    @Test
    public void shouldReturnTrueForSafeUrl() {

        ResponseEntity<String> verifierResult = new ResponseEntity<>("", HttpStatus.NO_CONTENT);
        given(restTemplate.getForEntity(anyString(), eq(String.class),
            Matchers.<Map<String, String>>any())).willReturn(verifierResult);

        boolean isSafe = verifier.isSafe(LONG_URL);

        assertThat(isSafe).isTrue();
    }