Introduce the NotificationIdGenerator in //content.

content/browser/notifications/notification_id_generator_unittest.cc

+// Copyright 2015 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 "base/strings/string_number_conversions.h"
+#include "content/browser/notifications/notification_id_generator.h"
+#include "content/public/test/test_browser_context.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace content {
+namespace {
+
+class TestBrowserContextConfigurableIncognito : public TestBrowserContext {
+ public:
+  TestBrowserContextConfigurableIncognito() {}
+  ~TestBrowserContextConfigurableIncognito() override {}
+
+  void set_incognito(bool incognito) { incognito_ = incognito; }
+
+  // TestBrowserContext implementation.
+  bool IsOffTheRecord() const override { return incognito_; }
+
+ private:
+  bool incognito_ = false;
+
+  DISALLOW_COPY_AND_ASSIGN(TestBrowserContextConfigurableIncognito);
+};
+
+}  // namespace
+
+const int kRenderProcessId = 42;
+const int64_t kPersistentNotificationId = 430;
+const int kNonPersistentNotificationId = 5400;
+
+const char kExampleTag[] = "example";
+const char kDifferentTag[] = "different";
+
+TEST(NotificationIdGeneratorTest, PersistentNotifications) {
+  TestBrowserContextConfigurableIncognito browser_context;
+  TestBrowserContext second_browser_context;
+
+  NotificationIdGenerator generator(&browser_context, kRenderProcessId);
+
+  NotificationIdGenerator different_browser_context_generator(
+      &second_browser_context, kRenderProcessId);
+  NotificationIdGenerator different_render_process_generator(
+      &browser_context, kRenderProcessId + 1);
+
+  GURL origin("https://example.com");
+  GURL different_origin("https://example.com:81");
+
+  // Notification ids are unique for persistent notifications given a browser
+  // context, incognito state, origin and either the tag when non-empty, or the
+  // persistent notification id when the tag is empty. The render process id
+  // does not matter, as the persistent notification ids are owned by the
+  // browser process orthogonal to the renderer that created the notification.
+
+  // Uniqueness of notification ids will be impacted by the browser context.
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId),
+      different_browser_context_generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId));
+
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId),
+      different_browser_context_generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId));
+
+  // Uniqueness of notification ids will be impacted by the fact whether the
+  // browser context is in Incognito mode.
+  EXPECT_FALSE(browser_context.IsOffTheRecord());
+  std::string normal_notification_id =
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId);
+
+  browser_context.set_incognito(true);
+
+  EXPECT_TRUE(browser_context.IsOffTheRecord());
+  std::string incognito_notification_id =
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId);
+
+  EXPECT_NE(normal_notification_id, incognito_notification_id);
+
+  browser_context.set_incognito(false);
+
+  // Uniqueness of notification ids does not depend on render process id that is
+  // creating the notification for persistent notifications.
+  EXPECT_EQ(
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId),
+      different_render_process_generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId));
+
+  EXPECT_EQ(
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId),
+      different_render_process_generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId));
+
+  // The origin of the notification will impact the generated notification id.
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          different_origin, kExampleTag, kPersistentNotificationId));
+
+  // The tag, when empty, will impact the generated notification id.
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          origin, kDifferentTag, kPersistentNotificationId));
+
+  // The persistent notification id will impact the generated notification id
+  // when the given tag is empty.
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId + 1));
+
+  // Using a numeric tag that could resemble a persistent notification id should
+  // not be equal to a notification without a tag, but with that id.
+  EXPECT_NE(
+      generator.GenerateForPersistentNotification(
+          origin,
+          base::IntToString(kPersistentNotificationId),
+          kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId));
+
+  // Two notification ids given exactly the same information should be equal.
+  EXPECT_EQ(
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          origin, kExampleTag, kPersistentNotificationId));
+
+  EXPECT_EQ(
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId),
+      generator.GenerateForPersistentNotification(
+          origin, "" /* tag */, kPersistentNotificationId));
+}
+
+TEST(NotificationIdGeneratorTest, NonPersistentNotifications) {
+  TestBrowserContextConfigurableIncognito browser_context;
+  TestBrowserContext second_browser_context;
+
+  NotificationIdGenerator generator(&browser_context, kRenderProcessId);
+
+  NotificationIdGenerator different_browser_context_generator(
+      &second_browser_context, kRenderProcessId);
+  NotificationIdGenerator different_render_process_generator(
+      &browser_context, kRenderProcessId + 1);
+
+  GURL origin("https://example.com");
+  GURL different_origin("https://example.com:81");
+
+  // Notification ids are unique for non-persistent notifications given a
+  // browser context, incognito state, origin, render process id and either the
+  // tag when non-empty, or the non-persistent notification id when it is empty.
+
+  // Uniqueness of notification ids will be impacted by the browser context.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId),
+      different_browser_context_generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId));
+
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId),
+      different_browser_context_generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId));
+
+  // Uniqueness of notification ids will be impacted by the fact whether the
+  // browser context is in Incognito mode.
+  EXPECT_FALSE(browser_context.IsOffTheRecord());
+  std::string normal_notification_id =
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId);
+
+  browser_context.set_incognito(true);
+
+  EXPECT_TRUE(browser_context.IsOffTheRecord());
+  std::string incognito_notification_id =
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId);
+
+  EXPECT_NE(normal_notification_id, incognito_notification_id);
+
+  browser_context.set_incognito(false);
+
+  // Uniqueness of notification ids does depend on render process id, as each
+  // of the render processes will generate their own incrementing id.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId),
+      different_render_process_generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId));
+
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId),
+      different_render_process_generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId));
+
+  // The origin of the notification will impact the generated notification id.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          different_origin, kExampleTag, kNonPersistentNotificationId));
+
+  // The tag, when empty, will impact the generated notification id.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          origin, kDifferentTag, kNonPersistentNotificationId));
+
+  // The non-persistent notification id will impact the generated notification
+  // id when the given tag is empty.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId + 1));
+
+  // Using a numeric tag that could resemble a non-persistent notification id
+  // should not be equal to a notification without a tag, but with that id.
+  EXPECT_NE(
+      generator.GenerateForNonPersistentNotification(
+          origin,
+          base::IntToString(kNonPersistentNotificationId),
+          kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId));
+
+  // Two notification ids given exactly the same information should be equal.
+  EXPECT_EQ(
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          origin, kExampleTag, kNonPersistentNotificationId));
+
+  EXPECT_EQ(
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId),
+      generator.GenerateForNonPersistentNotification(
+          origin, "" /* tag */, kNonPersistentNotificationId));
+}
+
+}  // namespace content