RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE,
                assertThrows(IllegalStateException.class, session::getRootDirectory)
                        .getMessage());
    }

    @Test
    void testRootDirectory() {
        RepositorySystemSession rss = new DefaultRepositorySystemSession(h -> false);
        DefaultMavenExecutionRequest mer = new DefaultMavenExecutionRequest();

                () -> assertActivation(false, newExistsProfile("${project.rootDirectory}"), context));
        assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
    }

    @Test
    void testRootDirectory() {
        assertActivation(false, newExistsProfile("${project.rootDirectory}/someFile.txt"), context);
        assertActivation(true, newMissingProfile("${project.rootDirectory}/someFile.txt"), context);

        e = assertInstanceOf(IllegalStateException.class, e.getCause());
        assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
    }

    @Test
    void testRootDirectory() throws Exception {
        this.rootDirectory = Paths.get("myRootDirectory");
        ExpressionEvaluator ee = createExpressionEvaluator(createDefaultProject(), new Properties());

        e = assertInstanceOf(IllegalStateException.class, e.getCause());
        assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
    }

    @Test
    void testRootDirectory() throws Exception {
        this.rootDirectory = Paths.get("myRootDirectory");
        ExpressionEvaluator ee = createExpressionEvaluator(createDefaultProject(), null, new Properties());