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Add tests for GetInterfaceMap on static interface methods #90518

Merged
merged 11 commits into from
Aug 25, 2023
299 changes: 299 additions & 0 deletions src/libraries/System.Runtime/tests/System/Type/TypeTests.cs
Original file line number Diff line number Diff line change
Expand Up @@ -1053,6 +1053,24 @@ public static IEnumerable<object[]> GetInterfaceMap_TestData()
}
};
yield return new object[]
{
typeof(DIMs.I2),
typeof(DIMs.C3),
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(typeof(DIMs.I2).GetMethod("System.Tests.TypeTestsExtended.DIMs.I1.M", BindingFlags.Instance | BindingFlags.NonPublic), null)
}
};
yield return new object[]
{
typeof(DIMs.I1),
typeof(DIMs.C3),
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(typeof(DIMs.I1).GetMethod("M"), typeof(DIMs.I3).GetMethod("System.Tests.TypeTestsExtended.DIMs.I1.M", BindingFlags.Instance | BindingFlags.NonPublic))
}
};
yield return new object[]
{
typeof(DIMs.I4),
typeof(DIMs.C4),
Expand All @@ -1062,6 +1080,15 @@ public static IEnumerable<object[]> GetInterfaceMap_TestData()
}
};
yield return new object[]
{
typeof(DIMs.I3),
typeof(DIMs.C4),
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(typeof(DIMs.I3).GetMethod("System.Tests.TypeTestsExtended.DIMs.I1.M", BindingFlags.Instance | BindingFlags.NonPublic), typeof(DIMs.I3).GetMethod("System.Tests.TypeTestsExtended.DIMs.I1.M", BindingFlags.Instance | BindingFlags.NonPublic))
}
};
yield return new object[]
{
typeof(DIMs.I2),
typeof(DIMs.C4),
Expand All @@ -1070,6 +1097,148 @@ public static IEnumerable<object[]> GetInterfaceMap_TestData()
new Tuple<MethodInfo, MethodInfo>(typeof(DIMs.I2).GetMethod("System.Tests.TypeTestsExtended.DIMs.I1.M", BindingFlags.Instance | BindingFlags.NonPublic), null)
}
};
yield return new object[]
{
typeof(DIMs.I1),
typeof(DIMs.C4),
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(typeof(DIMs.I1).GetMethod("M"), typeof(DIMs.C4).GetMethod("M"))
}
};

// Test all combinations of the following:
// Static method
// Implementation by having the same name, explicit implementation, & default implementation (where applicable - only level 2)
// Non-generic interface, generic interface
// Non-generic type, generic type
// 3 levels of inheritance (of the interfaces): 1 - static abstract method, 2 - add a default implementation, 3 - re-abstractify it
// Checks that all the applicable interfaces are working properly
(Type Type, bool IncludePrefix, bool AnyTarget, Type InterfaceGenericParameter, int Index)[] classTypes = new (Type, bool, bool, Type, int)[]
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{
// List of every type we are going to test
// (Type, whether it's implemented explicitly, whether it's not implemented in the level 2 interface, the generic parameter for Ix<T>, the level)
(typeof(SIMs.C1), false, true, typeof(int), 1),
(typeof(SIMs.C1Explicit), true, true, typeof(int), 1),
(typeof(SIMs.C1<string>), false, true, typeof(string), 1),
(typeof(SIMs.C1Explicit<string>), true, true, typeof(string), 1),
(typeof(SIMs.C1<>), false, true, typeof(SIMs.C1<>).GetGenericArguments()[0], 1),
(typeof(SIMs.C1Explicit<>), true, true, typeof(SIMs.C1Explicit<>).GetGenericArguments()[0], 1),
(typeof(SIMs.C2Implicit), false, false, typeof(int), 2),
(typeof(SIMs.C2), false, true, typeof(int), 2),
(typeof(SIMs.C2Explicit), true, true, typeof(int), 2),
(typeof(SIMs.C2Implicit<string>), false, false, typeof(string), 2),
(typeof(SIMs.C2<string>), false, true, typeof(string), 2),
(typeof(SIMs.C2Explicit<string>), true, true, typeof(string), 2),
(typeof(SIMs.C2Implicit<>), false, false, typeof(SIMs.C2Implicit<>).GetGenericArguments()[0], 2),
(typeof(SIMs.C2<>), false, true, typeof(SIMs.C2<>).GetGenericArguments()[0], 2),
(typeof(SIMs.C2Explicit<>), true, true, typeof(SIMs.C2Explicit<>).GetGenericArguments()[0], 2),
(typeof(SIMs.C3), false, true, typeof(int), 3),
(typeof(SIMs.C3Explicit), true, true, typeof(int), 3),
(typeof(SIMs.C3<string>), false, true, typeof(string), 3),
(typeof(SIMs.C3Explicit<string>), true, true, typeof(string), 3),
(typeof(SIMs.C3<>), false, true, typeof(SIMs.C3<>).GetGenericArguments()[0], 3),
(typeof(SIMs.C3Explicit<>), true, true, typeof(SIMs.C3Explicit<>).GetGenericArguments()[0], 3),
};
foreach ((Type Type, bool IncludePrefix, bool AnyTarget, Type InterfaceGenericParameter, int Index) classType in classTypes)
{
BindingFlags bindingFlags = BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic;

// This is the member name of the explicit interface implementation method in the class for the generic interface
string level1MethodNamePrefixTyped = "System.Tests.TypeTestsExtended.SIMs.I1<" + (classType.Type.GetGenericArguments().Length == 0 ? "System.Int32" : "S") + ">.";

// Check we have the expected implementation for the level 1 interfaces (abstract definitions - M and G methods)
Type level1GenericInterface = typeof(SIMs.I1<>).MakeGenericType(classType.InterfaceGenericParameter);
Type level2GenericInterface = typeof(SIMs.I2<>).MakeGenericType(classType.InterfaceGenericParameter);
Type level3GenericInterface = typeof(SIMs.I3<>).MakeGenericType(classType.InterfaceGenericParameter);
foreach ((Type Type, Type Level2InterfaceType, string MethodNamePrefix, string MethodNamePrefixTyped) interfaceType in new (Type, Type, string, string)[]
{
(typeof(SIMs.I1), typeof(SIMs.I2), "System.Tests.TypeTestsExtended.SIMs.I1.", "System.Tests.TypeTestsExtended.SIMs.I1."),
(level1GenericInterface, level2GenericInterface, "System.Tests.TypeTestsExtended.SIMs.I1<S>.", level1MethodNamePrefixTyped),
})
{
// Look up the interface method which should be implemented
MethodInfo MInterface = interfaceType.Type.GetMethod("M", bindingFlags);
MethodInfo GInterface = interfaceType.Type.GetMethod("G", bindingFlags);

// Look up the implementation
MethodInfo MTarget, GTarget;
if (classType.AnyTarget)
{
// The class implements it, either implicitly or explicitly (if IncludePrefix is specified)
MTarget = classType.Type.GetMethod((classType.IncludePrefix ? interfaceType.MethodNamePrefixTyped : "") + "M", bindingFlags);
GTarget = classType.Type.GetMethod((classType.IncludePrefix ? interfaceType.MethodNamePrefixTyped : "") + "G", bindingFlags);
}
else
{
// [ActiveIssue("https://github.com/dotnet/runtime/issues/90863")]
if (classType.Type == typeof(SIMs.C2Implicit<string>) && interfaceType.Type == typeof(SIMs.I1<string>)) continue;

// It's implemented implicitly by the level 2 interface
MTarget = interfaceType.Level2InterfaceType.GetMethod(interfaceType.MethodNamePrefix + "M", bindingFlags);
GTarget = interfaceType.Level2InterfaceType.GetMethod(interfaceType.MethodNamePrefix + "G", bindingFlags);
}

// Return our test case
yield return new object[]
{
interfaceType.Type,
classType.Type,
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(MInterface, MTarget),
new Tuple<MethodInfo, MethodInfo>(GInterface, GTarget)
}
};
}

// Check we have the expected implementation for the level 2 interfaces (virtual explicit default implementations - none)
if (classType.Index >= 2)
{
// There should be no methods for these interfaces
// Return our test cases
yield return new object[]
{
typeof(SIMs.I2),
classType.Type,
new Tuple<MethodInfo, MethodInfo>[0]
};
yield return new object[]
{
level2GenericInterface,
classType.Type,
new Tuple<MethodInfo, MethodInfo>[0]
};
}

// Check we have the expected implementation for the level 3 interfaces (abstract explicit implementations - I1.M and I1.G methods)
bool isMono = typeof(object).Assembly.GetType("Mono.RuntimeStructs") != null; // [ActiveIssue("https://github.com/dotnet/runtime/issues/TODO")]
if (!isMono && classType.Index >= 3)
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{
foreach ((Type Type, string MethodNamePrefix) interfaceType in new (Type, string)[]
{
(typeof(SIMs.I3), "System.Tests.TypeTestsExtended.SIMs.I1."),
(level3GenericInterface, "System.Tests.TypeTestsExtended.SIMs.I1<S>."),
})
{
// There should be no implementation for these methods - null
MethodInfo MInterface = interfaceType.Type.GetMethod(interfaceType.MethodNamePrefix + "M", bindingFlags);
MethodInfo GInterface = interfaceType.Type.GetMethod(interfaceType.MethodNamePrefix + "G", bindingFlags);

// Return our test cases
yield return new object[]
{
interfaceType.Type,
classType.Type,
new Tuple<MethodInfo, MethodInfo>[]
{
new Tuple<MethodInfo, MethodInfo>(MInterface, null),
new Tuple<MethodInfo, MethodInfo>(GInterface, null)
}
};
}
}
}
}

[ActiveIssue("https://github.com/dotnet/runtime/issues/89157", typeof(PlatformDetection), nameof(PlatformDetection.IsNativeAot))]
Expand Down Expand Up @@ -1167,6 +1336,136 @@ internal abstract class C4 : I4
public abstract void M();
}
}

static class SIMs
{
internal interface I1
{
static abstract void M();
static abstract void G<T>();
}
internal interface I1<S>
{
static abstract void M();
static abstract void G<T>();
}

internal class C1 : I1, I1<int>
{
public static void M() { }
public static void G<T>() { }
}

internal class C1Explicit : I1, I1<int>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<int>.M() { }
static void I1<int>.G<T>() { }
}

internal class C1<S> : I1, I1<S>
{
public static void M() { }
public static void G<T>() { }
}

internal class C1Explicit<S> : I1, I1<S>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<S>.M() { }
static void I1<S>.G<T>() { }
}


internal interface I2 : I1
{
// add a default implementation
static void I1.M() { }
static void I1.G<T>() { }
}
internal interface I2<S> : I1<S>
{
// add a default implementation
static void I1<S>.M() { }
static void I1<S>.G<T>() { }
}

internal class C2Implicit : I2, I2<int> { }

internal class C2 : I2, I2<int>
{
public static void M() { }
public static void G<T>() { }
}

internal class C2Explicit : I2, I2<int>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<int>.M() { }
static void I1<int>.G<T>() { }
}

internal class C2Implicit<S> : I2, I2<S> { }

internal class C2<S> : I2, I2<S>
{
public static void M() { }
public static void G<T>() { }
}

internal class C2Explicit<S> : I2, I2<S>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<S>.M() { }
static void I1<S>.G<T>() { }
}


internal interface I3 : I2
{
// reabstract it
static abstract void I1.M();
static abstract void I1.G<T>();
}
internal interface I3<S> : I2<S>
{
// reabstract it
static abstract void I1<S>.M();
static abstract void I1<S>.G<T>();
}

internal class C3 : I3, I3<int>
{
public static void M() { }
public static void G<T>() { }
}

internal class C3Explicit : I3, I3<int>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<int>.M() { }
static void I1<int>.G<T>() { }
}

internal class C3<S> : I3, I3<S>
{
public static void M() { }
public static void G<T>() { }
}

internal class C3Explicit<S> : I3, I3<S>
{
static void I1.M() { }
static void I1.G<T>() { }
static void I1<S>.M() { }
static void I1<S>.G<T>() { }
}
}
#endregion

[Fact]
Expand Down