如何检查java.lang.AssertionError（JUnit 5）

Question

Suppose the following class

class classToTest{
  public static void methodToTest() {
    assert false: "error is thrown";
  }
}

Is it possible to check with JUnit 5 if the methodToTest() throws the error evoked by the assert statement?

I only found in the JUnit 5 doc the assertThrows , but it checks only for exceptions and not for errors.

Asserts that execution of the supplied executable throws an exception of the expectedType and returns the exception.

How would a test case look like to check weather the error is thrown?

Answer 1

Actually, with assertThrows you can check for all Throwable like Exception, RuntimeException and Error. The assert keyword throws an AssertionError, which is a Throwable.

AssertionError error = Assertions.assertThrows(AssertionError.class, () -> {
    classToTest.methodToTest();
});
Assertions.assertEquals("error is thrown", error.getMessage());