Refactor FileBasedPolicyProvider, introduce AsynchronousPolicyProvider.

chrome/browser/policy/asynchronous_policy_test_base.h

+// Copyright (c) 2010 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.
+
+#ifndef CHROME_BROWSER_POLICY_ASYNCHRONOUS_POLICY_TEST_BASE_H_
+#define CHROME_BROWSER_POLICY_ASYNCHRONOUS_POLICY_TEST_BASE_H_
+#pragma once
+
+#include "base/message_loop.h"
+#include "base/time.h"
+#include "chrome/browser/browser_thread.h"
+#include "chrome/browser/policy/asynchronous_policy_provider.h"
+#include "chrome/browser/policy/configuration_policy_provider.h"
+#include "chrome/browser/policy/mock_configuration_policy_store.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace policy {
+
+// A delegate for testing that can feed arbitrary information to the loader.
+class ProviderDelegateMock : public AsynchronousPolicyProvider::Delegate {
+ public:
+  ProviderDelegateMock() : AsynchronousPolicyProvider::Delegate() {}
+  virtual ~ProviderDelegateMock() {}
+
+  MOCK_METHOD1(Init, void(AsynchronousPolicyProvider::PolicyChangeObserver*));
+  MOCK_METHOD0(Stop, void());
+  MOCK_METHOD0(Load, DictionaryValue*());
+  MOCK_METHOD2(IsSafeToReloadPolicy, bool(const base::Time&, base::TimeDelta*));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ProviderDelegateMock);
+};
+
+class AsynchronousPolicyTestBase : public testing::Test {
+ public:
+  AsynchronousPolicyTestBase()
+      : run_pending_during_tear_down_(true),
+        ui_thread_(BrowserThread::UI, &loop_),
+        file_thread_(BrowserThread::FILE, &loop_) {}
+
+  virtual ~AsynchronousPolicyTestBase() {}
+
+  virtual void SetUp() {
+    delegate_.reset(new ProviderDelegateMock());
+    store_.reset(new MockConfigurationPolicyStore);
+  }
+
+  virtual void TearDown() {
+    provider_.reset(NULL);
+    if (run_pending_during_tear_down_)
+      loop_.RunAllPending();
+  }
+
+  void DontRunAllPendingDuringTearDown() {
+    run_pending_during_tear_down_ = false;
+  }
+
+ protected:
+  MessageLoop loop_;
+  scoped_ptr<ConfigurationPolicyProvider> provider_;
+
+  // The mocks that are used in the test must outlive the scope of the test
+  // because they still get accessed in the RunAllPending of the TearDown.
+  scoped_ptr<MockConfigurationPolicyStore> store_;
+  scoped_ptr<ProviderDelegateMock> delegate_;
+
+ private:
+  // True if a test guarantees that it's handled all tasks pending in the
+  // message loop and doesn't want RunAllPending run during TearDown.
+  bool run_pending_during_tear_down_;
+  BrowserThread ui_thread_;
+  BrowserThread file_thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(AsynchronousPolicyTestBase);
+};
+
+inline static void MessageLoopQuitNow() {
+  MessageLoop::current()->QuitNow();
+}
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_ASYNCHRONOUS_POLICY_TEST_BASE_H_