third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/worker-testharness.js

   1 /*
   2  * worker-test-harness should be considered a temporary polyfill around
   3  * testharness.js for supporting Service Worker based tests. It should not be
   4  * necessary once the test harness is able to drive worker based tests natively.
   5  * See https://github.com/w3c/testharness.js/pull/82 for status of effort to
   6  * update upstream testharness.js. Once the upstreaming is complete, tests that
   7  * reference worker-test-harness should be updated to directly import
   8  * testharness.js.
   9  */
  10
  11 importScripts('/resources/testharness.js');
  12
  13 (function() {
  14   var next_cache_index = 1;
  15
  16   // Returns a promise that resolves to a newly created Cache object. The
  17   // returned Cache will be destroyed when |test| completes.
  18   function create_temporary_cache(test) {
  19     var uniquifier = String(++next_cache_index);
  20     var cache_name = self.location.pathname + '/' + uniquifier;
  21
  22     test.add_cleanup(function() {
  23         self.caches.delete(cache_name);
  24       });
  25
  26     return self.caches.delete(cache_name)
  27       .then(function() {
  28           return self.caches.open(cache_name);
  29         });
  30   }
  31
  32   self.create_temporary_cache = create_temporary_cache;
  33 })();
  34
  35 // Runs |test_function| with a temporary unique Cache passed in as the only
  36 // argument. The function is run as a part of Promise chain owned by
  37 // promise_test(). As such, it is expected to behave in a manner identical (with
  38 // the exception of the argument) to a function passed into promise_test().
  39 //
  40 // E.g.:
  41 //    cache_test(function(cache) {
  42 //      // Do something with |cache|, which is a Cache object.
  43 //    }, "Some Cache test");
  44 function cache_test(test_function, description) {
  45   promise_test(function(test) {
  46       return create_temporary_cache(test)
  47         .then(test_function);
  48     }, description);
  49 }