public void getRetrievesHeaders() {
driver.addExpectation(
new ClientDriverRequest("/"),
new ClientDriverResponse("", null).withHeader("X-foo", "barrr"));
Response response = get(baseUrl);
// multiple ways to assert on a header
assertThat(response, hasHeaderWithValue("X-foo", equalTo("barrr")));
assertThat(response, hasHeader("X-foo", equalTo("barrr")));
assertThat(response, hasHeader("X-foo", "barrr"));