def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(['Products', 'build.gradle', 'Sources', 'Headers'])
        project.sources.assertHasChildren(app.sources.files*.name)
        project.headers.assertHasChildren(app.headers.files*.name)

        if (OperatingSystem.current().isMacOsX()) {
            def project = rootXcodeProject.projectFile
            project.mainGroup.assertHasChildren(['Products', 'build.gradle', 'Sources', 'Tests'])
            project.sources.assertHasChildren(app.main.files*.name)
            project.tests.assertHasChildren(app.test.files*.name)

        def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(rootChildren + ['Sources', 'Headers'])
        project.sources.assertHasChildren(componentUnderTest.sources.files*.name)
        project.headers.assertHasChildren(componentUnderTest.headers.files*.name)
    }

    @Override
    protected abstract CppSourceElement getComponentUnderTest()

    protected void assertXcodeProjectSources(List<String> rootChildren) {
        def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(rootChildren + ['Sources', 'Tests'])
        project.sources.assertHasChildren(componentUnderTest.main.files*.name)
        project.tests.assertHasChildren(componentUnderTest.test.files*.name)
    }

    @Override
    protected List<ExpectedXcodeTarget> getExpectedXcodeTargets() {

    }

    @Override
    protected void assertXcodeProjectSources(List<String> rootChildren) {
        def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(rootChildren + ['Sources'])
        project.sources.assertHasChildren(componentUnderTest.files*.name)
    }

    @Override
    protected abstract SwiftSourceElement getComponentUnderTest()

        def workspace = rootXcodeWorkspace
        workspace.contentFile.assertHasProjects("${rootProjectName}.xcodeproj")

        def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(['build.gradle'])
        project.assertNoTargets()
    }

    @ToBeFixedForConfigurationCache
    def "cleanXcode remove all XCode generated project files"() {
        requireSwiftToolChain()

        given:

        workspace.contentFile.assertHasProjects("root.xcodeproj", "app/app.xcodeproj", "greeter/greeter.xcodeproj")

        def project = rootXcodeProject.projectFile
        project.mainGroup.assertHasChildren(['build.gradle'])
        project.assertNoTargets()
    }

    @ToBeFixedForConfigurationCache
    def "creates workspace with Xcode project for each project"() {
        given:
        settingsFile << """

        String getName() {
            return getProperty("name")
        }

        List<PBXObject> getChildren() {
            return getProperty("children")
        }

        def assertHasChildren(List<String> entries) {
            def children = getProperty("children")
            assert children.size() == entries.size()
            assert children*.name.containsAll(entries)
            return true