ServiceWorker: Support longest-prefix-match for registration scope

content/browser/service_worker/service_worker_utils_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 TEST(ServiceWorkerUtilsTest, ScopeMatches) {
@@ skipping 51 matching lines @@
                                        GURL("http://www.example.com/a/x/b")));
   ASSERT_TRUE(
       ServiceWorkerUtils::ScopeMatches(GURL("http://www.example.com/*/x/*"),
                                        GURL("http://www.example.com/*/x/b")));
 
   // URLs canonicalize \ to / so this is equivalent to  "...//*" and "...//x"
   ASSERT_TRUE(ServiceWorkerUtils::ScopeMatches(
       GURL("http://www.example.com/\\*"), GURL("http://www.example.com/\\x")));
 }
 
+TEST(ServiceWorkerUtilsTest, FindLongestScopeMatch) {
+  LongestScopeMatcher matcher(GURL("http://www.example.com/xxx"));
+
+  // "/xx*" should be matched longest.
+  ASSERT_TRUE(matcher.MatchLongest(GURL("http://www.example.com/x*")));
+  ASSERT_FALSE(matcher.MatchLongest(GURL("http://www.example.com/*")));
+  ASSERT_TRUE(matcher.MatchLongest(GURL("http://www.example.com/xx*")));
+
+  // "/xxx" has the same length with "/xx*" and shouldn't be matched longest.
+  // TODO(nhiroki): Should we prioritize "/xxx" over "/xx*"?
+  ASSERT_FALSE(matcher.MatchLongest(GURL("http://www.example.com/xxx")));
+
+  // "xxx*" should be matched longer than "/xx*".
+  ASSERT_TRUE(matcher.MatchLongest(GURL("http://www.example.com/xxx*")));
+
+  ASSERT_FALSE(matcher.MatchLongest(GURL("http://www.example.com/xxxx*")));
+}
+
 }  // namespace content