assertThrows(NullPointerException.class, () -> Class.forName(null));
    }

    @Test
    @DisplayName("Happy path: class is loadable via fully qualified name")
    void testClassForName() throws Exception {
        // Act
        Class<?> c = Class.forName("jcifs.smb.SessionSetupHandler");

        // Assert
        assertEquals(SessionSetupHandler.class, c);
        assertTrue(c.isInterface());