@Test
public void testTransformShouldNotSetResponseHeaderWhenRawResponseIsNull() {

    setMocksForMessageContent();
    given(browserMobHttpResponse.getRawResponse()).willReturn(null);
    setMocksForMessageConfiguration();
    //WHEN
    underTest.transformResponse(browserMobHttpResponse);
    //THEN
    verify(response, never()).addHeader("respName", "respValue");
}