Address test slowness with Cache Storage match()/matchAll() tests

LayoutTests/http/tests/cachestorage/resources/test-helpers.js

 (function() {
   var next_cache_index = 1;
 
   // Returns a promise that resolves to a newly created Cache object. The
   // returned Cache will be destroyed when |test| completes.
   function create_temporary_cache(test) {
     var uniquifier = String(++next_cache_index);
     var cache_name = self.location.pathname + '/' + uniquifier;
 
     test.add_cleanup(function() {
@@ skipping 17 matching lines @@
 // E.g.:
 //    cache_test(function(cache) {
 //      // Do something with |cache|, which is a Cache object.
 //    }, "Some Cache test");
 function cache_test(test_function, description) {
   promise_test(function(test) {
       return create_temporary_cache(test)
         .then(test_function);
     }, description);
 }
+
+// A set of Request/Response pairs to be used with prepopulated_cache_test().
+var simple_entries = [
+  {
+    name: 'a',
+    request: new Request('http://example.com/a'),
+    response: new Response('')
+  },
+
+  {
+    name: 'b',
+    request: new Request('http://example.com/b'),
+    response: new Response('')
+  },
+
+  {
+    name: 'a_with_query',
+    request: new Request('http://example.com/a?q=r'),
+    response: new Response('')
+  },
+
+  {
+    name: 'A',
+    request: new Request('http://example.com/A'),
+    response: new Response('')
+  },
+
+  {
+    name: 'a_https',
+    request: new Request('https://example.com/a'),
+    response: new Response('')
+  },
+
+  {
+    name: 'a_org',
+    request: new Request('http://example.org/a'),
+    response: new Response('')
+  },
+
+  {
+    name: 'cat',
+    request: new Request('http://example.com/cat'),
+    response: new Response('')
+  },
+
+  {
+    name: 'catmandu',
+    request: new Request('http://example.com/catmandu'),
+    response: new Response('')
+  },
+
+  {
+    name: 'cat_num_lives',
+    request: new Request('http://example.com/cat?lives=9'),
+    response: new Response('')
+  },
+
+  {
+    name: 'cat_in_the_hat',
+    request: new Request('http://example.com/cat/in/the/hat'),
+    response: new Response('')
+  },
+
+  {
+    name: 'secret_cat',
+    request: new Request('http://tom:jerry@example.com/cat'),
+    response: new Response('')
+  },
+
+  {
+    name: 'top_secret_cat',
+    request: new Request('http://tom:j3rry@example.com/cat'),
+    response: new Response('')
+  },
+  {
+    name: 'non_2xx_response',
+    request: new Request('http://example.com/non2xx'),
+    response: new Response('', {status: 404, statusText: 'nope'})
+  },
+
+  {
+    name: 'error_response',
+    request: new Request('http://example.com/error'),
+    response: Response.error()
+  },
+];
+
+// A set of Request/Response pairs to be used with prepopulated_cache_test().
+// These contain a mix of test cases that use Vary headers.
+var vary_entries = [
+  {
+    name: 'vary_cookie_is_cookie',
+    request: new Request('http://example.com/c',
+                         {headers: {'Cookies': 'is-for-cookie'}}),
+    response: new Response('',
+                           {headers: {'Vary': 'Cookies'}})
+  },
+
+  {
+    name: 'vary_cookie_is_good',
+    request: new Request('http://example.com/c',
+                         {headers: {'Cookies': 'is-good-enough-for-me'}}),
+    response: new Response('',
+                           {headers: {'Vary': 'Cookies'}})
+  },
+
+  {
+    name: 'vary_cookie_absent',
+    request: new Request('http://example.com/c'),
+    response: new Response('',
+                           {headers: {'Vary': 'Cookies'}})
+  },
+
+  {
+    name: 'vary_wildcard',
+    request: new Request('http://example.com/c',
+                         {headers: {'Cookies': 'x', 'X-Key': '1'}}),
+    response: new Response('',
+                           {headers: {'Vary': '*'}})
+  }
+];
+
+// Run |test_function| with a Cache object and a map of entries. Prior to the
+// call, the Cache is populated by cache entries from |entries|. The latter is
+// expected to be an Object mapping arbitrary keys to objects of the form
+// {request: <Request object>, response: <Response object>}. There's no
+// guarantee on the order in which entries will be added to the cache.
+//
+// |test_function| should return a Promise that can be used with promise_test.
+function prepopulated_cache_test(entries, test_function, description) {
+  cache_test(function(cache) {
+      var p = Promise.resolve();
+      var hash = {};
+      return Promise.all(entries.map(function(entry) {
+          hash[entry.name] = entry;
+          return cache.put(entry.request.clone(),
+                           entry.response.clone())
+            .catch(function(e) {
+                assert_unreached(
+                  'Test setup failed for entry ' + entry.name + ': ' + e);
+            });
+        }))
+        .then(function() {
+            assert_equals(Object.keys(hash).length, entries.length);
+        })
+        .then(function() {
+            return test_function(cache, hash);
+        });
+    }, description);
+}