Create BlacklistManager, which will aggregate individual blacklists into one compiled one

chrome/browser/privacy_blacklist/blacklist_manager_unittest.cc

Index: chrome/browser/privacy_blacklist/blacklist_manager_unittest.cc
diff --git a/chrome/browser/privacy_blacklist/blacklist_manager_unittest.cc b/chrome/browser/privacy_blacklist/blacklist_manager_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..995184f57b90405b9ea018058df1f96c94230133
--- /dev/null
+++ b/chrome/browser/privacy_blacklist/blacklist_manager_unittest.cc
@@ -0,0 +1,280 @@
+// Copyright (c) 2009 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/privacy_blacklist/blacklist_manager.h"
+
+#include "base/message_loop.h"
+#include "base/path_service.h"
+#include "base/scoped_temp_dir.h"
+#include "base/thread.h"
+#include "chrome/browser/privacy_blacklist/blacklist.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/notification_service.h"
+#include "chrome/test/testing_profile.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class MyTestingProfile : public TestingProfile {
+ public:
+  MyTestingProfile() {
+    EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
+    path_ = temp_dir_.path();
+  }
+
+ private:
+  ScopedTempDir temp_dir_;
+
+  DISALLOW_COPY_AND_ASSIGN(MyTestingProfile);
+};
+
+class TestBlacklistPathProvider : public BlacklistPathProvider {
+ public:
+  explicit TestBlacklistPathProvider(Profile* profile) : profile_(profile) {
+  }
+
+  virtual std::vector<FilePath> GetBlacklistPaths() {
+    return paths_;
+  }
+
+  void AddPath(const FilePath& path) {
+    paths_.push_back(path);
+    NotificationService::current()->Notify(
+        NotificationType::PRIVACY_BLACKLIST_PATH_PROVIDER_UPDATED,
+        Source<Profile>(profile_),
+        Details<BlacklistPathProvider>(this));
+  }
+
+ private:
+  Profile* profile_;
+
+  std::vector<FilePath> paths_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestBlacklistPathProvider);
+};
+
+class BlacklistManagerTest : public testing::Test {
+ public:
+  virtual void SetUp() {
+    ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir_));
+    test_data_dir_ = test_data_dir_.AppendASCII("blacklist_samples");
+  }
+
+  virtual void TearDown() {
+    loop_.RunAllPending();
+  }
+
+ protected:
+  FilePath test_data_dir_;
+
+  MyTestingProfile profile_;
+
+ private:
+  MessageLoop loop_;
+};
+
+TEST_F(BlacklistManagerTest, Basic) {
+  scoped_refptr<BlacklistManager> manager(
+      new BlacklistManager(&profile_, NULL));
+
+  const Blacklist* blacklist = manager->GetCompiledBlacklist();
+
+  // We should get an empty, but valid object.
+  ASSERT_TRUE(blacklist);
+  EXPECT_TRUE(blacklist->is_good());
+
+  // Repeated invocations of GetCompiledBlacklist should return the same object.
+  EXPECT_EQ(blacklist, manager->GetCompiledBlacklist());
+}
+
+TEST_F(BlacklistManagerTest, BlacklistPathProvider) {
+  scoped_refptr<BlacklistManager> manager(
+      new BlacklistManager(&profile_, NULL));
+
+  const Blacklist* blacklist1 = manager->GetCompiledBlacklist();
+  EXPECT_FALSE(blacklist1->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+
+  TestBlacklistPathProvider provider(&profile_);
+  manager->RegisterBlacklistPathProvider(&provider);
+
+  // Blacklist should not get recompiled.
+  EXPECT_EQ(blacklist1, manager->GetCompiledBlacklist());
+
+  provider.AddPath(test_data_dir_.AppendASCII("annoying_ads.pbl"));
+
+  const Blacklist* blacklist2 = manager->GetCompiledBlacklist();
+
+  // Added a real blacklist, the manager should recompile.
+  EXPECT_NE(blacklist1, blacklist2);
+  EXPECT_TRUE(blacklist2->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+
+  manager->UnregisterBlacklistPathProvider(&provider);
+
+  // Just unregistering the provider doesn't remove the blacklist paths
+  // from the manager.
+  EXPECT_EQ(blacklist2, manager->GetCompiledBlacklist());
+}
+
+TEST_F(BlacklistManagerTest, RealThread) {
+  base::Thread backend_thread("backend_thread");
+  backend_thread.Start();
+
+  scoped_refptr<BlacklistManager> manager(
+      new BlacklistManager(&profile_, &backend_thread));
+
+  // Make sure all pending tasks run.
+  backend_thread.Stop();
+  backend_thread.Start();
+
+  const Blacklist* blacklist1 = manager->GetCompiledBlacklist();
+  EXPECT_FALSE(blacklist1->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+
+  TestBlacklistPathProvider provider(&profile_);
+  manager->RegisterBlacklistPathProvider(&provider);
+
+  // Make sure all pending tasks run.
+  backend_thread.Stop();
+  backend_thread.Start();
+
+  // Blacklist should not get recompiled.
+  EXPECT_EQ(blacklist1, manager->GetCompiledBlacklist());
+
+  provider.AddPath(test_data_dir_.AppendASCII("annoying_ads.pbl"));
+
+  // Make sure all pending tasks run.
+  backend_thread.Stop();
+  backend_thread.Start();
+
+  const Blacklist* blacklist2 = manager->GetCompiledBlacklist();
+
+  // Added a real blacklist, the manager should recompile.
+  EXPECT_NE(blacklist1, blacklist2);
+  EXPECT_TRUE(blacklist2->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+
+  manager->UnregisterBlacklistPathProvider(&provider);
+
+  // Make sure all pending tasks run.
+  backend_thread.Stop();
+  backend_thread.Start();
+
+  // Just unregistering the provider doesn't remove the blacklist paths
+  // from the manager.
+  EXPECT_EQ(blacklist2, manager->GetCompiledBlacklist());
+}
+
+TEST_F(BlacklistManagerTest, CompiledBlacklistStaysOnDisk) {
+  {
+    scoped_refptr<BlacklistManager> manager(
+        new BlacklistManager(&profile_, NULL));
+
+    TestBlacklistPathProvider provider(&profile_);
+    manager->RegisterBlacklistPathProvider(&provider);
+    provider.AddPath(test_data_dir_.AppendASCII("annoying_ads.pbl"));
+    const Blacklist* blacklist = manager->GetCompiledBlacklist();
+    EXPECT_TRUE(blacklist->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+    manager->UnregisterBlacklistPathProvider(&provider);
+  }
+
+  {
+    scoped_refptr<BlacklistManager> manager(
+        new BlacklistManager(&profile_, NULL));
+
+    // Make sure we read the compiled blacklist from disk and don't even touch
+    // the paths providers.
+    const Blacklist* blacklist = manager->GetCompiledBlacklist();
+    EXPECT_TRUE(blacklist->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+  }
+}
+
+TEST_F(BlacklistManagerTest, BlacklistPathReadError) {
+  scoped_refptr<BlacklistManager> manager(
+      new BlacklistManager(&profile_, NULL));
+
+  TestBlacklistPathProvider provider(&profile_);
+  manager->RegisterBlacklistPathProvider(&provider);
+
+  FilePath bogus_path(test_data_dir_.AppendASCII("does_not_exist_randomness"));
+  ASSERT_FALSE(file_util::PathExists(bogus_path));
+  provider.AddPath(bogus_path);
+
+  const Blacklist* blacklist = manager->GetCompiledBlacklist();
+
+  // We should get an empty, but valid object.
+  ASSERT_TRUE(blacklist);
+  EXPECT_TRUE(blacklist->is_good());
+
+  manager->UnregisterBlacklistPathProvider(&provider);
+}
+
+TEST_F(BlacklistManagerTest, CompiledBlacklistReadError) {
+  FilePath compiled_blacklist_path;
+
+  {
+    scoped_refptr<BlacklistManager> manager(
+        new BlacklistManager(&profile_, NULL));
+
+    TestBlacklistPathProvider provider(&profile_);
+    manager->RegisterBlacklistPathProvider(&provider);
+    provider.AddPath(test_data_dir_.AppendASCII("annoying_ads.pbl"));
+    const Blacklist* blacklist = manager->GetCompiledBlacklist();
+    EXPECT_TRUE(blacklist->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+    manager->UnregisterBlacklistPathProvider(&provider);
+
+    compiled_blacklist_path = manager->compiled_blacklist_path();
+  }
+
+  ASSERT_TRUE(file_util::PathExists(compiled_blacklist_path));
+  ASSERT_TRUE(file_util::Delete(compiled_blacklist_path, false));
+
+  {
+    scoped_refptr<BlacklistManager> manager(
+        new BlacklistManager(&profile_, NULL));
+
+    // Now we don't have any providers, and no compiled blacklist file. We
+    // shouldn't match any URLs.
+    const Blacklist* blacklist = manager->GetCompiledBlacklist();
+    EXPECT_FALSE(blacklist->findMatch(GURL("http://host/annoying_ads/ad.jpg")));
+  }
+}
+
+TEST_F(BlacklistManagerTest, MultipleProviders) {
+  scoped_refptr<BlacklistManager> manager(
+      new BlacklistManager(&profile_, NULL));
+
+  TestBlacklistPathProvider provider1(&profile_);
+  TestBlacklistPathProvider provider2(&profile_);
+  manager->RegisterBlacklistPathProvider(&provider1);
+  manager->RegisterBlacklistPathProvider(&provider2);
+
+  const Blacklist* blacklist1 = manager->GetCompiledBlacklist();
+  EXPECT_FALSE(blacklist1->findMatch(GURL("http://sample/annoying_ads/a.jpg")));
+  EXPECT_FALSE(blacklist1->findMatch(GURL("http://sample/other_ads/a.jpg")));
+  EXPECT_FALSE(blacklist1->findMatch(GURL("http://host/something.doc")));
+
+  provider1.AddPath(test_data_dir_.AppendASCII("annoying_ads.pbl"));
+  const Blacklist* blacklist2 = manager->GetCompiledBlacklist();
+  EXPECT_NE(blacklist1, blacklist2);
+
+  provider2.AddPath(test_data_dir_.AppendASCII("host.pbl"));
+  const Blacklist* blacklist3 = manager->GetCompiledBlacklist();
+  EXPECT_NE(blacklist2, blacklist3);
+
+  EXPECT_TRUE(blacklist3->findMatch(GURL("http://sample/annoying_ads/a.jpg")));
+  EXPECT_FALSE(blacklist3->findMatch(GURL("http://sample/other_ads/a.jpg")));
+  EXPECT_TRUE(blacklist3->findMatch(GURL("http://host/something.doc")));
+
+  provider1.AddPath(test_data_dir_.AppendASCII("other_ads.pbl"));
+
+  const Blacklist* blacklist4 = manager->GetCompiledBlacklist();
+
+  EXPECT_NE(blacklist3, blacklist4);
+  EXPECT_TRUE(blacklist4->findMatch(GURL("http://sample/annoying_ads/a.jpg")));
+  EXPECT_TRUE(blacklist4->findMatch(GURL("http://sample/other_ads/a.jpg")));
+  EXPECT_TRUE(blacklist4->findMatch(GURL("http://host/something.doc")));
+
+  manager->UnregisterBlacklistPathProvider(&provider1);
+  manager->UnregisterBlacklistPathProvider(&provider2);
+}
+
+}  // namespace