void testValidate() {
        Artifact plugin = new DefaultArtifact(
                "org.apache.maven.its.plugins",
                "maven-it-plugin",
                "0.1",
                "compile",
                "jar",
                null,
                new DefaultArtifactHandler("ignore"));
        PluginDescriptor descriptor = new PluginDescriptor();
        descriptor.setGroupId("org.apache.maven.its.plugins");

            Artifact artifact = createArtifact("artifact", "1.0");

            File file = new File(artifactBasedir, "artifact-1.0.jar");
            assertEquals("dummy", new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8).trim());

            artifactDeployer.deploy(file, artifact, remoteRepository(), localRepository());

                                                newPlugin("maven-surefire-plugin", "test"),
                                                newPlugin("maven-jar-plugin", "jar"),
                                                newPlugin("maven-install-plugin", "install"),
                                                newPlugin("maven-deploy-plugin", "deploy")))

        VersionRange versionRange = VersionRange.createFromVersionSpec(version);

        return artifactFactory.createDependencyArtifact(
                GROUP_ID, id, versionRange, "jar", null, scope, inheritedScope, optional);
    }

    protected ResolutionNode createResolutionNode(Artifact Artifact) {
        return new ResolutionNode(Artifact, Collections.<ArtifactRepository>emptyList());
    }

                }
            }
        }
        return plugins.values();
    }

    private PluginInfo extractPluginInfo(Artifact artifact) {
        // sanity: jar, no classifier and file exists
        if (artifact != null
                && "jar".equals(artifact.getExtension())
                && "".equals(artifact.getClassifier())
                && artifact.getPath() != null) {

        if ("g".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {
                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {
                throw new ArtifactMetadataRetrievalException("Error retrieving metadata", e, a);
            }
        }

        if ("g".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {
                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {
                throw new ArtifactMetadataRetrievalException("Error retrieving metadata", e, a);
            }
        }

        dep1.setType( "jar" );

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

        dep1.addExclusion( exc );

        Dependency dep2 = new Dependency();
        dep2.setGroupId( "test" );
        dep2.setArtifactId( "test-artifact2" );
        dep2.setVersion( "1" );
        dep2.setType( "jar" );

    @Test
    void testEmptyConstructor() {
        MavenProject project = new MavenProject();

        assertEquals(
                MavenProject.EMPTY_PROJECT_GROUP_ID + ":" + MavenProject.EMPTY_PROJECT_ARTIFACT_ID + ":jar:"
                        + MavenProject.EMPTY_PROJECT_VERSION,
                project.getId());
    }

    @Test
    void testClone() throws Exception {

import org.apache.maven.artifact.Artifact;

/** Artifact Filter which filters on artifact type */
@Deprecated
public class TypeArtifactFilter implements ArtifactFilter {
    private String type = "jar";

    public TypeArtifactFilter(String type) {
        this.type = type;
    }

    public boolean include(Artifact artifact) {
        return type.equals(artifact.getType());
    }

    @Override