@Test
public void testPut() {

    subject.put(FIRST_TEST_KEY, PREDICTABLE_CACHE_ACTION_1);
    assertEquals(RESPONSE_1, subject.get(FIRST_TEST_KEY));
    subject.put(FIRST_TEST_KEY, PREDICTABLE_CACHE_ACTION_2);
    String response = subject.get(FIRST_TEST_KEY);
    assertNotEquals(RESPONSE_1, response);
    assertEquals(RESPONSE_2, response);
}