Resolving various Linux test failures

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

@@ -3,9 +3,11 @@
 using System;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_CXXMethodDeclarationTest : CXXMethodDeclarationTest
 {
     protected override Task ConstructorTestImpl()
@@ -425,19 +427,19 @@ public unsafe partial struct MyStruct
         public void** lpVtbl;
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType(MyStruct* pThis, int objA, int objB);
+        public delegate int _GetType(MyStruct* pThis, int obj);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
         public delegate int _GetType1(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType2(MyStruct* pThis, int obj);
+        public delegate int _GetType2(MyStruct* pThis, int objA, int objB);
 
-        public int GetType(int objA, int objB)
+        public int GetType(int obj)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType>((IntPtr)(lpVtbl[0]))(pThis, objA, objB);
+                return Marshal.GetDelegateForFunctionPointer<_GetType>((IntPtr)(lpVtbl[0]))(pThis, obj);
             }}
         }}
 
@@ -449,11 +451,11 @@ public new int GetType()
             }}
         }}
 
-        public int GetType(int obj)
+        public int GetType(int objA, int objB)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType2>((IntPtr)(lpVtbl[2]))(pThis, obj);
+                return Marshal.GetDelegateForFunctionPointer<_GetType2>((IntPtr)(lpVtbl[2]))(pThis, objA, objB);
             }}
         }}
     }}
@@ -489,19 +491,19 @@ public unsafe partial struct MyStruct
         public Vtbl* lpVtbl;
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType(MyStruct* pThis, int objA, int objB);
+        public delegate int _GetType(MyStruct* pThis, int obj);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
         public delegate int _GetType1(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType2(MyStruct* pThis, int obj);
+        public delegate int _GetType2(MyStruct* pThis, int objA, int objB);
 
-        public int GetType(int objA, int objB)
+        public int GetType(int obj)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType>(lpVtbl->GetType)(pThis, objA, objB);
+                return Marshal.GetDelegateForFunctionPointer<_GetType>(lpVtbl->GetType)(pThis, obj);
             }}
         }}
 
@@ -513,23 +515,23 @@ public new int GetType()
             }}
         }}
 
-        public int GetType(int obj)
+        public int GetType(int objA, int objB)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType2>(lpVtbl->GetType2)(pThis, obj);
+                return Marshal.GetDelegateForFunctionPointer<_GetType2>(lpVtbl->GetType2)(pThis, objA, objB);
             }}
         }}
 
         public partial struct Vtbl
         {{
-            [NativeTypeName(""int (int, int){nativeCallConv}"")]
+            [NativeTypeName(""int (int){nativeCallConv}"")]
             public new IntPtr GetType;
 
             [NativeTypeName(""int (){nativeCallConv}"")]
             public IntPtr GetType1;
 
-            [NativeTypeName(""int (int){nativeCallConv}"")]
+            [NativeTypeName(""int (int, int){nativeCallConv}"")]
             public IntPtr GetType2;
         }}
     }}
@@ -565,19 +567,19 @@ public unsafe partial struct MyStruct : MyStruct.Interface
         public Vtbl* lpVtbl;
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType(MyStruct* pThis, int objA, int objB);
+        public delegate int _GetType(MyStruct* pThis, int obj);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
         public delegate int _GetType1(MyStruct* pThis);
 
         [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
-        public delegate int _GetType2(MyStruct* pThis, int obj);
+        public delegate int _GetType2(MyStruct* pThis, int objA, int objB);
 
-        public int GetType(int objA, int objB)
+        public int GetType(int obj)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType>(lpVtbl->GetType)(pThis, objA, objB);
+                return Marshal.GetDelegateForFunctionPointer<_GetType>(lpVtbl->GetType)(pThis, obj);
             }}
         }}
 
@@ -589,32 +591,32 @@ public new int GetType()
             }}
         }}
 
-        public int GetType(int obj)
+        public int GetType(int objA, int objB)
         {{
             fixed (MyStruct* pThis = &this)
             {{
-                return Marshal.GetDelegateForFunctionPointer<_GetType2>(lpVtbl->GetType2)(pThis, obj);
+                return Marshal.GetDelegateForFunctionPointer<_GetType2>(lpVtbl->GetType2)(pThis, objA, objB);
             }}
         }}
 
         public interface Interface
         {{
-            int GetType(int objA, int objB);
+            int GetType(int obj);
 
             int GetType();
 
-            int GetType(int obj);
+            int GetType(int objA, int objB);
         }}
 
         public partial struct Vtbl
         {{
-            [NativeTypeName(""int (int, int){nativeCallConv}"")]
+            [NativeTypeName(""int (int){nativeCallConv}"")]
             public new IntPtr GetType;
 
             [NativeTypeName(""int (){nativeCallConv}"")]
             public IntPtr GetType1;
 
-            [NativeTypeName(""int (int){nativeCallConv}"")]
+            [NativeTypeName(""int (int, int){nativeCallConv}"")]
             public IntPtr GetType2;
         }}
     }}

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/DeprecatedToObsoleteTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_DeprecatedToObsoleteTest : DeprecatedToObsoleteTest
 {
     protected override Task SimpleStructMembersImpl(string nativeType, string expectedManagedType)

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/EnumDeclarationTest.cs

@@ -2,9 +2,11 @@
 
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_EnumDeclarationTest : EnumDeclarationTest
 {
     protected override Task BasicTestImpl()
@@ -572,7 +574,7 @@ public enum MyEnum2
 
     public static partial class Methods
     {
-        public const int MyEnum1_Value1 = 1;
+        public const uint MyEnum1_Value1 = 1;
     }
 }
 ";
@@ -595,7 +597,7 @@ protected override Task WithReferenceToAnonymousEnumEnumeratorTestImpl()
 {
     public static partial class Methods
     {
-        public const int MyEnum1_Value1 = 1;
+        public const uint MyEnum1_Value1 = 1;
 
         [NativeTypeName(""const int"")]
         public const int MyEnum2_Value1 = (int)(MyEnum1_Value1) + 1;

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/FunctionDeclarationBodyImportTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_FunctionDeclarationBodyImportTest : FunctionDeclarationBodyImportTest
 {
     protected override Task ArraySubscriptTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/FunctionDeclarationDllImportTest.cs

@@ -3,9 +3,11 @@
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_FunctionDeclarationDllImportTest : FunctionDeclarationDllImportTest
 {
     protected override Task BasicTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/FunctionPointerDeclarationTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_FunctionPointerDeclarationTest : FunctionPointerDeclarationTest
 {
     protected override Task BasicTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/StructDeclarationTest.cs

@@ -4,9 +4,11 @@
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_StructDeclarationTest : StructDeclarationTest
 {
     protected override Task IncompleteArraySizeTestImpl(string nativeType, string expectedManagedType)
@@ -1942,7 +1944,9 @@ public partial struct MyStruct3
 
     protected override Task WithPackingTestImpl()
     {
-        const string InputContents = @"struct MyStruct
+        const string InputContents = @"typedef int size_t;
+
+struct MyStruct
 {
     size_t FixedBuffer[1];
 };

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/UnionDeclarationTest.cs

@@ -1,12 +1,13 @@
 // 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;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_UnionDeclarationTest : UnionDeclarationTest
 {
     protected override Task BasicTestImpl(string nativeType, string expectedManagedType)

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleUnix/VarDeclarationTest.cs

@@ -2,9 +2,11 @@
 
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("unix")]
 public sealed class CSharpCompatibleUnix_VarDeclarationTest : VarDeclarationTest
 {
     protected override Task BasicTestImpl(string nativeType, string expectedManagedType)

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

@@ -3,9 +3,11 @@
 using System;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_CXXMethodDeclarationTest : CXXMethodDeclarationTest
 {
     protected override Task ConstructorTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/DeprecatedToObsoleteTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_DeprecatedToObsoleteTest : DeprecatedToObsoleteTest
 {
     protected override Task SimpleStructMembersImpl(string nativeType, string expectedManagedType)

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/EnumDeclarationTest.cs

@@ -2,9 +2,11 @@
 
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_EnumDeclarationTest : EnumDeclarationTest
 {
     protected override Task BasicTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/FunctionDeclarationBodyImportTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_FunctionDeclarationBodyImportTest : FunctionDeclarationBodyImportTest
 {
     protected override Task ArraySubscriptTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/FunctionDeclarationDllImportTest.cs

@@ -3,9 +3,11 @@
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_FunctionDeclarationDllImportTest : FunctionDeclarationDllImportTest
 {
     protected override Task BasicTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/FunctionPointerDeclarationTest.cs

@@ -1,9 +1,11 @@
 // 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;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_FunctionPointerDeclarationTest : FunctionPointerDeclarationTest
 {
     protected override Task BasicTestImpl()

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/StructDeclarationTest.cs

@@ -4,9 +4,11 @@
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_StructDeclarationTest : StructDeclarationTest
 {
     protected override Task IncompleteArraySizeTestImpl(string nativeType, string expectedManagedType)

tests/ClangSharp.PInvokeGenerator.UnitTests/CSharpCompatibleWindows/UnionDeclarationTest.cs

@@ -1,12 +1,13 @@
 // 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;
 using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using NUnit.Framework;
 
 namespace ClangSharp.UnitTests;
 
+[Platform("win")]
 public sealed class CSharpCompatibleWindows_UnionDeclarationTest : UnionDeclarationTest
 {
     protected override Task BasicTestImpl(string nativeType, string expectedManagedType)