super();
    }

    @Test
    void testResolveParentThrowsUnresolvableModelExceptionWhenNotFound() throws Exception {
        final Parent parent = new Parent();
        parent.setGroupId("org.apache");
        parent.setArtifactId("apache");
        parent.setVersion("0");

        UnresolvableModelException e = assertThrows(
                UnresolvableModelException.class,

                "compile",
                "jar",
                null,
                new DefaultArtifactHandler("ignore"));
        PluginDescriptor descriptor = new PluginDescriptor();
        descriptor.setGroupId("org.apache.maven.its.plugins");
        descriptor.setArtifactId("maven-it-plugin");
        descriptor.setVersion("0.1");
        List<String> errors = new ArrayList<>();

        /*
        Dependency dep1 = new Dependency();
        dep1.setGroupId( "test" );
        dep1.setArtifactId( "test-artifact" );
        dep1.setVersion( "1" );
        dep1.setType( "jar" );

        Exclusion exc = new Exclusion();
        exc.setGroupId( "test" );
        exc.setArtifactId( "test-artifact3" );

        dep1.addExclusion( exc );

        MavenProject project = new MavenProject();
        project.setGroupId("test");
        project.setArtifactId(artifactId);
        return project;
    }

    private Dependency toDependency(MavenProject mavenProject) {
        Dependency dependency = new Dependency();
        dependency.setGroupId(mavenProject.getGroupId());
        dependency.setArtifactId(mavenProject.getArtifactId());

            plugins = Collections.emptySet();
        }

        return plugins;
    }

    private Plugin newPlugin(String artifactId, String... goals) {
        Plugin plugin = new Plugin();

        plugin.setGroupId("org.apache.maven.plugins");
        plugin.setArtifactId(artifactId);

        for (String goal : goals) {
            PluginExecution pluginExecution = new PluginExecution();

        setGroupId(plugin.getGroupId());
        setArtifactId(plugin.getArtifactId());

        setRepositorySession(session);

        setRepositories(repositories);
    }

    public String getGroupId() {
        return groupId;
    }

    public DefaultPluginVersionRequest setGroupId(String groupId) {
        this.groupId = groupId;

        return this;

        assertEquals(groupId + ":" + artifactId + ":" + type + ":" + classifier, artifact.getDependencyConflictId());
    }

    @Test
    void testGetDependencyConflictIdNullGroupId() {
        artifact.setGroupId(null);
        assertEquals(null + ":" + artifactId + ":" + type + ":" + classifier, artifact.getDependencyConflictId());
    }

    @Test
    void testGetDependencyConflictIdNullClassifier() {

        result.setGroupId("org.apache");
        result.setArtifactId("A");
        result.setVersion("1.2");
        return result;
    }

    static Dependency toDependency(MavenProject mavenProject) {
        final Dependency dependency = new Dependency();
        dependency.setArtifactId(mavenProject.getArtifactId());
        dependency.setGroupId(mavenProject.getGroupId());

    String getGroupId();

    /**
     * Sets the group id of the plugin.
     *
     * @param groupId The group id of the plugin.
     * @return This request, never {@code null}.
     */
    PluginVersionRequest setGroupId(String groupId);

    /**
     * Gets the artifact id of the plugin.
     *
     * @return The artifact id of the plugin.
     */
    String getArtifactId();

    /**

        this.groupId = groupId;
        this.artifactId = artifactId;
        this.repository = repository;
    }

    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }

    public String getArtifactId() {
        return artifactId;
    }

    public void setArtifactId(String artifactId) {