private static void ValidateTypeInstanceEquality()
{
Console.WriteLine($"{nameof(ValidateTypeInstanceEquality)}");
var inAsm = EmptyType.Create();
var otherAsm = EmptyType2.Create();
Type inAsmInterfaceType = inAsm.GetType().GetInterface(nameof(IEmptyType));
Type otherAsmInterfaceType = otherAsm.GetType().GetInterface(nameof(IEmptyType));
// Sanity checks
Assert.True(inAsmInterfaceType == inAsmInterfaceType);
Assert.True(inAsmInterfaceType.IsEquivalentTo(inAsmInterfaceType));
Assert.False(inAsmInterfaceType.IsEquivalentTo(inAsm.GetType()));
Assert.True(otherAsmInterfaceType == otherAsmInterfaceType);
Assert.True(otherAsmInterfaceType.IsEquivalentTo(otherAsmInterfaceType));
Assert.False(otherAsmInterfaceType.IsEquivalentTo(otherAsm.GetType()));
// The intrinsic equality operations should fail
Assert.False(inAsmInterfaceType == otherAsmInterfaceType);
Assert.False(inAsmInterfaceType.Equals(otherAsmInterfaceType));
Assert.False(otherAsmInterfaceType == inAsmInterfaceType);
Assert.False(otherAsmInterfaceType.Equals(inAsmInterfaceType));
// Determination of equal types requires API call
Assert.True(inAsmInterfaceType.IsEquivalentTo(otherAsmInterfaceType));
Assert.True(otherAsmInterfaceType.IsEquivalentTo(inAsmInterfaceType));
}
private static void TestGenericInterfaceEquivalence()
{
Console.WriteLine($"{nameof(TestGenericInterfaceEquivalence)}");
var inAsm = EmptyType.Create();
var otherAsm = EmptyType2.Create();
Type inAsmInterfaceType = inAsm.GetType().GetInterface(nameof(IEmptyType));
Type otherAsmInterfaceType = otherAsm.GetType().GetInterface(nameof(IEmptyType));
Assert.True(typeof(IGeneric <>).MakeGenericType(inAsmInterfaceType).IsEquivalentTo(typeof(IGeneric <>).MakeGenericType(otherAsmInterfaceType)));
}
private static void TestByRefEquivalence()
{
Console.WriteLine($"{nameof(TestByRefEquivalence)}");
var inAsm = EmptyType.Create();
var otherAsm = EmptyType2.Create();
Type inAsmInterfaceType = inAsm.GetType().GetInterface(nameof(IEmptyType));
Type otherAsmInterfaceType = otherAsm.GetType().GetInterface(nameof(IEmptyType));
Assert.IsTrue(inAsmInterfaceType.MakeByRefType().IsEquivalentTo(otherAsmInterfaceType.MakeByRefType()));
}
private static void InterfaceTypesFromDifferentAssembliesAreEquivalent()
{
Console.WriteLine($"{nameof(InterfaceTypesFromDifferentAssembliesAreEquivalent)}");
var inAsm = EmptyType.Create();
var otherAsm = EmptyType2.Create();
AreNotSameObject((IEmptyType)inAsm, (IEmptyType)otherAsm);
void AreNotSameObject(IEmptyType a, IEmptyType b)
{
Assert.NotEqual(a, b);
}
}
