Reland: chromeos: Convert ash VPNDelegate interface to mojo

ash/common/system/chromeos/network/vpn_list_unittest.cc

Index: ash/common/system/chromeos/network/vpn_list_unittest.cc
diff --git a/ash/common/system/chromeos/network/vpn_list_unittest.cc b/ash/common/system/chromeos/network/vpn_list_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1da37228b64e5021623b7748e2831767f1170b13
--- /dev/null
+++ b/ash/common/system/chromeos/network/vpn_list_unittest.cc
@@ -0,0 +1,99 @@
+// Copyright 2016 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 "ash/common/system/chromeos/network/vpn_list.h"
+
+#include <algorithm>
+#include <vector>
+
+#include "ash/public/interfaces/vpn_list.mojom.h"
+#include "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ash::mojom::ThirdPartyVpnProvider;
+using ash::mojom::ThirdPartyVpnProviderPtr;
+
+namespace ash {
+
+namespace {
+
+class TestVpnListObserver : public VpnList::Observer {
+ public:
+  TestVpnListObserver() {}
+  ~TestVpnListObserver() override {}
+
+  // VpnList::Observer:
+  void OnVPNProvidersChanged() override { change_count_++; }
+
+  int change_count_ = 0;
+};
+
+}  // namespace
+
+using VpnListTest = testing::Test;
+
+TEST_F(VpnListTest, BuiltInProvider) {
+  VpnList vpn_list;
+
+  // The VPN list should only contain the built-in provider.
+  ASSERT_EQ(1u, vpn_list.vpn_providers().size());
+  VPNProvider provider = vpn_list.vpn_providers()[0];
+  EXPECT_FALSE(provider.third_party);
+  EXPECT_TRUE(provider.extension_id.empty());
+}
+
+TEST_F(VpnListTest, ThirdPartyProviders) {
+  VpnList vpn_list;
+
+  // The VPN list should only contain the built-in provider.
+  EXPECT_EQ(1u, vpn_list.vpn_providers().size());
+
+  // Add some third party (extension-backed) providers.
+  std::vector<ThirdPartyVpnProviderPtr> third_party_providers;
+  ThirdPartyVpnProviderPtr third_party1 = ThirdPartyVpnProvider::New();
+  third_party1->name = "name1";
+  third_party1->extension_id = "extension_id1";
+  third_party_providers.push_back(std::move(third_party1));
+
+  ThirdPartyVpnProviderPtr third_party2 = ThirdPartyVpnProvider::New();
+  third_party2->name = "name2";
+  third_party2->extension_id = "extension_id2";
+  third_party_providers.push_back(std::move(third_party2));
+
+  vpn_list.SetThirdPartyVpnProviders(std::move(third_party_providers));
+
+  // Mojo types will be converted to internal ash types.
+  VPNProvider provider1("extension_id1", "name1");
+  VPNProvider provider2("extension_id2", "name2");
+
+  // List contains the extension-backed providers. Order doesn't matter.
+  std::vector<VPNProvider> providers = vpn_list.vpn_providers();
+  EXPECT_EQ(3u, providers.size());
+  EXPECT_EQ(1u, std::count(providers.begin(), providers.end(), provider1));
+  EXPECT_EQ(1u, std::count(providers.begin(), providers.end(), provider2));
+}
+
+TEST_F(VpnListTest, Observers) {
+  VpnList vpn_list;
+
+  // Observers are not notified when they are added.
+  TestVpnListObserver observer;
+  vpn_list.AddObserver(&observer);
+  EXPECT_EQ(0, observer.change_count_);
+
+  // Add a third party (extension-backed) provider.
+  std::vector<ThirdPartyVpnProviderPtr> third_party_providers;
+  ThirdPartyVpnProviderPtr third_party1 = ThirdPartyVpnProvider::New();
+  third_party1->name = "name1";
+  third_party1->extension_id = "extension_id1";
+  third_party_providers.push_back(std::move(third_party1));
+  vpn_list.SetThirdPartyVpnProviders(std::move(third_party_providers));
+
+  // Observer was notified.
+  EXPECT_EQ(1, observer.change_count_);
+
+  vpn_list.RemoveObserver(&observer);
+}
+
+}  // namespace ash