TestResponse expectResponse(TestResponse response, int statusCode, { body, Map<String, dynamic> headers })

Short-hand for expect and hasResponse that returns response.

This convenience method runs an expectation on response using hasResponse built from statusCode, body, and headers, that is:

    expect(response, hasResponse(statusCode, body, headers: headers));

It makes typical test code easier to compose without having to declare local variables:

    expectResponse(await client.request("/foo").get(),
      200, body: "foo", headers: {"x-foo": "foo"});

This method always returns response so that it can be used elsewhere in the test.

Source 

TestResponse expectResponse(
    TestResponse response,
    int statusCode, {dynamic body, Map<String, dynamic> headers}) {
  expect(response, hasResponse(statusCode, body, headers: headers));
  return response;
}