move file access permission logic to DownloadResourceThrottle

chrome/browser/download/download_resource_throttle_unittest.cc

Index: chrome/browser/download/download_resource_throttle_unittest.cc
diff --git a/chrome/browser/download/download_resource_throttle_unittest.cc b/chrome/browser/download/download_resource_throttle_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..20ac74d7c6085d57679200aef375310a25695ed6
--- /dev/null
+++ b/chrome/browser/download/download_resource_throttle_unittest.cc
@@ -0,0 +1,123 @@
+// Copyright (c) 2015 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 "base/bind.h"
+#include "base/run_loop.h"
+#include "chrome/browser/download/download_request_limiter.h"
+#include "chrome/browser/download/download_resource_throttle.h"
+#include "chrome/test/base/chrome_render_view_host_test_harness.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/resource_controller.h"
+#include "content/public/browser/resource_throttle.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_delegate.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#if defined(OS_ANDROID)
+#include "chrome/browser/android/download/mock_download_controller_android.h"
+#endif
+
+namespace {
+
+const char kTestUrl[] = "http://www.example.com/";
+
+}  // namespace
+
+class MockWebContentsDelegate : public content::WebContentsDelegate {
+ public:
+  MockWebContentsDelegate() {}
+  ~MockWebContentsDelegate() override {}
+};
+
+class MockResourceController : public content::ResourceController {
+ public:
+  MOCK_METHOD0(Cancel, void());
+  MOCK_METHOD0(CancelAndIgnore, void());
+  MOCK_METHOD1(CancelWithError, void(int));
+  MOCK_METHOD0(Resume, void());
+};
+
+// Posts |quit_closure| to UI thread.
+ACTION_P(QuitLoop, quit_closure) {
+  content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
+                                   quit_closure);
+}
+
+class DownloadResourceThrottleTest : public ChromeRenderViewHostTestHarness {
+ public:
+  DownloadResourceThrottleTest()
+      : throttle_(nullptr), limiter_(new DownloadRequestLimiter()) {
+    // Cannot use IO_MAIN_LOOP with RenderViewHostTestHarness.
+    SetThreadBundleOptions(content::TestBrowserThreadBundle::REAL_IO_THREAD);
+  }
+
+  ~DownloadResourceThrottleTest() override {}
+
+  void SetUp() override {
+    ChromeRenderViewHostTestHarness::SetUp();
+    web_contents()->SetDelegate(&delegate_);
+    run_loop_.reset(new base::RunLoop());
+#if defined(OS_ANDROID)
+    content::DownloadControllerAndroid::SetDownloadControllerAndroid(
+        &download_controller_);
+#endif
+  }
+
+  void TearDown() override {
+    content::BrowserThread::DeleteSoon(content::BrowserThread::IO, FROM_HERE,
+                                       throttle_);
+#if defined(OS_ANDROID)
+    content::DownloadControllerAndroid::SetDownloadControllerAndroid(nullptr);
+#endif
+    ChromeRenderViewHostTestHarness::TearDown();
+  }
+
+  void StartThrottleOnIOThread(int process_id, int render_view_id) {
+    throttle_ = new DownloadResourceThrottle(
+        limiter_, process_id, render_view_id, GURL(kTestUrl), "GET");
+    throttle_->set_controller_for_testing(&resource_controller_);
+    bool defer;
+    throttle_->WillStartRequest(&defer);
+    EXPECT_EQ(true, defer);
+  }
+
+  void StartThrottle() {
+    content::BrowserThread::PostTask(
+        content::BrowserThread::IO, FROM_HERE,
+        base::Bind(&DownloadResourceThrottleTest::StartThrottleOnIOThread,
+                   base::Unretained(this),
+                   web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+                   web_contents()->GetRoutingID()));
+    run_loop_->Run();
+  }
+
+ protected:
+  content::ResourceThrottle* throttle_;
+  MockWebContentsDelegate delegate_;
+  scoped_refptr<DownloadRequestLimiter> limiter_;
+  ::testing::NiceMock<MockResourceController> resource_controller_;
+  scoped_ptr<base::RunLoop> run_loop_;
+#if defined(OS_ANDROID)
+  chrome::android::MockDownloadControllerAndroid download_controller_;
+#endif
+};
+
+TEST_F(DownloadResourceThrottleTest, StartDownloadThrottle_Basic) {
+  EXPECT_CALL(resource_controller_, Resume())
+      .WillOnce(QuitLoop(run_loop_->QuitClosure()));
+  StartThrottle();
+}
+
+#if defined(OS_ANDROID)
+TEST_F(DownloadResourceThrottleTest, DownloadWithFailedFileAcecssRequest) {
+  content::DownloadControllerAndroid::Get()
+      ->SetApproveFileAccessRequestForTesting(false);
+  EXPECT_CALL(resource_controller_, Cancel())
+      .WillOnce(QuitLoop(run_loop_->QuitClosure()));
+  StartThrottle();
+}
+#endif