, 1), (33, 1));
+              .AssertLinesCovered(BuildConfiguration.Debug, (29, 1), (31, 1), (32, 1), (33, 1), (34, 1))
+              .AssertLinesCovered(BuildConfiguration.Release, (29, 1), (31, 1), (33, 1));
+        }
+      }
+      finally
+      {
+        File.Delete(path);
+      }
+    }
+
+    [Theory]
+    [InlineData(true)]
+    [InlineData(false)]
+    public void SkipInheritingRecordsWithProperties(bool skipAutoProps)
+    {
+      string path = Path.GetTempFileName();
+      try
+      {
+        FunctionExecutor.Run(async (string[] parameters) =>
+        {
+          CoveragePrepareResult coveragePrepareResult = await TestInstrumentationHelper.Run<ClassWithInheritingRecordsAndAutoProperties>(instance =>
+            {
+              return Task.CompletedTask;
+            },
+            persistPrepareResultToFile: parameters[0], skipAutoProps: bool.Parse(parameters[1]));
+
+          return 0;
+        }, new string[] { path, skipAutoProps.ToString() });
+
+        if (skipAutoProps)
+        {
+          TestInstrumentationHelper.GetCoverageResult(path)
+            .Document("Instrumentation.AutoProps.cs")
+            .AssertNonInstrumentedLines(BuildConfiguration.Debug, 39, 39)
+            .AssertNonInstrumentedLines(BuildConfiguration.Release, 39, 39)
+            .AssertLinesCovered(BuildConfiguration.Debug, (41, 1), (44, 1), (45, 1), (46, 1))
+            .AssertLinesCovered(BuildConfiguration.Release, (45, 1));
+
+        }
+        else
+        {
+          TestInstrumentationHelper.GetCoverageResult(path)
+            .Document("Instrumentation.AutoProps.cs")
+            .AssertLinesCovered(BuildConfiguration.Debug, (39, 1), (41, 1), (44, 1), (45, 1), (46, 1))
+            .AssertLinesCovered(BuildConfiguration.Release, (39, 1), (41, 1), (45, 1));
         }
       }
       finally

test/coverlet.core.tests/Samples/Instrumentation.AutoProps.cs

@@ -24,13 +24,27 @@ public RecordWithPropertyInit()
         public string RecordAutoPropsInit { get; set; } = string.Empty;
     }
 
-    public class ClassWithAutoRecordProperties
+    public class ClassWithRecordsAutoProperties
     {
-        record AutoRecordWithProperties(string Prop1, string Prop2);
+        record RecordWithPrimaryConstructor(string Prop1, string Prop2);
 
-        public ClassWithAutoRecordProperties()
+        public ClassWithRecordsAutoProperties()
         {
-            var record = new AutoRecordWithProperties(string.Empty, string.Empty);
+            var record = new RecordWithPrimaryConstructor(string.Empty, string.Empty);
         }
     }
+
+    public class ClassWithInheritingRecordsAndAutoProperties
+    {
+        record BaseRecord(int A);
+
+        record InheritedRecord(int A) : BaseRecord(A);
+
+        public ClassWithInheritingRecordsAndAutoProperties()
+        {
+            var record = new InheritedRecord(1);
+        }
+    }
+
+
 }