MavenProject projectA = createSucceededMavenProject("A");
        MavenProject projectB = createFailedMavenProject("B");
        MavenProject projectC = createSkippedMavenProject("C");
        projectC.setDependencies(singletonList(toDependency(projectB)));
        executionResult.setTopologicallySortedProjects(asList(projectA, projectB, projectC));

Jason van Zyl <******@****.***> 1172702970 +0000

        cache.put(project1, new SetWithResolutionResult(null, artifacts));

        assertArrayEquals(
                artifacts.toArray(new Artifact[0]),
                cache.get(project1).getArtifacts().toArray(new Artifact[0]));

        ProjectArtifactsCache.Key project2 = new ProjectArtifactsCache.Key() {};

KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>project-which-needs-directory-alignment</artifactId>
  <name>Maven</name>
  <version>1.0-beta-9</version>
  <inceptionYear>2001</inceptionYear>
  <description>Description</description>

        File pom1 = new File(pom0Basedir, "p1/pom.xml");

        // load everything...
        MavenProject project0 = getProjectWithDependencies(pom0);
        MavenProject project1 = getProjectWithDependencies(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertTrue(set.size() > 0, "No Artifacts");

        this(projects, projects);
    }

    /**
     * Creates a new project dependency graph based on the specified projects.
     *
     * @param allProjects All collected projects.
     * @param projects    The projects to create the dependency graph with.
     * @throws DuplicateProjectException
     * @throws CycleDetectedException
     * @since 3.5.0

        // load the child project, which inherits from p0...
        MavenProject project0 = getProjectWithDependencies(pom0);
        MavenProject project1 = getProjectWithDependencies(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        System.out.println("Project " + project1.getId() + " " + project1);
        Map map = project1.getArtifactMap();
        assertNotNull(map, "No artifacts");

        File pom0Basedir = pom0.getParentFile();

        File pom1 = new File(pom0Basedir, "p1/pom.xml");

        // load everything...
        MavenProject project0 = getProject(pom0);
        MavenProject project1 = getProject(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
    }

 * under the License.
 */
package org.apache.maven.project;

import java.io.File;

/**
 * Exception that occurs when the project list contains duplicate projects instead of ignoring one.
 *
 */
public class DuplicateProjectException extends Exception {
    private final String projectId;

    private final File existingProjectFile;

    private final File conflictingProjectFile;

        // compute the projects mapping
        if (projects == null) {
            List<MavenProject> projects = session.getProjects();
            if (projects != null) {
                Map<String, Map<String, Map<String, MavenProject>>> map = new HashMap<>();
                projects.forEach(project -> map.computeIfAbsent(project.getGroupId(), k -> new HashMap<>())