import javax.annotation.Nullable;
import java.io.File;
import java.util.Set;

/**
 * <p>A {@code ProjectDescriptor} declares the configuration required to create and evaluate a {@link
 * org.gradle.api.Project}.</p>
 *
 * <p> A {@code ProjectDescriptor} is created when you add a project to the build from the settings script, using {@link

    public DefaultProjectDescriptor project(String path) {
        DefaultProjectDescriptor projectDescriptor = getProjectDescriptorRegistry().getProject(path);
        if (projectDescriptor == null) {
            throw new UnknownProjectException(String.format("Project with path '%s' could not be found.", path));
        }
        return projectDescriptor;
    }

    @Override
    public DefaultProjectDescriptor project(File projectDir) {

        def buildFile = tmpDir.createFile("build.gradle")
        def projectDir = tmpDir.createFile("project")

        given:
        projectDescriptor.name >> "name"
        projectDescriptor.projectDir >> projectDir
        projectDescriptor.buildFile >> buildFile
        gradle.projectRegistry >> projectRegistry
        gradle.services >> serviceRegistry

        given:
        def descriptor = projectDescriptor()

        when:
        descriptor.projectDir = new File("relative/path")

        then:
        descriptor.projectDir.absolutePath == new File(testDirectory, "relative/path").absolutePath
    }

    def "can set absolute project directory"() {
        given:
        def descriptor = projectDescriptor()

        when:

        TextResource resource = textFileResourceLoader.loadFile("build file", buildFile);
        ScriptSource source = new TextResourceScriptSource(resource);
        DefaultProject project = instantiator.newInstance(DefaultProject.class,
            projectDescriptor.getName(),
            parent,
            projectDescriptor.getProjectDir(),
            buildFile,

        writeLn();
    }

    protected static String rootProjectName(ProjectDescriptor descriptor) {
        ProjectDescriptor current = descriptor;
        while (current.getParent() != null) {
            current = current.getParent();
        }
        return current.getName();
    }

    protected void writeProjectAccessor(String name, ProjectDescriptor descriptor) throws IOException {
        writeLn("    /**");

        when:
        DefaultProjectDescriptor projectDescriptor = settings.createProjectDescriptor(settings.getRootProject(), testName, testDir)

        then:
        settings.rootProject.is(projectDescriptor.parent)
        settings.projectDescriptorRegistry.is(projectDescriptor.projectDescriptorRegistry)
        testName == projectDescriptor.name
        testDir.canonicalFile == projectDescriptor.projectDir
    }

        rootProject.childProjectsUnchecked['child'].is childProject
    }

    ProjectDescriptor descriptor(String name, ProjectDescriptor parent, File projectDir) {
        new DefaultProjectDescriptor(parent, name, projectDir, projectDescriptorRegistry, TestFiles.resolver(rootProjectDir))
    }

    ProjectInternal project(ProjectDescriptor descriptor, ProjectInternal parent) {
        ProjectInternal project
        if (parent) {

        delegate.rootDir

    override fun getRootProject(): ProjectDescriptor =
        delegate.rootProject

    override fun project(path: String): ProjectDescriptor =
        delegate.project(path)

    override fun findProject(path: String): ProjectDescriptor? =
        delegate.findProject(path)

    override fun project(projectDir: File): ProjectDescriptor =
        delegate.project(projectDir)

    }

    private static boolean assertCanGenerateAccessors(ProjectRegistry<? extends ProjectDescriptor> projectRegistry) {
        List<String> errors = new ArrayList<>();
        projectRegistry.getAllProjects()
            .stream()
            .map(ProjectDescriptor::getName)
            .filter(p -> !SUPPORTED_PATTERN.matcher(p).matches())