public bool Equals(MissingAssemblySymbol other)
        {
            if ((object)other == null)
            {
                return(false);
            }

            if (ReferenceEquals(this, other))
            {
                return(true);
            }

            return(identity.Equals(other.Identity));
        }
        public bool Equals(MissingAssemblySymbol other)
        {
            if ((object)other == null)
            {
                return false;
            }

            if (ReferenceEquals(this, other))
            {
                return true;
            }

            return identity.Equals(other.Identity);
        }
        public void Equality()
        {
            var assemblies = MetadataTestHelpers.GetSymbolsForReferences(new[]
            {
                TestReferences.SymbolsTests.MissingTypes.MissingTypesEquality1,
                TestReferences.SymbolsTests.MissingTypes.MissingTypesEquality2,
                TestReferences.SymbolsTests.MDTestLib1,
                TestReferences.SymbolsTests.MDTestLib2
            });


            var asm1 = assemblies[0];

            var asm1classC = asm1.GlobalNamespace.GetTypeMembers("C").Single();

            var asm1m1 = asm1classC.GetMembers("M1").OfType<MethodSymbol>().Single();
            var asm1m2 = asm1classC.GetMembers("M2").OfType<MethodSymbol>().Single();
            var asm1m3 = asm1classC.GetMembers("M3").OfType<MethodSymbol>().Single();
            var asm1m4 = asm1classC.GetMembers("M4").OfType<MethodSymbol>().Single();
            var asm1m5 = asm1classC.GetMembers("M5").OfType<MethodSymbol>().Single();
            var asm1m6 = asm1classC.GetMembers("M6").OfType<MethodSymbol>().Single();
            var asm1m7 = asm1classC.GetMembers("M7").OfType<MethodSymbol>().Single();
            var asm1m8 = asm1classC.GetMembers("M8").OfType<MethodSymbol>().Single();

            Assert.NotEqual(asm1m2.ReturnType, asm1m1.ReturnType);
            Assert.NotEqual(asm1m3.ReturnType, asm1m1.ReturnType);
            Assert.NotEqual(asm1m4.ReturnType, asm1m1.ReturnType);

            Assert.NotEqual(asm1m5.ReturnType, asm1m4.ReturnType);
            Assert.NotEqual(asm1m6.ReturnType, asm1m4.ReturnType);

            Assert.Equal(asm1m7.ReturnType, asm1m1.ReturnType);
            Assert.Equal(asm1m8.ReturnType, asm1m4.ReturnType);

            var asm2 = assemblies[1];

            var asm2classC = asm2.GlobalNamespace.GetTypeMembers("C").Single();

            var asm2m1 = asm2classC.GetMembers("M1").OfType<MethodSymbol>().Single();
            var asm2m4 = asm2classC.GetMembers("M4").OfType<MethodSymbol>().Single();

            Assert.Equal(asm2m1.ReturnType, asm1m1.ReturnType);

            Assert.NotSame(asm1m4.ReturnType, asm2m4.ReturnType);
            Assert.Equal(asm2m4.ReturnType, asm1m4.ReturnType);

            Assert.Equal(asm1.GetSpecialType(SpecialType.System_Boolean), asm1.GetSpecialType(SpecialType.System_Boolean));
            Assert.Equal(asm1.GetSpecialType(SpecialType.System_Boolean), asm2.GetSpecialType(SpecialType.System_Boolean));

            MissingMetadataTypeSymbol [] missingTypes1 = new MissingMetadataTypeSymbol[15];
            MissingMetadataTypeSymbol [] missingTypes2 = new MissingMetadataTypeSymbol[15];

            var defaultName = new AssemblyIdentity("missing");

            missingTypes1[0] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test1", 0, true);
            missingTypes1[1] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test1", 1, true);
            missingTypes1[2] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test2", 0, true);
            missingTypes1[3] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test1", 0, true);
            missingTypes1[4] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test1", 1, true);
            missingTypes1[5] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test2", 0, true);
            missingTypes1[6] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm2")).Modules[0], "", "test1", 0, true);
            missingTypes1[7] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test1", 0, true);
            missingTypes1[8] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test1", 1, true);
            missingTypes1[9] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test2", 0, true);
            missingTypes1[10] = new MissingMetadataTypeSymbol.TopLevel(asm2.Modules[0], "", "test1", 0, true);
            missingTypes1[11] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test1", 0, true);
            missingTypes1[12] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test1", 1, true);
            missingTypes1[13] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test2", 0, true);
            missingTypes1[14] = new MissingMetadataTypeSymbol.Nested(asm2classC, "test1", 0, true);

            missingTypes2[0] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test1", 0, true);
            missingTypes2[1] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test1", 1, true);
            missingTypes2[2] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(defaultName).Modules[0], "", "test2", 0, true);
            missingTypes2[3] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test1", 0, true);
            missingTypes2[4] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test1", 1, true);
            missingTypes2[5] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm1")).Modules[0], "", "test2", 0, true);
            missingTypes2[6] = new MissingMetadataTypeSymbol.TopLevel(new MissingAssemblySymbol(new AssemblyIdentity("asm2")).Modules[0], "", "test1", 0, true);
            missingTypes2[7] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test1", 0, true);
            missingTypes2[8] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test1", 1, true);
            missingTypes2[9] = new MissingMetadataTypeSymbol.TopLevel(asm1.Modules[0], "", "test2", 0, true);
            missingTypes2[10] = new MissingMetadataTypeSymbol.TopLevel(asm2.Modules[0], "", "test1", 0, true);
            missingTypes2[11] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test1", 0, true);
            missingTypes2[12] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test1", 1, true);
            missingTypes2[13] = new MissingMetadataTypeSymbol.Nested(asm1classC, "test2", 0, true);
            missingTypes2[14] = new MissingMetadataTypeSymbol.Nested(asm2classC, "test1", 0, true);

            for (int i = 0; i < missingTypes1.Length; i++)
            {
                for (int j = 0; j < missingTypes2.Length; j++)
                {
                    if (i == j)
                    {
                        Assert.Equal(missingTypes2[j], missingTypes1[i]);
                        Assert.Equal(missingTypes1[i], missingTypes2[j]);
                    }
                    else
                    {
                        Assert.NotEqual(missingTypes2[j], missingTypes1[i]);
                        Assert.NotEqual(missingTypes1[i], missingTypes2[j]);
                    }
                }
            }

            var missingAssembly = new MissingAssemblySymbol(new AssemblyIdentity("asm1"));
            Assert.True(missingAssembly.Equals(missingAssembly));
            Assert.NotEqual(new object (), missingAssembly);
            Assert.False(missingAssembly.Equals(null));
        }