}

    @Test
    void testTrivialConsumer() throws Exception {
        InternalMavenSession.from(InternalSession.from(session))
                .getMavenSession()
                .getRequest()
                .setRootDirectory(Paths.get("src/test/resources/consumer/trivial"));

        Path file = Paths.get("src/test/resources/consumer/trivial/child/pom.xml");

        ModelBuilder.ModelBuilderSession mbs = modelBuilder.newSession();

        MavenExecutionRequest mavenRequest = new DefaultMavenExecutionRequest();
        mavenRequest.setLocalRepository(mavenRepositorySystem.createLocalRepository(new File("target/test-repo/")));
        mavenRequest.setRootDirectory(Paths.get("src/test/resources/projects/tree"));

        DefaultProjectBuildingRequest request = new DefaultProjectBuildingRequest();
        RepositorySystemSession.CloseableSession rsession = repositorySessionFactory

        FileUtils.copyDirectoryStructure(new File("src/test/resources/projects/grandchild-check"), tempDir.toFile());

        MavenSession mavenSession = createMavenSession(null);
        mavenSession.getRequest().setRootDirectory(tempDir);
        ProjectBuildingRequest configuration = new DefaultProjectBuildingRequest();
        configuration.setRepositorySession(mavenSession.getRepositorySession());

        InternalMavenSession.from(InternalSession.from(buildingRequest.getRepositorySession()))
                .getMavenSession()
                .getRequest()
                .setRootDirectory(projectRoot);

        try (InputStream pomResource =
                DefaultMavenProjectBuilderTest.class.getResourceAsStream("/projects/reread/pom1.xml")) {

            // maven requires this to be set; so default it (and see below at POM)
            request.setMultiModuleProjectDirectory(
                    context.invokerRequest.topDirectory().toFile());
            request.setRootDirectory(context.invokerRequest.topDirectory());
        }

        request.setToolchains(
                Optional.ofNullable(context.effectiveToolchains).map(PersistedToolchains::getToolchains).stream()

                            .build();

                    if (pomFile != null) {
                        project.setRootDirectory(rootLocator.findRoot(pomFile.getParent()));
                    }

                    ModelBuilderResult result;
                    try {
                        result = modelBuilderSession.build(request);

        if (context.invokerRequest.rootDirectory().isPresent()) {
            request.setMultiModuleProjectDirectory(
                    context.invokerRequest.rootDirectory().get().toFile());
            request.setRootDirectory(context.invokerRequest.rootDirectory().get());
        }

        request.addPluginGroup("org.apache.maven.plugins");
        request.addPluginGroup("org.codehaus.mojo");
    }

    /**

        request.setUserProperties(cliRequest.userProperties);
        request.setMultiModuleProjectDirectory(cliRequest.multiModuleProjectDirectory);
        request.setRootDirectory(cliRequest.rootDirectory);
        request.setTopDirectory(cliRequest.topDirectory);
        request.setPom(determinePom(commandLine, workingDirectory, baseDirectory));

        if (rootDirectory == null) {
            throw new IllegalStateException(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE);
        }
        return rootDirectory;
    }

    public void setRootDirectory(Path rootDirectory) {
        this.rootDirectory = rootDirectory;
    }

                && Files.isRegularFile(root.resolve("../pom.xml"))) {
            root = root.getParent();
        }
        mSession.getMavenSession().getRequest().setRootDirectory(root);

        return new PomTestWrapper(pomFile, projectBuilder.build(pomFile, config).getProject());
    }

    protected void assertModelEquals(PomTestWrapper pom, Object expected, String expression) {