Implement delete methods for the various CannedBrowsingDataHelpers.

chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc

 // Copyright (c) 2012 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 "chrome/browser/browsing_data/browsing_data_database_helper.h"
 
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/common/database/database_identifier.h"
 
 namespace {
 
+using webkit_database::DatabaseIdentifier;
+
 class CannedBrowsingDataDatabaseHelperTest : public testing::Test {
   content::TestBrowserThreadBundle thread_bundle_;
 };
 
 TEST_F(CannedBrowsingDataDatabaseHelperTest, Empty) {
   TestingProfile profile;
 
   const GURL origin("http://host1:1/");
   const char db[] = "db1";
 
   scoped_refptr<CannedBrowsingDataDatabaseHelper> helper(
       new CannedBrowsingDataDatabaseHelper(&profile));
 
   ASSERT_TRUE(helper->empty());
   helper->AddDatabase(origin, db, std::string());
   ASSERT_FALSE(helper->empty());
   helper->Reset();
   ASSERT_TRUE(helper->empty());
 }
 
+TEST_F(CannedBrowsingDataDatabaseHelperTest, Delete) {
+  TestingProfile profile;
+
+  const GURL origin1("http://host1:9000");
+  const char db1[] = "db1";
+
+  const GURL origin2("http://example.com");
+  const char db2[] = "db2";
+
+  const GURL origin3("http://foo.example.com");
+  const char db3[] = "db3";
+
+  scoped_refptr<CannedBrowsingDataDatabaseHelper> helper(
+      new CannedBrowsingDataDatabaseHelper(&profile));
+
+  EXPECT_TRUE(helper->empty());
+  helper->AddDatabase(origin1, db1, std::string());
+  helper->AddDatabase(origin2, db2, std::string());
+  helper->AddDatabase(origin3, db3, std::string());
+  EXPECT_EQ(3u, helper->GetDatabaseCount());
+  helper->DeleteDatabase(
+      DatabaseIdentifier::CreateFromOrigin(origin2).ToString(), db1);
+  EXPECT_EQ(3u, helper->GetDatabaseCount());
+  helper->DeleteDatabase(
+      DatabaseIdentifier::CreateFromOrigin(origin2).ToString(), db2);
+  EXPECT_EQ(2u, helper->GetDatabaseCount());
+}
+
 TEST_F(CannedBrowsingDataDatabaseHelperTest, IgnoreExtensionsAndDevTools) {
   TestingProfile profile;
 
   const GURL origin1("chrome-extension://abcdefghijklmnopqrstuvwxyz/");
   const GURL origin2("chrome-devtools://abcdefghijklmnopqrstuvwxyz/");
   const char db[] = "db1";
 
   scoped_refptr<CannedBrowsingDataDatabaseHelper> helper(
       new CannedBrowsingDataDatabaseHelper(&profile));
 
   ASSERT_TRUE(helper->empty());
   helper->AddDatabase(origin1, db, std::string());
   ASSERT_TRUE(helper->empty());
   helper->AddDatabase(origin2, db, std::string());
   ASSERT_TRUE(helper->empty());
   helper->Reset();
   ASSERT_TRUE(helper->empty());
 }
 
 }  // namespace