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// 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/mock_resource_loader.h"
#include <memory>
#include "base/memory/ref_counted.h"
#include "content/browser/loader/resource_controller.h"
#include "content/browser/loader/resource_handler.h"
#include "net/base/io_buffer.h"
#include "net/url_request/url_request_status.h"
#include "services/network/public/cpp/resource_response.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content {
class MockResourceLoader::TestResourceController : public ResourceController {
public:
explicit TestResourceController(base::WeakPtr<MockResourceLoader> mock_loader)
: mock_loader_(mock_loader) {}
~TestResourceController() override {}
void Resume() override { mock_loader_->OnResume(); }
void Cancel() override { CancelWithError(net::ERR_ABORTED); }
void CancelWithError(int error_code) override {
mock_loader_->OnCancel(error_code);
}
base::WeakPtr<MockResourceLoader> mock_loader_;
};
MockResourceLoader::MockResourceLoader(ResourceHandler* resource_handler)
: resource_handler_(resource_handler), weak_factory_(this) {
resource_handler_->SetDelegate(this);
}
MockResourceLoader::~MockResourceLoader() {}
MockResourceLoader::Status MockResourceLoader::OnWillStart(const GURL& url) {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
EXPECT_EQ(Status::IDLE, status_);
status_ = Status::CALLING_HANDLER;
resource_handler_->OnWillStart(url, std::make_unique<TestResourceController>(
weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
return status_;
}
MockResourceLoader::Status MockResourceLoader::OnRequestRedirected(
const net::RedirectInfo& redirect_info,
scoped_refptr<network::ResourceResponse> response) {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
EXPECT_EQ(Status::IDLE, status_);
status_ = Status::CALLING_HANDLER;
// Note that |this| does not hold onto |response|, to match ResourceLoader's
// behavior. If |resource_handler_| wants to use |response| asynchronously, it
// needs to hold onto its own pointer to it.
resource_handler_->OnRequestRedirected(
redirect_info, response.get(),
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
return status_;
}
MockResourceLoader::Status MockResourceLoader::OnResponseStarted(
scoped_refptr<network::ResourceResponse> response) {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
EXPECT_EQ(Status::IDLE, status_);
status_ = Status::CALLING_HANDLER;
// Note that |this| does not hold onto |response|, to match ResourceLoader's
// behavior. If |resource_handler_| wants to use |response| asynchronously, it
// needs to hold onto its own pointer to it.
resource_handler_->OnResponseStarted(
response.get(),
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
return status_;
}
MockResourceLoader::Status MockResourceLoader::OnWillRead() {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
EXPECT_EQ(Status::IDLE, status_);
status_ = Status::CALLING_HANDLER;
waiting_on_buffer_ = true;
resource_handler_->OnWillRead(
&io_buffer_, &io_buffer_size_,
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER) {
// Shouldn't update |io_buffer_| or |io_buffer_size_| yet if Resume()
// hasn't yet been called.
EXPECT_FALSE(io_buffer_);
EXPECT_EQ(0, io_buffer_size_);
status_ = Status::CALLBACK_PENDING;
}
return status_;
};
MockResourceLoader::Status MockResourceLoader::OnReadCompleted(
base::StringPiece bytes) {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
EXPECT_EQ(Status::IDLE, status_);
EXPECT_LE(bytes.size(), static_cast<size_t>(io_buffer_size_));
status_ = Status::CALLING_HANDLER;
std::copy(bytes.begin(), bytes.end(), io_buffer_->data());
io_buffer_ = nullptr;
io_buffer_size_ = 0;
resource_handler_->OnReadCompleted(
bytes.size(),
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
return status_;
}
MockResourceLoader::Status MockResourceLoader::OnResponseCompleted(
const net::URLRequestStatus& status) {
EXPECT_FALSE(weak_factory_.HasWeakPtrs());
// This should only happen while the ResourceLoader is idle or the request was
// canceled.
EXPECT_TRUE(status_ == Status::IDLE ||
(!status.is_success() && status_ == Status::CANCELED &&
error_code_ == status.error()));
io_buffer_ = nullptr;
io_buffer_size_ = 0;
status_ = Status::CALLING_HANDLER;
resource_handler_->OnResponseCompleted(
status,
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
EXPECT_NE(Status::CANCELED, status_);
return status_;
}
MockResourceLoader::Status
MockResourceLoader::OnResponseCompletedFromExternalOutOfBandCancel(
const net::URLRequestStatus& url_request_status) {
// This can happen at any point, except from a recursive call from
// ResourceHandler.
EXPECT_NE(Status::CALLING_HANDLER, status_);
waiting_on_buffer_ = false;
io_buffer_ = nullptr;
io_buffer_size_ = 0;
status_ = Status::CALLING_HANDLER;
resource_handler_->OnResponseCompleted(
url_request_status,
std::make_unique<TestResourceController>(weak_factory_.GetWeakPtr()));
if (status_ == Status::CALLING_HANDLER)
status_ = Status::CALLBACK_PENDING;
EXPECT_NE(Status::CANCELED, status_);
return status_;
}
void MockResourceLoader::WaitUntilIdleOrCanceled() {
if (status_ == Status::IDLE || status_ == Status::CANCELED)
return;
EXPECT_FALSE(canceled_or_idle_run_loop_);
canceled_or_idle_run_loop_.reset(new base::RunLoop());
canceled_or_idle_run_loop_->Run();
canceled_or_idle_run_loop_.reset();
EXPECT_TRUE(status_ == Status::IDLE || status_ == Status::CANCELED);
}
void MockResourceLoader::OutOfBandCancel(int error_code, bool tell_renderer) {
// Shouldn't be called in-band.
EXPECT_NE(Status::CALLING_HANDLER, status_);
status_ = Status::CANCELED;
canceled_out_of_band_ = true;
// If OnWillRead was deferred, no longer waiting on a buffer.
waiting_on_buffer_ = false;
// To mimic real behavior, keep old error, in the case of double-cancel.
if (error_code_ == net::OK)
error_code_ = error_code;
}
void MockResourceLoader::OnCancel(int error_code) {
// It's currently allowed to be canceled in-band after being cancelled
// out-of-band, so do nothing, unless the status is no longer CANCELED, which
// which case, OnResponseCompleted has already been called, and cancels aren't
// expected then.
// TODO(mmenke): Make CancelOutOfBand synchronously destroy the
// ResourceLoader.
if (canceled_out_of_band_ && status_ == Status::CANCELED)
return;
// Shouldn't update |io_buffer_| or |io_buffer_size_| on cancel.
if (waiting_on_buffer_) {
EXPECT_FALSE(io_buffer_);
EXPECT_EQ(0, io_buffer_size_);
waiting_on_buffer_ = false;
}
EXPECT_LT(error_code, 0);
EXPECT_TRUE(status_ == Status::CALLBACK_PENDING ||
status_ == Status::CALLING_HANDLER);
status_ = Status::CANCELED;
error_code_ = error_code;
if (canceled_or_idle_run_loop_)
canceled_or_idle_run_loop_->Quit();
}
void MockResourceLoader::OnResume() {
if (waiting_on_buffer_) {
EXPECT_TRUE(io_buffer_);
EXPECT_LT(0, io_buffer_size_);
waiting_on_buffer_ = false;
}
// Shouldn't update |io_buffer_| or |io_buffer_size_| on cancel.
EXPECT_TRUE(status_ == Status::CALLBACK_PENDING ||
status_ == Status::CALLING_HANDLER);
status_ = Status::IDLE;
if (canceled_or_idle_run_loop_)
canceled_or_idle_run_loop_->Quit();
}
} // namespace content
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