void testHandleExceptionAetherClassNotFound() {
        Throwable cause2 = new NoClassDefFoundError("org/sonatype/aether/RepositorySystem");
        Plugin plugin = new Plugin();
        Exception cause = new PluginContainerException(plugin, null, null, cause2);
        PluginDescriptor pluginDescriptor = new PluginDescriptor();
        MojoDescriptor mojoDescriptor = new MojoDescriptor();
        mojoDescriptor.setPluginDescriptor(pluginDescriptor);

    private ModelResolver newModelResolver() throws Exception {
        final File localRepo = new File(this.getLocalRepository().getBasedir());
        final DefaultRepositorySystemSession repoSession = new DefaultRepositorySystemSession(h -> false);
        repoSession.setLocalRepositoryManager(new LegacyLocalRepositoryManager(localRepo));

        return new ProjectModelResolver(
                repoSession,
                null,

        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        Map<String, List<ToolchainModel>> toolchainModels = new HashMap<>();
        toolchainModels.put("basic", Arrays.asList(new ToolchainModel(), new ToolchainModel()));
        toolchainModels.put("rare", Collections.singletonList(new ToolchainModel()));
        executionRequest.setToolchains(toolchainModels);

        return Arrays.asList(
                // Maven types
                new DefaultType(Type.POM, Language.NONE, "pom", null, false),
                new DefaultType(Type.BOM, Language.NONE, "pom", null, false),
                new DefaultType(Type.MAVEN_PLUGIN, Language.JAVA_FAMILY, "jar", null, false, JavaPathType.CLASSES),
                // Java types
                new DefaultType(

        try (InputStream expected = Files.newInputStream(beforePomFile)) {
            Model model = new Model(new MavenStaxReader().read(expected));
            MavenProject project = new MavenProject(model);
            project.setOriginalModel(model);
            DefaultConsumerPomArtifactTransformer t = new DefaultConsumerPomArtifactTransformer((s, p, f) -> {
                try (InputStream is = Files.newInputStream(f)) {

        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

        interpolator.addValueSource(new MapBasedValueSource(request.getSession().getUserProperties()));

        interpolator.addValueSource(new MapBasedValueSource(request.getSession().getSystemProperties()));

        try {
            interpolator.addValueSource(new EnvarBasedValueSource());
        } catch (IOException e) {

    @BeforeEach
    void setUp() throws Exception {
        configurator = new DefaultBeanConfigurator();
    }

    @AfterEach
    void tearDown() throws Exception {
        configurator = null;
    }

    private Xpp3Dom toConfig(String xml) {
        try {
            return new Xpp3Dom(XmlNodeStaxBuilder.build(
                    new StringReader("<configuration>" + xml + "</configuration>"),

    @Override
    public Version parseVersion(String version) {
        requireNonNull(version, "version");
        return new DefaultVersion(versionScheme, version);
    }

    @Override
    public VersionRange parseVersionRange(String range) {
        requireNonNull(range, "range");
        return new DefaultVersionRange(versionScheme, range);
    }

    @Override
    public boolean isSnapshot(String version) {

        MavenExecutionRequest req = new DefaultMavenExecutionRequest();
        when(session.getRequest()).thenReturn(req);
        Map<String, List<ToolchainModel>> groupedToolchains = new HashMap<>();
        req.setToolchains(groupedToolchains);

        List<ToolchainModel> basicToolchains = new ArrayList<>();
        ToolchainModel basicToolchainModel = new ToolchainModel();
        basicToolchainModel.setType("basic");

        // v1-->v2
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.2", true, null, null, 2, 2));

        // v1-->v3
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.2", true, null, null, 4, 2));

        // v3-->v4