Cache force-installed apps/extensions in device-local accounts

chrome/browser/chromeos/extensions/device_local_account_external_policy_loader_unittest.cc

+// 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 "chrome/browser/chromeos/extensions/device_local_account_external_policy_loader.h"
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/message_loop/message_loop.h"
+#include "base/message_loop/message_loop_proxy.h"
+#include "base/path_service.h"
+#include "base/run_loop.h"
+#include "base/strings/stringprintf.h"
+#include "base/values.h"
+#include "base/version.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/external_provider_impl.h"
+#include "chrome/browser/extensions/external_provider_interface.h"
+#include "chrome/browser/extensions/updater/extension_downloader.h"
+#include "chrome/browser/policy/cloud/mock_cloud_policy_store.h"
+#include "chrome/browser/policy/policy_map.h"
+#include "chrome/browser/policy/policy_types.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_source.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_utils.h"
+#include "extensions/common/manifest.h"
+#include "net/url_request/test_url_fetcher_factory.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "net/url_request/url_request_context_getter.h"
+#include "net/url_request/url_request_test_util.h"
+#include "policy/policy_constants.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+using ::testing::InvokeWithoutArgs;
+using ::testing::Mock;
+using ::testing::_;
+
+namespace chromeos {
+
+namespace {
+
+const char kCacheDir[] = "cache";
+const char kExtensionId[] = "ldnnhddmnhbkjipkidpdiheffobcpfmf";
+const char kExtensionUpdateManifest[] =
+    "extensions/good_v1_update_manifest.xml";
+const char kExtensionCRXSourceDir[] = "extensions";
+const char kExtensionCRXFile[] = "good.crx";
+const char kExtensionCRXVersion[] = "1.0.0.0";
+
+class MockExternalPolicyProviderVisitor
+    : public extensions::ExternalProviderInterface::VisitorInterface {
+ public:
+  MockExternalPolicyProviderVisitor();
+  virtual ~MockExternalPolicyProviderVisitor();
+
+  MOCK_METHOD6(OnExternalExtensionFileFound,
+               bool(const std::string&,
+                    const base::Version*,
+                    const base::FilePath&,
+                    extensions::Manifest::Location,
+                    int,
+                    bool));
+  MOCK_METHOD5(OnExternalExtensionUpdateUrlFound,
+               bool(const std::string&,
+                    const GURL&,
+                    extensions::Manifest::Location,
+                    int,
+                    bool));
+  MOCK_METHOD1(OnExternalProviderReady,
+               void(const extensions::ExternalProviderInterface* provider));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockExternalPolicyProviderVisitor);
+};
+
+MockExternalPolicyProviderVisitor::MockExternalPolicyProviderVisitor() {
+}
+
+MockExternalPolicyProviderVisitor::~MockExternalPolicyProviderVisitor() {
+}
+
+}  // namespace
+
+class DeviceLocalAccountExternalPolicyLoaderTest : public testing::Test {
+ protected:
+  DeviceLocalAccountExternalPolicyLoaderTest();
+  virtual ~DeviceLocalAccountExternalPolicyLoaderTest();
+
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+  void VerifyAndResetVisitorCallExpectations();
+  void SetForceInstallListPolicy();
+
+  content::TestBrowserThreadBundle thread_bundle_;

[Joao da Silva, 2013/10/17 14:57:54]

This probably won't be necessary if you just have a loop and pass its proxy as
the background_task_runner

[bartfab (slow), 2013/10/18 12:58:39]

DeviceLocalAccountExternalPolicyLoader inherits from extensions::ExternalLoader
and that class CHECK()s whether it is running on the correct browser thread.
Hence, a thread bundle is required.

+  base::ScopedTempDir temp_dir_;
+  base::FilePath cache_dir_;

[Joao da Silva, 2013/10/17 14:57:54]

#include

[bartfab (slow), 2013/10/18 12:58:39]

Already included by device_local_account_external_policy_loader.h.

+  policy::MockCloudPolicyStore store_;
+  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
+  base::FilePath test_dir_;
+
+  scoped_refptr<DeviceLocalAccountExternalPolicyLoader> loader_;
+  MockExternalPolicyProviderVisitor visitor_;
+  scoped_ptr<extensions::ExternalProviderImpl> provider_;
+};
+
+DeviceLocalAccountExternalPolicyLoaderTest::
+    DeviceLocalAccountExternalPolicyLoaderTest()
+    : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
+  ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+  cache_dir_ = temp_dir_.path().Append(kCacheDir);
+  ASSERT_TRUE(file_util::CreateDirectoryAndGetError(cache_dir_, NULL));
+}
+
+DeviceLocalAccountExternalPolicyLoaderTest::
+    ~DeviceLocalAccountExternalPolicyLoaderTest() {
+}
+
+void DeviceLocalAccountExternalPolicyLoaderTest::SetUp() {
+  request_context_getter_ =
+      new net::TestURLRequestContextGetter(base::MessageLoopProxy::current());
+  TestingBrowserProcess::GetGlobal()->SetSystemRequestContext(
+      request_context_getter_.get());
+  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_dir_));
+
+  loader_ = new DeviceLocalAccountExternalPolicyLoader(&store_, cache_dir_);
+  provider_.reset(new extensions::ExternalProviderImpl(
+      &visitor_,
+      loader_,
+      NULL,
+      extensions::Manifest::EXTERNAL_POLICY,
+      extensions::Manifest::EXTERNAL_POLICY_DOWNLOAD,
+      extensions::Extension::NO_FLAGS));
+
+  content::RenderProcessHost::SetRunRendererInProcess(true);

[Joao da Silva, 2013/10/17 14:57:54]

Why?

[Joao da Silva, 2013/10/17 14:57:54]

Why?

[bartfab (slow), 2013/10/18 12:58:39]

Without this, the extension system would try to unpack CRX files in a sandboxed
child process but the unit test is not allowed to launch such a processs.

+
+  VerifyAndResetVisitorCallExpectations();
+}
+
+void DeviceLocalAccountExternalPolicyLoaderTest::TearDown() {
+  content::RenderProcessHost::SetRunRendererInProcess(false);
+  TestingBrowserProcess::GetGlobal()->SetSystemRequestContext(NULL);
+}
+
+void DeviceLocalAccountExternalPolicyLoaderTest::
+    VerifyAndResetVisitorCallExpectations() {
+  Mock::VerifyAndClearExpectations(&visitor_);
+  EXPECT_CALL(visitor_, OnExternalExtensionFileFound(_, _, _, _, _, _))
+      .Times(0);
+  EXPECT_CALL(visitor_, OnExternalExtensionUpdateUrlFound(_, _, _, _, _))
+      .Times(0);
+  EXPECT_CALL(visitor_, OnExternalProviderReady(_))
+      .Times(0);
+}
+
+void DeviceLocalAccountExternalPolicyLoaderTest::SetForceInstallListPolicy() {
+  scoped_ptr<base::ListValue> forcelist(new base::ListValue);
+  forcelist->AppendString("invalid");
+  forcelist->AppendString(base::StringPrintf(
+      "%s;%s",
+      kExtensionId,
+      extension_urls::GetWebstoreUpdateUrl().spec().c_str()));
+  store_.policy_map_.Set(policy::key::kExtensionInstallForcelist,
+                         policy::POLICY_LEVEL_MANDATORY,
+                         policy::POLICY_SCOPE_USER,
+                         forcelist.release(),
+                         NULL);
+  store_.NotifyStoreLoaded();
+}
+
+// Verifies that when the cache is not explicitly started, the loader does not
+// serve any extensions, even if the force-install list policy is set or a load
+// is manually requested.
+TEST_F(DeviceLocalAccountExternalPolicyLoaderTest, CacheNotStarted) {
+  // Set the force-install list policy.
+  SetForceInstallListPolicy();
+
+  // Manually request a load.
+  loader_->StartLoading();
+
+  EXPECT_FALSE(loader_->IsCacheRunning());
+  EXPECT_TRUE(base::MessageLoop::current()->IsIdleForTesting());
+}
+
+// Verifies that the cache can be started and stopped correctly.
+TEST_F(DeviceLocalAccountExternalPolicyLoaderTest, ForceInstallListEmpty) {
+  // Set an empty force-install list policy.
+  store_.NotifyStoreLoaded();
+
+  // Start the cache. Verify that the loader announces an empty extension list.
+  EXPECT_CALL(visitor_, OnExternalProviderReady(provider_.get()))
+      .Times(1);
+  loader_->StartCache(base::MessageLoopProxy::current());
+  VerifyAndResetVisitorCallExpectations();
+
+  // Stop the cache. Verify that the loader announces an empty extension list.
+  EXPECT_CALL(visitor_, OnExternalProviderReady(provider_.get()))
+      .Times(1);
+  base::RunLoop run_loop;
+  loader_->StopCache(run_loop.QuitClosure());
+  VerifyAndResetVisitorCallExpectations();
+
+  // Spin the loop until the cache shutdown callback is invoked. Verify that at
+  // that point, no further file I/O tasks are pending.
+  run_loop.Run();
+  EXPECT_TRUE(base::MessageLoop::current()->IsIdleForTesting());
+}
+
+// Verifies that when a force-install list policy referencing an extension is
+// set and the cache is started, the loader downloads, caches and serves the
+// extension.
+TEST_F(DeviceLocalAccountExternalPolicyLoaderTest, ForceInstallListSet) {
+  // Set a force-install list policy that contains an invalid entry (which
+  // should be ignored) and a valid reference to an extension.
+  SetForceInstallListPolicy();
+
+  // Start the cache.
+  loader_->StartCache(base::MessageLoopProxy::current());
+
+  // Spin the loop, allowing the loader to process the force-install list.
+  // Verify that the loader announces an empty extension list.
+  net::TestURLFetcherFactory factory;
+  EXPECT_CALL(visitor_, OnExternalProviderReady(provider_.get()))
+      .Times(1);
+  base::MessageLoop::current()->RunUntilIdle();
+
+  // Verify that a downloader has started and is attempting to download an
+  // update manifest.
+  net::TestURLFetcher* fetcher = factory.GetFetcherByID(
+      extensions::ExtensionDownloader::kManifestFetcherId);
+  ASSERT_TRUE(fetcher);
+  ASSERT_TRUE(fetcher->delegate());
+
+  // Return a manifest to the downloader.
+  std::string manifest;
+  EXPECT_TRUE(base::ReadFileToString(test_dir_.Append(kExtensionUpdateManifest),
+                                     &manifest));
+  fetcher->set_response_code(200);
+  fetcher->SetResponseString(manifest);
+  fetcher->delegate()->OnURLFetchComplete(fetcher);
+
+  // Wait for the manifest to be parsed.
+  content::WindowedNotificationObserver(
+      chrome::NOTIFICATION_EXTENSION_UPDATE_FOUND,
+      content::NotificationService::AllSources()).Wait();
+
+  // Verify that the downloader is attempting to download a CRX file.
+  fetcher = factory.GetFetcherByID(
+      extensions::ExtensionDownloader::kExtensionFetcherId);
+  ASSERT_TRUE(fetcher);
+  ASSERT_TRUE(fetcher->delegate());
+
+  // Create a temporary CRX file and return its path to the downloader.
+  EXPECT_TRUE(base::CopyFile(
+      test_dir_.Append(kExtensionCRXSourceDir).Append(kExtensionCRXFile),
+      temp_dir_.path().Append(kExtensionCRXFile)));
+  fetcher->set_response_code(200);
+  fetcher->SetResponseFilePath(temp_dir_.path().Append(kExtensionCRXFile));
+  fetcher->delegate()->OnURLFetchComplete(fetcher);
+
+  // Spin the loop. Verify that the loader announces the presence of a new CRX
+  // file, served from the cache directory.
+  const base::FilePath cached_crx_path = cache_dir_.Append(base::StringPrintf(
+      "%s-%s.crx", kExtensionId, kExtensionCRXVersion));
+  base::RunLoop cache_run_loop;
+  EXPECT_CALL(visitor_, OnExternalExtensionFileFound(
+      kExtensionId,
+      _,
+      cached_crx_path,
+      extensions::Manifest::EXTERNAL_POLICY,
+      _,
+      _));
+  EXPECT_CALL(visitor_, OnExternalProviderReady(provider_.get()))
+      .Times(1)
+      .WillOnce(InvokeWithoutArgs(&cache_run_loop, &base::RunLoop::Quit));
+  cache_run_loop.Run();
+  VerifyAndResetVisitorCallExpectations();
+
+  // Verify that the CRX file actually exists in the cache directory and its
+  // contents matches the file returned to the downloader.
+  EXPECT_TRUE(base::ContentsEqual(
+      test_dir_.Append(kExtensionCRXSourceDir).Append(kExtensionCRXFile),
+      cached_crx_path));
+
+  // Stop the cache. Verify that the loader announces an empty extension list.
+  EXPECT_CALL(visitor_, OnExternalProviderReady(provider_.get()))
+      .Times(1);
+  base::RunLoop shutdown_run_loop;
+  loader_->StopCache(shutdown_run_loop.QuitClosure());
+  VerifyAndResetVisitorCallExpectations();
+
+  // Spin the loop until the cache shutdown callback is invoked. Verify that at
+  // that point, no further file I/O tasks are pending.
+  shutdown_run_loop.Run();
+  EXPECT_TRUE(base::MessageLoop::current()->IsIdleForTesting());
+}

[Joao da Silva, 2013/10/17 14:57:54]

nice test

+
+}  // namespace chromeos