ComponentUtil.getJobExecutor("test");
            fail("Should throw exception");
        } catch (Exception e) {
            // Expected
        }
    }

    @Test
    public void test_getComponent_byClass_fromMap() {
        String testInstance = "test_instance";
        ComponentUtil.register(testInstance, String.class.getCanonicalName());

        String retrieved = ComponentUtil.getComponent(String.class);