Use mojo for Chrome Loading, Part 1

content/browser/loader/url_loader_factory_holder_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 "content/browser/loader/url_loader_factory_holder.h"
+
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "base/location.h"
+#include "base/memory/ptr_util.h"
+#include "base/memory/weak_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "base/path_service.h"
+#include "base/run_loop.h"
+#include "content/browser/loader/mojo_async_resource_handler.h"
+#include "content/browser/loader/resource_dispatcher_host_impl.h"
+#include "content/browser/loader/resource_message_filter.h"
+#include "content/browser/loader/test_url_loader_client.h"
+#include "content/browser/loader_delegate_impl.h"
+#include "content/common/resource_request.h"
+#include "content/common/resource_request_completion_status.h"
+#include "content/common/url_loader.mojom.h"
+#include "content/common/url_loader_factory.mojom.h"
+#include "content/public/browser/resource_context.h"
+#include "content/public/browser/resource_dispatcher_host_delegate.h"
+#include "content/public/common/content_paths.h"
+#include "content/public/test/test_browser_context.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "mojo/public/c/system/data_pipe.h"
+#include "mojo/public/c/system/types.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/system/data_pipe.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+#include "net/http/http_response_headers.h"
+#include "net/http/http_response_info.h"
+#include "net/http/http_status_code.h"
+#include "net/http/http_util.h"
+#include "net/test/url_request/url_request_failed_job.h"
+#include "net/test/url_request/url_request_mock_http_job.h"
+#include "net/url_request/url_request_filter.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace content {
+
+namespace {
+
+class RejectingResourceDispatcherHostDelegate final
+    : public ResourceDispatcherHostDelegate {
+ public:
+  RejectingResourceDispatcherHostDelegate() {}
+  bool ShouldBeginRequest(const std::string& method,
+                          const GURL& url,
+                          ResourceType resource_type,
+                          ResourceContext* resource_context) override {
+    return false;
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(RejectingResourceDispatcherHostDelegate);
+};
+
+// The test parameter is the number of bytes allocated for the buffer in the
+// data pipe, for testing the case where the allocated size is smaller than the
+// size the mime sniffer *implicitly* requires.
+class URLLoaderFactoryImplTest : public ::testing::TestWithParam<size_t> {
+ public:
+  URLLoaderFactoryImplTest()
+      : thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP),
+        browser_context_(new TestBrowserContext()),
+        resource_message_filter_(new ResourceMessageFilter(
+            0,
+            0,
+            nullptr,
+            nullptr,
+            nullptr,
+            nullptr,
+            nullptr,
+            base::Bind(&URLLoaderFactoryImplTest::GetContexts,
+                       base::Unretained(this)))) {
+    MojoAsyncResourceHandler::SetAllocationSizeForTesting(GetParam());
+    rdh_.SetLoaderDelegate(&loader_deleate_);
+
+    factory_impl_holder_.reset(new URLLoaderFactoryHolder(
+        resource_message_filter_, mojo::GetProxy(&factory_)));
+
+    // Calling this function creates a request context.
+    browser_context_->GetResourceContext()->GetRequestContext();
+    base::RunLoop().RunUntilIdle();
+  }
+
+  ~URLLoaderFactoryImplTest() override {
+    rdh_.SetDelegate(nullptr);
+    net::URLRequestFilter::GetInstance()->ClearHandlers();
+
+    rdh_.CancelRequestsForProcess(resource_message_filter_->child_id());
+    base::RunLoop().RunUntilIdle();
+    MojoAsyncResourceHandler::SetAllocationSizeForTesting(
+        MojoAsyncResourceHandler::kDefaultAllocationSize);
+  }
+
+  void GetContexts(ResourceType resource_type,
+                   ResourceContext** resource_context,
+                   net::URLRequestContext** request_context) {
+    *resource_context = browser_context_->GetResourceContext();
+    *request_context =
+        browser_context_->GetResourceContext()->GetRequestContext();
+  }
+
+  TestBrowserThreadBundle thread_bundle_;
+  LoaderDelegateImpl loader_deleate_;
+  ResourceDispatcherHostImpl rdh_;
+  std::unique_ptr<TestBrowserContext> browser_context_;
+  scoped_refptr<ResourceMessageFilter> resource_message_filter_;
+  mojom::URLLoaderFactoryPtr factory_;
+  std::unique_ptr<URLLoaderFactoryHolder> factory_impl_holder_;
+
+  DISALLOW_COPY_AND_ASSIGN(URLLoaderFactoryImplTest);
+};
+
+TEST_P(URLLoaderFactoryImplTest, GetResponse) {
+  mojom::URLLoaderPtr loader;
+  base::FilePath root;
+  PathService::Get(DIR_TEST_DATA, &root);
+  net::URLRequestMockHTTPJob::AddUrlHandlers(root,
+                                             BrowserThread::GetBlockingPool());
+  ResourceRequest request;
+  TestURLLoaderClient client;
+  // Assume the file contents is small enough to be stored in the data pipe.
+  request.url = net::URLRequestMockHTTPJob::GetMockUrl("hello.html");
+  request.method = "GET";
+  factory_->CreateLoaderAndStart(mojo::GetProxy(&loader), 1, request,
+                                 client.CreateInterfacePtrAndBind());
+
+  ASSERT_FALSE(client.has_received_response());
+  ASSERT_FALSE(client.response_body().is_valid());
+  ASSERT_FALSE(client.has_received_completion());
+
+  client.RunUntilResponseReceived();
+  ASSERT_FALSE(client.has_received_completion());
+  ASSERT_FALSE(client.has_received_completion());
+
+  client.RunUntilResponseBodyArrived();
+  ASSERT_TRUE(client.response_body().is_valid());
+  ASSERT_FALSE(client.has_received_completion());
+
+  client.RunUntilComplete();
+
+  EXPECT_EQ(200, client.response_head().headers->response_code());
+  std::string content_type;
+  client.response_head().headers->GetNormalizedHeader("content-type",
+                                                      &content_type);
+  EXPECT_EQ("text/html", content_type);
+  EXPECT_EQ(0, client.completion_status().error_code);
+
+  std::string contents;
+  while (true) {
+    char buffer[16];
+    uint32_t read = sizeof(buffer);

[kinuko, 2016/08/04 16:07:03]

ditto

[yhirano, 2016/08/05 12:21:40]

Done.

+    MojoResult r = mojo::ReadDataRaw(client.response_body(), buffer, &read,
+                                     MOJO_READ_DATA_FLAG_NONE);
+    if (r == MOJO_RESULT_FAILED_PRECONDITION)
+      break;
+    if (r == MOJO_RESULT_SHOULD_WAIT)
+      continue;
+    ASSERT_EQ(MOJO_RESULT_OK, r);
+    contents += std::string(buffer, read);
+  }
+  EXPECT_EQ(
+      "<!doctype html>\n"
+      "<p>hello</p>\n",

[kinuko, 2016/08/04 16:07:03]

nit: reading out file contents is easy in tests (e.g. with
base::ReadFileToString()), we could probably just compare the |contents| with
actual file content of hello.html

[yhirano, 2016/08/05 12:21:39]

Done.

+      contents);
+}
+
+TEST_P(URLLoaderFactoryImplTest, GetFailedResponse) {
+  mojom::URLLoaderPtr loader;
+  ResourceRequest request;
+  TestURLLoaderClient client;
+  net::URLRequestFailedJob::AddUrlHandler();
+  request.url = net::URLRequestFailedJob::GetMockHttpUrlWithFailurePhase(
+      net::URLRequestFailedJob::START, net::ERR_TIMED_OUT);
+  request.method = "GET";
+  factory_->CreateLoaderAndStart(mojo::GetProxy(&loader), 1, request,
+                                 client.CreateInterfacePtrAndBind());
+
+  client.RunUntilComplete();
+  ASSERT_FALSE(client.has_received_response());
+  ASSERT_FALSE(client.response_body().is_valid());
+
+  EXPECT_EQ(net::ERR_TIMED_OUT, client.completion_status().error_code);
+}
+
+// This test tests a case where resource loading is cancelled before started.
+TEST_P(URLLoaderFactoryImplTest, InvalidURL) {
+  mojom::URLLoaderPtr loader;
+  ResourceRequest request;
+  TestURLLoaderClient client;
+  request.url = GURL();
+  request.method = "GET";
+  ASSERT_FALSE(request.url.is_valid());
+  factory_->CreateLoaderAndStart(mojo::GetProxy(&loader), 1, request,
+                                 client.CreateInterfacePtrAndBind());
+
+  client.RunUntilComplete();
+  ASSERT_FALSE(client.has_received_response());
+  ASSERT_FALSE(client.response_body().is_valid());
+
+  EXPECT_EQ(net::ERR_ABORTED, client.completion_status().error_code);
+}
+
+// This test tests a case where resource loading is cancelled before started.
+TEST_P(URLLoaderFactoryImplTest, ShouldNotRequestURL) {
+  mojom::URLLoaderPtr loader;
+  RejectingResourceDispatcherHostDelegate rdh_delegate;
+  rdh_.SetDelegate(&rdh_delegate);
+  ResourceRequest request;
+  TestURLLoaderClient client;
+  request.url = GURL("http://localhost/");
+  request.method = "GET";
+  factory_->CreateLoaderAndStart(mojo::GetProxy(&loader), 1, request,
+                                 client.CreateInterfacePtrAndBind());
+
+  client.RunUntilComplete();
+  rdh_.SetDelegate(nullptr);
+
+  ASSERT_FALSE(client.has_received_response());
+  ASSERT_FALSE(client.response_body().is_valid());
+
+  EXPECT_EQ(net::ERR_ABORTED, client.completion_status().error_code);
+}
+
+INSTANTIATE_TEST_CASE_P(URLLoaderFactoryImplTest,
+                        URLLoaderFactoryImplTest,
+                        ::testing::Values(128, 32 * 1024));
+
+}  // namespace
+
+}  // namespace content