### Question:
Bom { public static Bom readBom(Path pomFile) throws MavenRepositoryException { RepositorySystem system = RepositoryUtility.newRepositorySystem(); RepositorySystemSession session = RepositoryUtility.newSession(system); MavenProject mavenProject = RepositoryUtility.createMavenProject(pomFile, session); String coordinates = mavenProject.getGroupId() + ":" + mavenProject.getArtifactId() + ":" + mavenProject.getVersion(); DependencyManagement dependencyManagement = mavenProject.getDependencyManagement(); List<org.apache.maven.model.Dependency> dependencies = dependencyManagement.getDependencies(); ArtifactTypeRegistry registry = session.getArtifactTypeRegistry(); ImmutableList<Artifact> artifacts = dependencies.stream() .map(dependency -> RepositoryUtils.toDependency(dependency, registry)) .map(Dependency::getArtifact) .filter(artifact -> !shouldSkipBomMember(artifact)) .collect(ImmutableList.toImmutableList()); Bom bom = new Bom(coordinates, artifacts); return bom; } @VisibleForTesting  Bom(String coordinates, ImmutableList<Artifact> artifacts); ImmutableList<Artifact> getManagedDependencies(); String getCoordinates(); static Bom readBom(Path pomFile); static Bom readBom(String coordinates, List<String> mavenRepositoryUrls); static Bom readBom(String coordinates); static boolean shouldSkipBomMember(Artifact artifact);  }### Answer:
@Test public void testReadBom_coordinates_invalidRepository() { String coordinates = "com.google.cloud:google-cloud-bom:pom:0.32.0-alpha"; try { Bom.readBom(coordinates, ImmutableList.of("http: fail("readBom should not access Maven Central when it's not in the repository list."); } catch (ArtifactDescriptorException ex) { assertEquals("Failed to read artifact descriptor for " + coordinates, ex.getMessage()); } }