Blimp OAuth2 token retreival on application start up.

blimp/client/core/session/identity_source_unittest.cc

+// 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 "blimp/client/core/session/identity_source.h"
+
+#include <memory>
+#include <string>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "blimp/client/test/test_blimp_client_context_delegate.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blimp {
+namespace client {
+namespace {
+
+class MockIdentitySource : public IdentitySource {
+ public:
+  explicit MockIdentitySource(BlimpClientContextDelegate* delegate)
+      : IdentitySource(delegate),
+        success_(0),
+        fail_(0),
+        refresh_(0),
+        token_callback_count_(0) {}
+  ~MockIdentitySource() override{};
+
+  void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
+                         const std::string& access_token,
+                         const base::Time& expiration_time) override {
+    IdentitySource::OnGetTokenSuccess(request, access_token, expiration_time);
+    success_++;
+    token_ = access_token;
+  }
+
+  void OnGetTokenFailure(const OAuth2TokenService::Request* request,
+                         const GoogleServiceAuthError& error) override {
+    IdentitySource::OnGetTokenFailure(request, error);
+    fail_++;
+    token_.clear();
+  }
+
+  void OnRefreshTokenAvailable(const std::string& account_id) override {
+    IdentitySource::OnRefreshTokenAvailable(account_id);
+    refresh_++;
+  }
+
+  void MockTokenCall(const std::string& token) {
+    token_callback_count_++;
+    callback_token_ = token;
+  }
+
+  IdentityProvider* GetIdentityProvider() { return identity_provider_.get(); }
+  int Succeeded() { return success_; }
+  int Failed() { return fail_; }
+  int Refreshed() { return refresh_; }
+  int TokenCallbackCount() { return token_callback_count_; }
+  // Return the token passed to TokenCallback.
+  const std::string& CallbackToken() { return callback_token_; }
+  // Return the token get from OAuth2TokenService.
+  const std::string& Token() { return token_; }
+
+ private:
+  std::string token_;
+  int success_;
+  int fail_;
+  int refresh_;
+
+  int token_callback_count_;
+  std::string callback_token_;
+  DISALLOW_COPY_AND_ASSIGN(MockIdentitySource);
+};
+
+class IdentitySourceTest : public testing::Test {
+ public:
+  IdentitySourceTest() = default;
+  ~IdentitySourceTest() override = default;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(IdentitySourceTest);
+};
+
+TEST_F(IdentitySourceTest, TestConnect) {
+  TestBlimpClientContextDelegate mock_blimp_delegate;
+  MockIdentitySource auth(&mock_blimp_delegate);
+  auth.SetTokenCallback(
+      base::Bind(&MockIdentitySource::MockTokenCall, base::Unretained(&auth)));
+  FakeIdentityProvider* id_provider =
+      static_cast<FakeIdentityProvider*>(auth.GetIdentityProvider());
+  FakeOAuth2TokenService* token_service = mock_blimp_delegate.GetTokenService();
+
+  // Connect when user is not signed in. Nothing happens.
+  id_provider->LogOut();
+  auth.Connect();
+  DCHECK_EQ(auth.Succeeded(), 0);
+  DCHECK_EQ(auth.Failed(), 0);
+  DCHECK_EQ(auth.Refreshed(), 0);
+  DCHECK_EQ(auth.Token(), std::string());
+
+  FakeOAuth2TokenServiceDelegate* mock_token_service_delegate =
+      token_service->GetFakeOAuth2TokenServiceDelegate();
+
+  // Connect when user signed in, but no refresh token, refresh token observer
+  // should be added.
+  std::string account = "mock_account";
+  id_provider->LogIn(account);
+  mock_token_service_delegate->RevokeCredentials(account);
+  // Mock duplicate connect calls in this test.
+  auth.Connect();
+  auth.Connect();
+  DCHECK_EQ(auth.Succeeded(), 0);
+  DCHECK_EQ(auth.Failed(), 0);
+  DCHECK_EQ(auth.Refreshed(), 0);
+  DCHECK_EQ(auth.TokenCallbackCount(), 0);
+
+  // Issue refresh token, listener should be triggered, and request should be
+  // sent.
+  mock_token_service_delegate->UpdateCredentials(account, "mock_refresh_token");
+  DCHECK_EQ(auth.Succeeded(), 0);

[David Trainor- moved to gerrit, 2016/08/18 17:27:06]

Can we add a way to reset the counts so it's easier to list exact expectations
for each subtest here?

[xingliu, 2016/08/18 18:29:22]

Done.

+  DCHECK_EQ(auth.Failed(), 0);
+  DCHECK_EQ(auth.Refreshed(), 1);
+  DCHECK_EQ(auth.TokenCallbackCount(), 0);
+
+  // Fire access token success, first request should be fulfilled.
+  base::Time time;
+  std::string mock_access_token = "mock_access_token";
+  token_service->IssueAllTokensForAccount(account, mock_access_token, time);
+  DCHECK_EQ(auth.Succeeded(), 1);
+  DCHECK_EQ(auth.Failed(), 0);
+  DCHECK_EQ(auth.Token(), mock_access_token);
+  DCHECK_EQ(auth.TokenCallbackCount(), 1);
+  DCHECK_EQ(auth.CallbackToken(), mock_access_token);
+
+  // Connect again and fire access token failed.
+  GoogleServiceAuthError error(GoogleServiceAuthError::State::REQUEST_CANCELED);
+  auth.Connect();
+  auth.Connect();
+  token_service->IssueErrorForAllPendingRequestsForAccount(account, error);
+  DCHECK_EQ(auth.Succeeded(), 1);
+  DCHECK_EQ(auth.Failed(), 1);
+  DCHECK_EQ(auth.Token(), std::string());
+  DCHECK_EQ(auth.TokenCallbackCount(), 1);
+
+  // Refresh token listener should have been removed.
+  mock_token_service_delegate->UpdateCredentials(account, "mock_refresh_token");
+  DCHECK_EQ(auth.Refreshed(), 1);
+
+  // Direct connect with refresh token, and no listener should be
+  // added.
+  auth.Connect();
+  auth.Connect();
+  token_service->IssueAllTokensForAccount(account, mock_access_token, time);
+  DCHECK_EQ(auth.Succeeded(), 2);
+  DCHECK_EQ(auth.Token(), mock_access_token);
+  mock_token_service_delegate->UpdateCredentials(account, "mock_refresh_token");
+  DCHECK_EQ(auth.Refreshed(), 1);
+  DCHECK_EQ(auth.TokenCallbackCount(), 2);
+  DCHECK_EQ(auth.CallbackToken(), mock_access_token);
+}
+
+}  // namespace
+}  // namespace client
+}  // namespace blimp