project.mainComponent.binaries.size() == 2

        def debugBinary = project.mainComponent.binaries[0]
        debugBinary instanceof CppExecutable
        debugBinary.name == 'mainDebug'
        debugBinary.variantName == 'debug'
        debugBinary.baseName == 'app'
        debugBinary.compilationDetails.sources.sourceFile as Set == [src1, src2] as Set
        debugBinary.compilationDetails.sources.objectFile.each { assert it != null }

        def debugX86Binary = project.mainComponent.binaries[0]
        debugX86Binary instanceof CppExecutable
        debugX86Binary.name == 'mainDebugX86'
        debugX86Binary.variantName == 'debugX86'
        debugX86Binary.baseName == 'app'
        debugX86Binary.compilationDetails.sources.sourceFile as Set == [src1, src2] as Set

        return variantMetadataRules;
    }

    @Override
    public MutableComponentVariant addVariant(String variantName, ImmutableAttributes attributes) {
        return addVariant(new MutableVariantImpl(variantName, attributes));
    }

    @Override
    public MutableComponentVariant addVariant(MutableComponentVariant variant) {
        if (newVariants == null) {

        final Set<File> files = new LinkedHashSet<>();
        List<Throwable> failures;

        @Override
        public void visitArtifact(DisplayName variantName, AttributeContainer variantAttributes, ImmutableCapabilities capabilities, ResolvableArtifact artifact) {
            try {
                ResolvedArtifact resolvedArtifact = artifact.toPublicView();

        "ResolvedVariantResult"        | "new DefaultResolvedVariantResult(new DefaultModuleComponentIdentifier(DefaultModuleIdentifier.newId('group', System.getProperty('n')), '1.0'), Describables.of('variantName'), services.get(ImmutableAttributesFactory).of(Attribute.of('some', String.class), System.getProperty('n')), ImmutableCapabilities.of(new DefaultImmutableCapability('group', System.getProperty('n'), '1.0')), null)"