Arguments.of("Windows", Configuration.windows(), "\\"));
    }

    @Override
    @BeforeEach
    public void setUp() throws Exception {
        projectBuilder = getContainer().lookup(ProjectBuilder.class);
    }

    protected MavenProject getProject(Artifact pom, boolean allowStub) throws Exception {
        ProjectBuildingRequest configuration = new DefaultProjectBuildingRequest();

    public MavenProject buildStandaloneSuperProject(ArtifactRepository localRepository)
            throws ProjectBuildingException {
        return buildStandaloneSuperProject(localRepository, null);
    }

    @Override
    public MavenProject buildStandaloneSuperProject(ArtifactRepository localRepository, ProfileManager profileManager)
            throws ProjectBuildingException {

     * @param attribute a attribute object.
     * @throws XmlPullParserException XmlPullParserException if
     * any.
     * @throws IOException IOException if any.
     */
    private void checkUnknownAttribute(XmlPullParser parser, String attribute, String tagName, boolean strict)
            throws XmlPullParserException, IOException {

     * @return a map of Path to Document for all discovered POM files
     * @throws IOException if there's an error reading files
     * @throws DomTripException if there's an error parsing XML
     */
    public static Map<Path, Document> discoverPoms(Path startDirectory) throws IOException, DomTripException {
        Map<Path, Document> pomMap = new HashMap<>();

        // Find and load the root POM

     * @param repositories
     * @param session
     * @return PluginDescriptor The component descriptor for the Maven plugin.
     * @throws PluginNotFoundException The plugin could not be found in any repositories.
     * @throws PluginResolutionException The plugin could be found but could not be resolved.
     * @throws InvalidPluginDescriptorException
     */
    @Override
    public PluginDescriptor loadPlugin(

    @BeforeEach
    void setUp() throws Exception {
        source = new Source();

        projectArtifact = createArtifactSpec("project", "1.0", null);
    }

    @Test
    @Disabled("works, but we don't fail on cycles presently")
    void testCircularDependencyNotIncludingCurrentProject()
            throws ArtifactResolutionException, InvalidVersionSpecificationException {

    private Model read(String pom) throws Exception {
        String resource = "/poms/validation/" + pom;
        try (InputStream is = getClass().getResourceAsStream(resource)) {
            assertNotNull(is, "missing resource: " + resource);
            return new Model(new MavenStaxReader().read(is));
        }
    }

    private SimpleProblemCollector validate(String pom) throws Exception {

        return read(new XmlStreamReader(in), strict);
    }

    /**
     * Method read.
     *
     * @param in a in object.
     * @return PersistedToolchains
     * @throws IOException IOException if any.
     * @throws XmlPullParserException XmlPullParserException if
     *         any.
     */

    @Test
    void testBasedirExtractionWithMissingProject() throws Exception {
        ExpressionEvaluator ee = createExpressionEvaluator(null, null, new Properties());

        Object value = ee.evaluate("${basedir}");

        assertEquals(System.getProperty("user.dir"), value);
    }

    @Test
    void testValueExtractionFromSystemPropertiesWithMissingProject() throws Exception {
        String sysprop = "PPEET_sysprop1";

     * @param persistedToolchains a persistedToolchains object.
     * @throws IOException java.io.IOException if any.
     */
    public void write(Writer writer, PersistedToolchains persistedToolchains) throws IOException {
        try {
            delegate.write(writer, persistedToolchains.getDelegate());
        } catch (XMLStreamException e) {
            throw new IOException(e);
        }
    }

    /**
     * Method write.