Exception e = assertThrows(Exception.class, () -> ee.evaluate("${session.rootDirectory}"));
        e = assertInstanceOf(IntrospectionException.class, e.getCause());
        e = assertInstanceOf(IllegalStateException.class, e.getCause());
        assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
    }

    @Test
    void testRootDirectory() throws Exception {

        this.projectId = projectId;
    }

    public MojoFailureException getMojoFailureException() {
        return (MojoFailureException) getCause();
    }

    public String getProjectId() {
        return projectId;
    }

    expected = assertThrows(PotentialDeadlockException.class, () -> lockA.lock());
    checkMessage(expected, "LockB -> LockA", "LockA -> LockB");
    // The causal chain should be cached.
    assertSame(firstException.getCause(), expected.getCause());
    // lockA should work after lockB is released.
    lockB.unlock();
    lockA.lock();
  }

  // Tests transitive deadlock detection.
  public void testDeadlock_threeLocks() {

        configuration.setResolveDependencies(true);

        try {
            return projectBuilder.build(pom, configuration).getProject();
        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof ModelBuildingException modelBuildingException) {
                String message = "In: " + pom + "\n\n";
                for (ModelProblem problem : modelBuildingException.getProblems()) {

        this.cause = cause;
    }

    /**
     * Gets the cause of the build failure.
     *
     * @return The cause of the build failure or {@code null} if unknown.
     */
    public Throwable getCause() {
        return cause;
    }

        return project;
    }

    public MojoExecution getExecution() {
        return mojoExecution;
    }

    public Mojo getMojo() {
        return mojo;
    }

    public Throwable getCause() {
        return cause;
    }

    }

    public MavenProject getProject() {
        return project;
    }

    public List<MojoExecution> getExecutionPlan() {
        return executionPlan;
    }

    public Throwable getCause() {
        return cause;
    }

    }

    /**
     * Constructs a new {@code MojoExecutionException} wrapping an underlying {@code Throwable}.
     *
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.
     *              A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.
     */
    public MojoException(Throwable cause) {
        super(cause);
    }

          assertThrows(
              InvocationTargetException.class,
              () -> checkArgumentMethod.invoke(null /* static method */, failingParams));
      assertFailureCause(ite.getCause(), IllegalArgumentException.class, failingParams);
    }
  }

  @GwtIncompatible("Reflection")
  @J2ktIncompatible
  public void testAllOverloads_checkState() throws Exception {

        initRepoSession(configuration);

        try {
            return projectBuilder.build(pom, configuration).getProject();
        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof ModelBuildingException modelBuildingException) {
                StringBuilder message = new StringBuilder("In: " + pom + "\n\n");