@Test
public void testGetAndClear01() {

    // setup parameters
    HttpSession session = new MockHttpSession();
    request.setSession(session);
    TransactionToken token = new TransactionToken("TransactionToken");
    // prepare store instance
    store = new HttpSessionTransactionTokenStore();
    // run
    String actuals = store.getAndClear(token);
    // assert
    assertThat(actuals, is(nullValue()));
}