Improve error messaging of webRequest API in case of conflicts

chrome/browser/extensions/extension_warning_service_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/extensions/extension_warning_service.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/global_error/global_error_service.h"
+#include "chrome/browser/ui/global_error/global_error_service_factory.h"
+#include "chrome/test/base/testing_profile.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace extensions {
+
+namespace {
+
+class TestExtensionWarningService : public ExtensionWarningService {
+ public:
+  explicit TestExtensionWarningService(Profile* profile)
+      : ExtensionWarningService(profile) {
+  }
+  virtual ~TestExtensionWarningService() {}
+
+  void AddWarning(const ExtensionWarning& warning) {
+    ExtensionWarningSet warnings;
+    warnings.insert(warning);
+    AddWarnings(warnings);
+  }
+};
+
+class MockObserver : public ExtensionWarningService::Observer {
+ public:
+  virtual ~MockObserver() {}
+  MOCK_METHOD0(ExtensionWarningsChanged, void());
+};
+
+const char* ext1_id = "extension1";
+const char* ext2_id = "extension2";
+const ExtensionWarning::WarningType warning_1 =
+    ExtensionWarning::kNetworkDelay;
+const ExtensionWarning::WarningType warning_2 =
+    ExtensionWarning::kNetworkConflict;
+
+}  // namespace
+
+// Check that inserting a warning triggers notifications, whereas inserting
+// the same warning again is silent.
+TEST(ExtensionWarningServiceTest, SetWarning) {
+  TestingProfile profile;
+  TestExtensionWarningService warning_service(&profile);
+  MockObserver observer;
+  warning_service.AddObserver(&observer);
+
+  // Insert warning for the first time.
+  EXPECT_CALL(observer, ExtensionWarningsChanged());
+  warning_service.AddWarning(
+      ExtensionWarning::CreateNetworkDelayWarning(ext1_id));
+  testing::Mock::VerifyAndClearExpectations(&warning_service);
+
+  // Second insertion of same warning does not trigger anything.
+  warning_service.AddWarning(
+      ExtensionWarning::CreateNetworkDelayWarning(ext1_id));
+  testing::Mock::VerifyAndClearExpectations(&warning_service);
+
+  warning_service.RemoveObserver(&observer);
+}
+
+// Check that ClearWarnings deletes exactly the specified warnings and
+// triggers notifications where appropriate.
+TEST(ExtensionWarningServiceTest, ClearWarnings) {
+  TestingProfile profile;
+  TestExtensionWarningService warning_service(&profile);
+  MockObserver observer;
+  warning_service.AddObserver(&observer);
+
+  // Insert two unique warnings in one batch.
+  EXPECT_CALL(observer, ExtensionWarningsChanged());
+  ExtensionWarningSet warning_set;
+  warning_set.insert(ExtensionWarning::CreateNetworkDelayWarning(ext1_id));
+  warning_set.insert(ExtensionWarning::CreateNetworkConflictWarning(ext2_id));
+  warning_service.AddWarnings(warning_set);
+  testing::Mock::VerifyAndClearExpectations(&warning_service);
+
+  // Remove one warning and check that the badge remains.
+  EXPECT_CALL(observer, ExtensionWarningsChanged());
+  std::set<ExtensionWarning::WarningType> to_clear;
+  to_clear.insert(warning_2);
+  warning_service.ClearWarnings(to_clear);
+  testing::Mock::VerifyAndClearExpectations(&warning_service);
+
+  // Check that the correct warnings appear in |warnings|.
+  std::set<ExtensionWarning::WarningType> existing_warnings =
+      warning_service.GetWarningTypesAffectingExtension(ext1_id);
+  EXPECT_EQ(1u, existing_warnings.size());
+  existing_warnings =
+      warning_service.GetWarningTypesAffectingExtension(ext2_id);
+  EXPECT_EQ(0u, existing_warnings.size());
+
+  // Remove the other one warning.
+  EXPECT_CALL(observer, ExtensionWarningsChanged());
+  to_clear.insert(warning_1);
+  warning_service.ClearWarnings(to_clear);
+  testing::Mock::VerifyAndClearExpectations(&warning_service);
+
+  // Check that not warnings remain.
+  existing_warnings =
+      warning_service.GetWarningTypesAffectingExtension(ext1_id);
+  EXPECT_EQ(0u, existing_warnings.size());
+  existing_warnings =
+      warning_service.GetWarningTypesAffectingExtension(ext2_id);
+  EXPECT_EQ(0u, existing_warnings.size());
+
+  warning_service.RemoveObserver(&observer);
+}
+
+}  // namespace extensions