Add test case for deleting custom attributes using ApplyUpdate (#56644)

* Add test case for deleting custom attributes using ApplyUpdate

Issue: https://github.com/dotnet/runtime/issues/54284

* Fix mono failures

src/libraries/System.Runtime.Loader/tests/ApplyUpdate/System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete/CustomAttributeDelete.cs

+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+using System;
+
+
+namespace System.Reflection.Metadata.ApplyUpdate.Test
+{
+    [AttributeUsage (AttributeTargets.Method, AllowMultiple=true)]
+    public class MyDeleteAttribute : Attribute
+    {
+        public MyDeleteAttribute (string stringValue) { StringValue = stringValue; }
+
+        public MyDeleteAttribute (Type typeValue) { TypeValue = typeValue; }
+
+        public MyDeleteAttribute (int x) { IntValue = x; }
+
+        public string StringValue { get; set; }
+        public Type TypeValue {get; set; }
+        public int IntValue {get; set; }
+    }
+
+    public class ClassWithCustomAttributeDelete
+    {
+        [MyDeleteAttribute ("abcd")]
+        public static string Method1 () => null;
+
+        [MyDeleteAttribute (typeof(Exception))]
+        public static string Method2 () => null;
+
+        [MyDeleteAttribute (42, StringValue = "hijkl", TypeValue = typeof(Type))]
+        [MyDeleteAttribute (17, StringValue = "", TypeValue = typeof(object))]
+        public static string Method3 () => null;
+
+    }
+}

src/libraries/System.Runtime.Loader/tests/ApplyUpdate/System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete/CustomAttributeDelete_v1.cs

+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+using System;
+
+
+namespace System.Reflection.Metadata.ApplyUpdate.Test
+{
+    [AttributeUsage (AttributeTargets.Method, AllowMultiple=true)]
+    public class MyDeleteAttribute : Attribute
+    {
+        public MyDeleteAttribute (string stringValue) { StringValue = stringValue; }
+
+        public MyDeleteAttribute (Type typeValue) { TypeValue = typeValue; }
+
+        public MyDeleteAttribute (int x) { IntValue = x; }
+
+        public string StringValue { get; set; }
+        public Type TypeValue {get; set; }
+        public int IntValue {get; set; }
+    }
+
+    public class ClassWithCustomAttributeDelete
+    {
+        public static string Method1 () => null;
+
+        public static string Method2 () => null;
+
+        [MyDeleteAttribute (17, StringValue = "Not Deleted", TypeValue = typeof(object))]
+        public static string Method3 () => null;
+    }
+}

src/libraries/System.Runtime.Loader/tests/ApplyUpdate/System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete/System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <RootNamespace>System.Runtime.Loader.Tests</RootNamespace>
+    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
+    <TestRuntime>true</TestRuntime>
+    <DeltaScript>deltascript.json</DeltaScript>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="CustomAttributeDelete.cs" />
+  </ItemGroup>
+</Project>

src/libraries/System.Runtime.Loader/tests/ApplyUpdate/System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete/deltascript.json

+{
+    "changes": [
+        {"document": "CustomAttributeDelete.cs", "update": "CustomAttributeDelete_v1.cs"},
+    ]
+}
+

src/libraries/System.Runtime.Loader/tests/ApplyUpdateTest.cs

@@ -112,6 +112,46 @@ public void CustomAttributeUpdates()
             });
         }
 
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/52993", TestRuntimes.Mono)]
+        [ConditionalFact(typeof(ApplyUpdateUtil), nameof (ApplyUpdateUtil.IsSupported))]
+        public void CustomAttributeDelete()
+        {
+            // Test that deleting custom attribute on constructor/property works as expected.
+            ApplyUpdateUtil.TestCase(static () =>
+            {
+                var assm = typeof(System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributeDelete).Assembly;
+
+                ApplyUpdateUtil.ApplyUpdate(assm);
+                ApplyUpdateUtil.ClearAllReflectionCaches();
+
+                // Just check the updated value on one method
+
+                Type attrType = typeof(System.Reflection.Metadata.ApplyUpdate.Test.MyDeleteAttribute);
+                Type ty = assm.GetType("System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributeDelete");
+                Assert.NotNull(ty);
+
+                MethodInfo mi1 = ty.GetMethod(nameof(System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributeDelete.Method1), BindingFlags.Public | BindingFlags.Static);
+                Assert.NotNull(mi1);
+                Attribute[] cattrs = Attribute.GetCustomAttributes(mi1, attrType);
+                Assert.NotNull(cattrs);
+                Assert.Equal(0, cattrs.Length);
+
+                MethodInfo mi2 = ty.GetMethod(nameof(System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributeDelete.Method2), BindingFlags.Public | BindingFlags.Static);
+                Assert.NotNull(mi2);
+                cattrs = Attribute.GetCustomAttributes(mi2, attrType);
+                Assert.NotNull(cattrs);
+                Assert.Equal(0, cattrs.Length);
+
+                MethodInfo mi3 = ty.GetMethod(nameof(System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributeDelete.Method3), BindingFlags.Public | BindingFlags.Static);
+                Assert.NotNull(mi3);
+                cattrs = Attribute.GetCustomAttributes(mi3, attrType);
+                Assert.NotNull(cattrs);
+                Assert.Equal(1, cattrs.Length);
+                string p = (cattrs[0] as System.Reflection.Metadata.ApplyUpdate.Test.MyDeleteAttribute).StringValue;
+                Assert.Equal("Not Deleted", p);
+            });
+        }
+
         class NonRuntimeAssembly : Assembly
         {
         }

src/libraries/System.Runtime.Loader/tests/System.Runtime.Loader.Tests.csproj

@@ -23,15 +23,10 @@
     <EmbeddedResource Include="MainStrings*.resx" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="System.Runtime.Loader.Test.Assembly\System.Runtime.Loader.Test.Assembly.csproj"
-                      ReferenceOutputAssembly="false"
-                      OutputItemType="EmbeddedResource" />
-    <ProjectReference Include="System.Runtime.Loader.Test.Assembly2\System.Runtime.Loader.Test.Assembly2.csproj"
-                      ReferenceOutputAssembly="false"
-                      OutputItemType="EmbeddedResource" />
-    <ProjectReference Include="System.Runtime.Loader.Test.AssemblyNotSupported\System.Runtime.Loader.Test.AssemblyNotSupported.csproj"
-                      ReferenceOutputAssembly="false"
-                      OutputItemType="EmbeddedResource" />
+    <ProjectReference Include="ApplyUpdate\System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete\System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeDelete.csproj" />
+    <ProjectReference Include="System.Runtime.Loader.Test.Assembly\System.Runtime.Loader.Test.Assembly.csproj" ReferenceOutputAssembly="false" OutputItemType="EmbeddedResource" />
+    <ProjectReference Include="System.Runtime.Loader.Test.Assembly2\System.Runtime.Loader.Test.Assembly2.csproj" ReferenceOutputAssembly="false" OutputItemType="EmbeddedResource" />
+    <ProjectReference Include="System.Runtime.Loader.Test.AssemblyNotSupported\System.Runtime.Loader.Test.AssemblyNotSupported.csproj" ReferenceOutputAssembly="false" OutputItemType="EmbeddedResource" />
     <ProjectReference Include="ContextualReflectionDependency\System.Runtime.Loader.Test.ContextualReflectionDependency.csproj" />
     <ProjectReference Include="ReferencedClassLib\ReferencedClassLib.csproj" />
     <ProjectReference Include="ReferencedClassLibNeutralIsSatellite\ReferencedClassLibNeutralIsSatellite.csproj" />
@@ -48,35 +43,22 @@
     <TrimmerRootDescriptor Include="$(MSBuildThisFileDirectory)ILLink.Descriptors.xml" />
   </ItemGroup>
 
-  <Target Name="PreserveEnCAssembliesFromLinking"
-	  Condition="'$(TargetOS)' == 'Browser' and '$(EnableAggressiveTrimming)' == 'true'"
-	  BeforeTargets="ConfigureTrimming">
+  <Target Name="PreserveEnCAssembliesFromLinking" Condition="'$(TargetOS)' == 'Browser' and '$(EnableAggressiveTrimming)' == 'true'" BeforeTargets="ConfigureTrimming">
     <ItemGroup>
       <!-- Don't modify EnC test assemblies -->
-      <TrimmerRootAssembly
-          Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.MethodBody1.dll'))"
-          Include="%(ResolvedFileToPublish.FullPath)" />
-      <TrimmerRootAssembly
-          Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributes.dll'))"
-          Include="%(ResolvedFileToPublish.FullPath)" />
-      <TrimmerRootAssembly
-          Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeUpdate.dll'))"
-          Include="%(ResolvedFileToPublish.FullPath)" />
+      <TrimmerRootAssembly Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.MethodBody1.dll'))" Include="%(ResolvedFileToPublish.FullPath)" />
+      <TrimmerRootAssembly Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.ClassWithCustomAttributes.dll'))" Include="%(ResolvedFileToPublish.FullPath)" />
+      <TrimmerRootAssembly Condition="$([System.String]::Copy('%(ResolvedFileToPublish.FileName)%(ResolvedFileToPublish.Extension)').EndsWith('System.Reflection.Metadata.ApplyUpdate.Test.CustomAttributeUpdate.dll'))" Include="%(ResolvedFileToPublish.FullPath)" />
     </ItemGroup>
   </Target>
 
-  <Target Name="IncludeDeltasInWasmBundle"
-	  BeforeTargets="PrepareForWasmBuildApp"
-	  Condition="'$(TargetOS)' == 'Browser'">
+  <Target Name="IncludeDeltasInWasmBundle" BeforeTargets="PrepareForWasmBuildApp" Condition="'$(TargetOS)' == 'Browser'">
     <ItemGroup>
       <!-- FIXME: this belongs in eng/testing/tests.wasm.targets -->
       <!-- FIXME: Can we do something on the Content items in the referenced projects themselves to get this for free? -->
-      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)"
-				      Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dmeta'))" />
-      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)"
-				      Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dil'))" />
-      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)"
-				      Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dpdb'))" />
+      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)" Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dmeta'))" />
+      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)" Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dil'))" />
+      <WasmFilesToIncludeInFileSystem Include="@(PublishItemsOutputGroupOutputs)" Condition="$([System.String]::new('%(PublishItemsOutputGroupOutputs.Identity)').EndsWith('.dpdb'))" />
     </ItemGroup>
   </Target>
 </Project>