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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Linq;
using Internal.TypeSystem;
using Xunit;
namespace TypeSystemTests
{
public class GenericMethodTests
{
private TestTypeSystemContext _context;
private ModuleDesc _testModule;
public GenericMethodTests()
{
_context = new TestTypeSystemContext(TargetArchitecture.Unknown);
var systemModule = _context.CreateModuleForSimpleName("CoreTestAssembly");
_context.SetSystemModule(systemModule);
_testModule = systemModule;
}
/// <summary>
/// Testing proper instantiation of types and methods involving generic parameters in their signature.
/// </summary>
[Fact]
public void TestInstantiation()
{
MetadataType t = _testModule.GetType("GenericTypes", "GenericClass`1");
// Verify that we get just type definitions.
Assert.NotNull(t);
Assert.True(t.IsTypeDefinition);
Assert.Equal(1, t.Instantiation.Length);
Assert.True(t.Instantiation[0].IsTypeDefinition);
// Verify that we got a method definition
MethodDesc fooMethod = t.GetMethods().First(m => m.Name == "Foo");
Assert.True(fooMethod.IsTypicalMethodDefinition);
// Verify that instantiating a method definition has no effect
MethodDesc instantiatedMethod = fooMethod.InstantiateSignature(new Instantiation(_context.GetWellKnownType(WellKnownType.Int32)), Instantiation.Empty);
Assert.Same(fooMethod, instantiatedMethod);
MetadataType instantiatedType = t.MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
// Verify properties of the instantiated type
Assert.NotNull(instantiatedType);
Assert.False(instantiatedType.IsTypeDefinition);
Assert.Equal(1, instantiatedType.Instantiation.Length);
Assert.Equal(_context.GetWellKnownType(WellKnownType.Int32), instantiatedType.Instantiation[0]);
// Verify that we get an instantiated method with the proper signature
MethodDesc fooInstantiatedMethod = instantiatedType.GetMethods().First(m => m.Name == "Foo");
Assert.False(fooInstantiatedMethod.IsTypicalMethodDefinition);
Assert.Equal(_context.GetWellKnownType(WellKnownType.Int32), fooInstantiatedMethod.Signature.ReturnType);
Assert.Same(fooInstantiatedMethod.GetTypicalMethodDefinition(), fooMethod);
// This is not a generic method, so they should be the same
Assert.Same(fooInstantiatedMethod.GetMethodDefinition(), fooInstantiatedMethod);
// Verify that instantiating a type definition has no effect
TypeDesc newType = t.InstantiateSignature(new Instantiation(_context.GetWellKnownType(WellKnownType.Int32)), Instantiation.Empty);
Assert.NotNull(newType);
Assert.Same(newType, t);
}
[Fact]
public void TestMethodAttributes()
{
MetadataType tGen = _testModule.GetType("GenericTypes", "GenericClass`1");
MetadataType tDerivedGen = _testModule.GetType("GenericTypes", "DerivedGenericClass`1");
InstantiatedType genOfInt = tGen.MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
InstantiatedType derivedGenOfInt = tDerivedGen.MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
MethodDesc fooInstantiatedMethod = genOfInt.GetMethods().First(m => m.Name == "Foo");
MethodDesc barInstantiatedMethod = genOfInt.GetMethods().First(m => m.Name == "Bar");
MethodDesc fooDerivedInstantiatedMethod = derivedGenOfInt.GetMethods().First(m => m.Name == "Foo");
Assert.False(barInstantiatedMethod.IsVirtual);
Assert.False(barInstantiatedMethod.IsNewSlot);
Assert.False(barInstantiatedMethod.IsFinal);
Assert.False(barInstantiatedMethod.IsAbstract);
Assert.True(fooInstantiatedMethod.IsVirtual);
Assert.True(fooInstantiatedMethod.IsNewSlot);
Assert.False(fooInstantiatedMethod.IsFinal);
Assert.True(fooInstantiatedMethod.IsAbstract);
Assert.True(fooDerivedInstantiatedMethod.IsVirtual);
Assert.False(fooDerivedInstantiatedMethod.IsNewSlot);
Assert.True(fooDerivedInstantiatedMethod.IsFinal);
Assert.False(fooDerivedInstantiatedMethod.IsAbstract);
}
[Fact]
public void TestFinalize()
{
MetadataType tGen = _testModule.GetType("GenericTypes", "GenericClass`1");
MetadataType tDerivedGen = _testModule.GetType("GenericTypes", "DerivedGenericClass`1");
InstantiatedType genOfInt = tGen.MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
InstantiatedType derivedGenOfInt = tDerivedGen.MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
MethodDesc finalizeInstantiatedMethod = genOfInt.GetMethods().First(m => m.Name == "Finalize");
Assert.Equal(finalizeInstantiatedMethod, genOfInt.GetFinalizer());
Assert.Equal(finalizeInstantiatedMethod, derivedGenOfInt.GetFinalizer());
}
/// <summary>
/// Testing lookup up of a method in an instantiated type.
/// </summary>
[Fact]
[ActiveIssue(-1)]
public void TestMethodLookup()
{
MetadataType t = _testModule.GetType("GenericTypes", "GenericClass`1").MakeInstantiatedType(_context.GetWellKnownType(WellKnownType.Int32));
MethodSignature sig = new MethodSignature(MethodSignatureFlags.None, 0, t.Instantiation[0], new TypeDesc[0] { });
MethodDesc fooMethod = t.GetMethod("Foo", sig);
Assert.NotNull(fooMethod);
}
[Fact]
public void TestConstructedTypeAdjustment()
{
TypeDesc intType = _context.GetWellKnownType(WellKnownType.Int32);
TypeDesc stringType = _context.GetWellKnownType(WellKnownType.String);
TypeDesc charType = _context.GetWellKnownType(WellKnownType.Char);
TypeDesc objectType = _context.GetWellKnownType(WellKnownType.Object);
MetadataType genericOpenType = _testModule.GetType("GenericTypes", "TwoParamGenericClass`2");
InstantiatedType genericOfCharObject = genericOpenType.MakeInstantiatedType(charType, objectType);
InstantiatedType genericOfCharString = genericOpenType.MakeInstantiatedType(charType, stringType);
InstantiatedType genericOfIntString = genericOpenType.MakeInstantiatedType(intType, stringType);
InstantiatedType genericOfIntObject = genericOpenType.MakeInstantiatedType(intType, objectType);
Assert.True(genericOfCharObject.IsConstructedOverType(new TypeDesc[] { charType }));
Assert.True(genericOfCharObject.IsConstructedOverType(new TypeDesc[] { objectType }));
Assert.False(genericOfCharObject.IsConstructedOverType(new TypeDesc[] { intType }));
Assert.False(genericOfCharObject.IsConstructedOverType(new TypeDesc[] { stringType }));
Assert.False(genericOfCharObject.IsConstructedOverType(new TypeDesc[] { genericOpenType }));
Assert.True(genericOfCharString.IsConstructedOverType(new TypeDesc[] { charType }));
Assert.False(genericOfCharString.IsConstructedOverType(new TypeDesc[] { objectType }));
Assert.False(genericOfCharString.IsConstructedOverType(new TypeDesc[] { intType }));
Assert.True(genericOfCharString.IsConstructedOverType(new TypeDesc[] { stringType }));
// Test direct replacement
TypeDesc testDirectReplaceAllTypes = genericOfCharObject.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType, objectType }, new TypeDesc[] { intType, stringType });
Assert.Equal(genericOfIntString, testDirectReplaceAllTypes);
// Test direct replacement where not all types are replaced
TypeDesc testDirectReplaceFirstType = genericOfCharObject.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType }, new TypeDesc[] { intType });
Assert.Equal(genericOfIntObject, testDirectReplaceFirstType);
TypeDesc testDirectReplaceSecondType = genericOfCharObject.ReplaceTypesInConstructionOfType(new TypeDesc[] { objectType }, new TypeDesc[] { stringType });
Assert.Equal(genericOfCharString, testDirectReplaceSecondType);
// Test Arrays
TypeDesc arrayChar = _context.GetArrayType(charType);
Assert.False(arrayChar.IsMdArray);
Assert.True(arrayChar.IsSzArray);
Assert.True(arrayChar.IsArray);
TypeDesc arrayInt = _context.GetArrayType(intType);
Assert.False(arrayInt.IsMdArray);
Assert.True(arrayInt.IsSzArray);
Assert.True(arrayInt.IsArray);
InstantiatedType genericOfCharArrayObject = genericOpenType.MakeInstantiatedType(arrayChar, objectType);
InstantiatedType genericOfIntArrayObject = genericOpenType.MakeInstantiatedType(arrayInt, objectType);
TypeDesc testReplaceTypeInArrayInGeneric = genericOfCharArrayObject.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType }, new TypeDesc[] { intType });
Assert.Equal(genericOfIntArrayObject, testReplaceTypeInArrayInGeneric);
// Test multidimensional arrays
TypeDesc mdArrayChar = _context.GetArrayType(charType, 3);
Assert.True(mdArrayChar.IsMdArray);
Assert.False(mdArrayChar.IsSzArray);
Assert.True(mdArrayChar.IsArray);
TypeDesc mdArrayInt = _context.GetArrayType(intType, 3);
Assert.True(mdArrayInt.IsMdArray);
Assert.False(mdArrayInt.IsSzArray);
Assert.True(mdArrayInt.IsArray);
InstantiatedType genericOfCharMdArrayObject = genericOpenType.MakeInstantiatedType(mdArrayChar, objectType);
InstantiatedType genericOfIntMdArrayObject = genericOpenType.MakeInstantiatedType(mdArrayInt, objectType);
TypeDesc testReplaceTypeInMdArrayInGeneric = genericOfCharMdArrayObject.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType }, new TypeDesc[] { intType });
Assert.Equal(genericOfIntMdArrayObject, testReplaceTypeInMdArrayInGeneric);
// Test pointers
TypeDesc charPointer = _context.GetPointerType(charType);
TypeDesc intPointer = _context.GetPointerType(intType);
TypeDesc testReplaceTypeInPointer = charPointer.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType }, new TypeDesc[] { intType });
Assert.Equal(intPointer, testReplaceTypeInPointer);
Assert.True(charPointer.IsConstructedOverType(new TypeDesc[] { charType }));
Assert.False(charPointer.IsConstructedOverType(new TypeDesc[] { intType }));
// Test byref
TypeDesc charByRef = _context.GetByRefType(charType);
TypeDesc intByRef = _context.GetByRefType(intType);
TypeDesc testReplaceTypeInByRef = charByRef.ReplaceTypesInConstructionOfType(new TypeDesc[] { charType }, new TypeDesc[] { intType });
Assert.Equal(intByRef, testReplaceTypeInByRef);
Assert.True(charByRef.IsConstructedOverType(new TypeDesc[] { charType }));
Assert.False(charByRef.IsConstructedOverType(new TypeDesc[] { intType }));
// Test replace type entirely
TypeDesc testReplaceTypeEntirely = charByRef.ReplaceTypesInConstructionOfType(new TypeDesc[] { charByRef }, new TypeDesc[] { intByRef });
Assert.Equal(intByRef, testReplaceTypeEntirely);
Assert.True(charByRef.IsConstructedOverType(new TypeDesc[] { charByRef }));
}
[Fact]
public void TestConstructedMethodAdjustment()
{
TypeDesc intType = _context.GetWellKnownType(WellKnownType.Int32);
TypeDesc stringType = _context.GetWellKnownType(WellKnownType.String);
TypeDesc charType = _context.GetWellKnownType(WellKnownType.Char);
TypeDesc objectType = _context.GetWellKnownType(WellKnownType.Object);
MetadataType genericOpenType = _testModule.GetType("GenericTypes", "TwoParamGenericClass`2");
MetadataType nonGenericType = _testModule.GetType("GenericTypes", "NonGenericClass");
MethodDesc nonGenericOnGeneric = genericOpenType.GetMethod("NonGenericFunction", null);
MethodDesc genericOnGeneric = genericOpenType.GetMethod("GenericFunction", null);
MethodDesc genericOnNonGeneric = nonGenericType.GetMethod("GenericFunction", null);
InstantiatedType genericIntString = genericOpenType.MakeInstantiatedType(intType, stringType);
InstantiatedType genericCharString = genericOpenType.MakeInstantiatedType(charType, stringType);
InstantiatedType genericCharObject = genericOpenType.MakeInstantiatedType(charType, objectType);
MethodDesc nonGenericOnGenericIntString = genericIntString.GetMethod("NonGenericFunction", null);
MethodDesc nonGenericOnGenericCharString = genericCharString.GetMethod("NonGenericFunction", null);
MethodDesc nonGenericOnGenericCharObject = genericCharObject.GetMethod("NonGenericFunction", null);
MethodDesc genericIntStringOnGenericIntString = genericIntString.GetMethod("GenericFunction", null).MakeInstantiatedMethod(intType, stringType);
MethodDesc genericCharStringOnGenericCharString = genericCharString.GetMethod("GenericFunction", null).MakeInstantiatedMethod(charType, stringType);
MethodDesc genericCharObjectOnGenericCharObject = genericCharObject.GetMethod("GenericFunction", null).MakeInstantiatedMethod(charType, objectType);
MethodDesc genericIntStringOnNonGeneric = genericOnNonGeneric.MakeInstantiatedMethod(intType, stringType);
MethodDesc genericCharStringOnNonGeneric = genericOnNonGeneric.MakeInstantiatedMethod(charType, stringType);
MethodDesc genericCharObjectOnNonGeneric = genericOnNonGeneric.MakeInstantiatedMethod(charType, objectType);
// Test complete replacement
MethodDesc testDirectReplacementNonGenericOnGeneric = nonGenericOnGenericIntString.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType, stringType }, new TypeDesc[] { charType, objectType });
Assert.Equal(nonGenericOnGenericCharObject, testDirectReplacementNonGenericOnGeneric);
MethodDesc testDirectReplacementGenericOnGeneric = genericIntStringOnGenericIntString.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType, stringType }, new TypeDesc[] { charType, objectType });
Assert.Equal(genericCharObjectOnGenericCharObject, testDirectReplacementGenericOnGeneric);
MethodDesc testDirectReplacementGenericOnNonGeneric = genericIntStringOnNonGeneric.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType, stringType }, new TypeDesc[] { charType, objectType });
Assert.Equal(genericCharObjectOnNonGeneric, testDirectReplacementGenericOnNonGeneric);
// Test replace first type in instantiation
MethodDesc testPartialReplacementNonGenericOnGeneric = nonGenericOnGenericIntString.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType }, new TypeDesc[] { charType });
Assert.Equal(nonGenericOnGenericCharString, testPartialReplacementNonGenericOnGeneric);
MethodDesc testPartialReplacementGenericOnGeneric = genericIntStringOnGenericIntString.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType }, new TypeDesc[] { charType });
Assert.Equal(genericCharStringOnGenericCharString, testPartialReplacementGenericOnGeneric);
MethodDesc testPartialReplacementGenericOnNonGeneric = genericIntStringOnNonGeneric.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType }, new TypeDesc[] { charType });
Assert.Equal(genericCharStringOnNonGeneric, testPartialReplacementGenericOnNonGeneric);
// Test ArrayMethod case
ArrayType mdArrayChar = _context.GetArrayType(charType, 3);
ArrayType mdArrayInt = _context.GetArrayType(intType, 3);
MethodDesc getMethodOnMDIntArray = mdArrayInt.GetArrayMethod(ArrayMethodKind.Get);
MethodDesc getMethodOnMDCharArray = mdArrayChar.GetArrayMethod(ArrayMethodKind.Get);
MethodDesc testArrayMethodCase = getMethodOnMDIntArray.ReplaceTypesInConstructionOfMethod(new TypeDesc[] { intType }, new TypeDesc[] { charType });
Assert.Equal(getMethodOnMDCharArray, testArrayMethodCase);
}
}
}
|
