() -> buildPom("unique-repo-id/artifact-repo"),
                "Non-unique repository ids did not cause validation error");
    }

    /* MNG-4193 */
    @Test
    void testValidationErrorUponNonUniquePluginRepositoryId() throws Exception {
        assertThrows(
                ProjectBuildingException.class,
                () -> buildPom("unique-repo-id/plugin-repo"),

        for (int i = 0; i < count; i++) {
            props.put("name" + Long.toHexString(entropy.nextLong()), "value" + Long.toHexString(entropy.nextLong()));
        }
        count = entropy.nextInt(3);
        List<Repository> repos = new ArrayList<>();
        for (int i = 0; i < count; i++) {
            Repository r = Repository.newBuilder()
                    .id("id" + Long.toHexString(entropy.nextLong()))

org.apache.maven.its.mng3906 e 0.1 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources src/main/java/org/apache/maven/its/mng3906/SomeClass.java src/main/java/org/apache/maven/its/mng3906/SomeClass.java package org.apache.maven.its.mng3906; public class SomeClass { } META-INF/maven/org.apache.maven.its.mng3906/e/pom.xml 4.0.0 org.apache.maven.its.mng3906 e 0.1 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources META-INF/maven/org....

                .setLocalRepository(repo);

        DefaultRepositorySystemSession repositorySession =
                new DefaultRepositorySystemSession(h -> false); // no close handle
        repositorySession.setLocalRepositoryManager(new SimpleLocalRepositoryManagerFactory()
                .newInstance(repositorySession, new LocalRepository(repo.getUrl())));
        MavenSession session =

org.apache.maven.its.mng3906 a 0.2 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources src/main/java/org/apache/maven/its/mng3906/SomeClass.java src/main/java/org/apache/maven/its/mng3906/SomeClass.java package org.apache.maven.its.mng3906; public class SomeClass { } META-INF/maven/org.apache.maven.its.mng3906/a/pom.xml 4.0.0 org.apache.maven.its.mng3906 a 0.2 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources META-INF/maven/org....

org.apache.maven.its.mng3906 c 0.1 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources src/main/java/org/apache/maven/its/mng3906/SomeClass.java src/main/java/org/apache/maven/its/mng3906/SomeClass.java package org.apache.maven.its.mng3906; public class SomeClass { } META-INF/maven/org.apache.maven.its.mng3906/c/pom.xml 4.0.0 org.apache.maven.its.mng3906 c 0.1 jar maven-core-it file:///${basedir}/repo true true . pom.xml src/** src/main/resources META-INF/maven/org....

                    afe.getMessage());
        }
        // but ok from repo: local disk is ignored
        testInheritance("tricky-flat-artifactId-urls", true);

        // parent references child with directory name (which is not artifact id)
        // then relative path calculation will success during build from disk but fail when calculated from repo
        testInheritance("tricky-flat-directory-urls", false);

maven.project.extensions      = ${maven.project.conf}/extensions.xml
maven.user.extensions         = ${maven.user.conf}/extensions.xml

#
# Maven central repository URL.
#
maven.repo.central = ${env.MAVEN_REPO_CENTRAL:-https://repo.maven.apache.org/maven2}

#
# Maven Resolver Configuration
#
# Align locking to the same as in Maven 3.9.x

 The metadata file name is:

 * <<<maven-metadata.xml>>> in a remote repository,

 * <<<maven-metadata-\<repo-id>.xml>>> in a local repository, for metadata from a repository with <<<repo-id>>> identifier.

 []

 Depending on what the directory represents ("groupId", "groupId/artifactId" or "groupId/artifactId/version"),

        assertSame(mirrorC, mirrorSelector.getMirror(repo, Arrays.asList(mirrorC)));
        assertNull(mirrorSelector.getMirror(repo, Arrays.asList(mirrorD)));
    }

    /**
     * Build an ArtifactRepository object.
     *
     * @param id
     * @param url
     * @return
     */
    private ArtifactRepository getRepo(String id, String url) {