Add native-side unit test for Android NetworkChangeNotifier

net/android/network_change_notifier_android_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 "net/android/network_change_notifier_android.h"
+
+#include "base/message_loop.h"
+#include "net/android/network_change_notifier_factory_android.h"
+#include "net/base/network_change_notifier.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace {
+
+class TestConnectionTypeObserver :
+    public NetworkChangeNotifier::ConnectionTypeObserver {
+ public:
+  TestConnectionTypeObserver() :
+      times_connection_type_has_been_changed_(0),
+      current_connection_(NetworkChangeNotifier::CONNECTION_UNKNOWN) {
+  }
+
+  void OnConnectionTypeChanged(
+      NetworkChangeNotifier::ConnectionType type) {
+    times_connection_type_has_been_changed_++;
+    current_connection_ = type;
+  }
+
+  int times_connection_type_has_been_changed() const {
+    return times_connection_type_has_been_changed_;
+  }
+
+  NetworkChangeNotifier::ConnectionType current_connection() const {
+    return current_connection_;
+  }
+
+ private:
+  int times_connection_type_has_been_changed_;
+  NetworkChangeNotifier::ConnectionType current_connection_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestConnectionTypeObserver);
+};
+
+}  // namespace
+
+class NetworkChangeNotifierAndroidTest : public testing::Test {
+ public:
+  NetworkChangeNotifierAndroidTest() : connection_type_observer_(NULL) {
+  }
+
+  void ForceConnectivityState(bool state) {
+    notifier_->ForceConnectivityState(state);
+  }
+
+  const TestConnectionTypeObserver* observer() const {
+    return connection_type_observer_.get();
+  }
+
+ protected:
+  virtual void SetUp() {
+    notifier_.reset(new NetworkChangeNotifierAndroid());
+    connection_type_observer_.reset(new TestConnectionTypeObserver());
+    NetworkChangeNotifier::AddConnectionTypeObserver(
+        connection_type_observer_.get());
+  }
+
+ private:
+  NetworkChangeNotifier::DisableForTest disable_for_test_;
+  scoped_ptr<NetworkChangeNotifierAndroid> notifier_;
+  scoped_ptr<TestConnectionTypeObserver> connection_type_observer_;
+};
+
+
+TEST_F(NetworkChangeNotifierAndroidTest, ObserverNotified) {
+  // This test exercises JNI calls between the native-side
+  // NetworkChangeNotifierAndroid and java-side NetworkChangeNotifier.
+  EXPECT_EQ(0, observer()->times_connection_type_has_been_changed());
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_UNKNOWN,
+      observer()->current_connection());
+
+  ForceConnectivityState(false);
+  MessageLoop::current()->RunAllPending();
+
+  EXPECT_EQ(1, observer()->times_connection_type_has_been_changed());
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_NONE,
+      observer()->current_connection());
+
+  ForceConnectivityState(false);
+  MessageLoop::current()->RunAllPending();
+
+  EXPECT_EQ(1, observer()->times_connection_type_has_been_changed());
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_NONE,
+      observer()->current_connection());
+
+  ForceConnectivityState(true);
+  MessageLoop::current()->RunAllPending();
+
+  EXPECT_EQ(2, observer()->times_connection_type_has_been_changed());
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_UNKNOWN,
+      observer()->current_connection());
+}
+
+}  // namespace net