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// Copyright 2013 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 "extensions/browser/event_router.h"
#include <string>
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "extensions/browser/event_listener_map.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace extensions {
namespace {
// A simple mock to keep track of listener additions and removals.
class MockEventRouterObserver : public EventRouter::Observer {
public:
MockEventRouterObserver()
: listener_added_count_(0),
listener_removed_count_(0) {}
virtual ~MockEventRouterObserver() {}
int listener_added_count() const { return listener_added_count_; }
int listener_removed_count() const { return listener_removed_count_; }
const std::string& last_event_name() const { return last_event_name_; }
void Reset() {
listener_added_count_ = 0;
listener_removed_count_ = 0;
last_event_name_.clear();
}
// EventRouter::Observer overrides:
virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE {
listener_added_count_++;
last_event_name_ = details.event_name;
}
virtual void OnListenerRemoved(const EventListenerInfo& details) OVERRIDE {
listener_removed_count_++;
last_event_name_ = details.event_name;
}
private:
int listener_added_count_;
int listener_removed_count_;
std::string last_event_name_;
DISALLOW_COPY_AND_ASSIGN(MockEventRouterObserver);
};
} // namespace
typedef testing::Test EventRouterTest;
TEST_F(EventRouterTest, GetBaseEventName) {
// Normal event names are passed through unchanged.
EXPECT_EQ("foo.onBar", EventRouter::GetBaseEventName("foo.onBar"));
// Sub-events are converted to the part before the slash.
EXPECT_EQ("foo.onBar", EventRouter::GetBaseEventName("foo.onBar/123"));
}
// Tests adding and removing observers from EventRouter.
TEST_F(EventRouterTest, EventRouterObserver) {
EventRouter router(NULL, NULL);
EventListener listener(
"event_name", "extension_id", NULL, scoped_ptr<base::DictionaryValue>());
// Add/remove works without any observers.
router.OnListenerAdded(&listener);
router.OnListenerRemoved(&listener);
// Register observers that both match and don't match the event above.
MockEventRouterObserver matching_observer;
router.RegisterObserver(&matching_observer, "event_name");
MockEventRouterObserver non_matching_observer;
router.RegisterObserver(&non_matching_observer, "other");
// Adding a listener notifies the appropriate observers.
router.OnListenerAdded(&listener);
EXPECT_EQ(1, matching_observer.listener_added_count());
EXPECT_EQ(0, non_matching_observer.listener_added_count());
// Removing a listener notifies the appropriate observers.
router.OnListenerRemoved(&listener);
EXPECT_EQ(1, matching_observer.listener_removed_count());
EXPECT_EQ(0, non_matching_observer.listener_removed_count());
// Adding the listener again notifies again.
router.OnListenerAdded(&listener);
EXPECT_EQ(2, matching_observer.listener_added_count());
EXPECT_EQ(0, non_matching_observer.listener_added_count());
// Removing the listener again notifies again.
router.OnListenerRemoved(&listener);
EXPECT_EQ(2, matching_observer.listener_removed_count());
EXPECT_EQ(0, non_matching_observer.listener_removed_count());
// Adding a listener with a sub-event notifies the main observer with
// proper details.
matching_observer.Reset();
EventListener sub_event_listener("event_name/1",
"extension_id",
NULL,
scoped_ptr<base::DictionaryValue>());
router.OnListenerAdded(&sub_event_listener);
EXPECT_EQ(1, matching_observer.listener_added_count());
EXPECT_EQ(0, matching_observer.listener_removed_count());
EXPECT_EQ("event_name/1", matching_observer.last_event_name());
// Ditto for removing the listener.
matching_observer.Reset();
router.OnListenerRemoved(&sub_event_listener);
EXPECT_EQ(0, matching_observer.listener_added_count());
EXPECT_EQ(1, matching_observer.listener_removed_count());
EXPECT_EQ("event_name/1", matching_observer.last_event_name());
}
} // namespace extensions
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