Update testing framework for C#

Merge duplicate code under a new class CXXMethodDeclarationCSharpTest

Author: ds5678

tests/ClangSharp.PInvokeGenerator.UnitTests/Base/CXXMethodDeclarationCSharpTest.cs

@@ -25,6 +25,9 @@ public abstract class CXXMethodDeclarationTest : PInvokeGeneratorTest
     [Test]
     public Task InstanceTest() => InstanceTestImpl();
 
+    [Test]
+    public Task MacrosExpansionTest() => MacrosExpansionTestImpl();
+
     [Test]
     public Task MemberCallTest() => MemberCallTestImpl();
 
@@ -64,46 +67,6 @@ public abstract class CXXMethodDeclarationTest : PInvokeGeneratorTest
     [Test]
     public Task VirtualWithVtblIndexAttributeTest() => VirtualWithVtblIndexAttributeTestImpl();
 
-    [Test]
-    public virtual Task MacrosExpansionTest()
-    {
-        var inputContents = @"typedef struct
-{
-	unsigned char *buf;
-	int size;
-} context_t;
-
-int buf_close(void *pContext)
-{
-	((context_t*)pContext)->buf=0;
-	return 0;
-}
-";
-
-        var expectedOutputContents = @"namespace ClangSharp.Test
-{
-    public unsafe partial struct context_t
-    {
-        [NativeTypeName(""unsigned char *"")]
-        public byte* buf;
-
-        public int size;
-    }
-
-    public static unsafe partial class Methods
-    {
-        public static int buf_close(void* pContext)
-        {
-            ((context_t*)(pContext))->buf = null;
-            return 0;
-        }
-    }
-}
-";
-
-        return ValidateBindingsAsync(inputContents, expectedOutputContents);
-    }
-
     protected abstract Task ConstructorTestImpl();
 
     protected abstract Task ConstructorWithInitializeTestImpl();
@@ -116,6 +79,8 @@ public static int buf_close(void* pContext)
 
     protected abstract Task InstanceTestImpl();
 
+    protected abstract Task MacrosExpansionTestImpl();
+
     protected abstract Task MemberCallTestImpl();
 
     protected abstract Task MemberTestImpl();

tests/ClangSharp.PInvokeGenerator.UnitTests/Base/CXXMethodDeclarationTest.cs

@@ -1,25 +1,23 @@
 // Copyright (c) .NET Foundation and Contributors. All Rights Reserved. Licensed under the MIT License (MIT). See License.md in the repository root for more information.
 
 using System.Threading.Tasks;
-using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
 public abstract class CXXMethodDeclarationXmlTest: CXXMethodDeclarationTest
 {
-    [Test]
-    public override Task MacrosExpansionTest()
+    protected override Task MacrosExpansionTestImpl()
     {
         var inputContents = @"typedef struct
 {
-	unsigned char *buf;
-	int size;
+    unsigned char *buf;
+    int size;
 } context_t;
 
 int buf_close(void *pcontext)
 {
-	((context_t*)pcontext)->buf=0;
-	return 0;
+    ((context_t*)pcontext)->buf=0;
+    return 0;
 }
 ";