| // META: title=Request ETag |
| // META: global=window,worker |
| // META: script=/common/utils.js |
| |
| promise_test(function() { |
| var cacheBuster = token(); // ensures first request is uncached |
| var url = "../resources/cache.py?v=" + cacheBuster; |
| var etag; |
| |
| // make the first request |
| return fetch(url).then(function(response) { |
| // ensure we're getting the regular, uncached response |
| assert_equals(response.status, 200); |
| assert_equals(response.headers.get("X-HTTP-STATUS"), null) |
| |
| return response.text(); // consuming the body, just to be safe |
| }).then(function(body) { |
| // make a second request |
| return fetch(url); |
| }).then(function(response) { |
| // while the server responds with 304 if our browser sent the correct |
| // If-None-Match request header, at the JavaScript level this surfaces |
| // as 200 |
| assert_equals(response.status, 200); |
| assert_equals(response.headers.get("X-HTTP-STATUS"), "304") |
| |
| etag = response.headers.get("ETag") |
| |
| return response.text(); // consuming the body, just to be safe |
| }).then(function(body) { |
| // make a third request, explicitly setting If-None-Match request header |
| var headers = { "If-None-Match": etag } |
| return fetch(url, { headers: headers }) |
| }).then(function(response) { |
| // 304 now surfaces thanks to the explicit If-None-Match request header |
| assert_equals(response.status, 304); |
| }); |
| }, "Testing conditional GET with ETags"); |