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// Copyright 2014 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 <string>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "chrome/browser/devtools/devtools_network_conditions.h"
#include "chrome/browser/devtools/devtools_network_controller.h"
#include "chrome/browser/devtools/devtools_network_interceptor.h"
#include "chrome/browser/devtools/devtools_network_transaction.h"
#include "net/http/http_transaction_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace test {
const char kClientId[] = "42";
const char kAnotherClientId[] = "24";
class TestCallback {
public:
TestCallback() : run_count_(0), value_(0) {}
void Run(int value) {
run_count_++;
value_ = value;
}
int run_count() { return run_count_; }
int value() { return value_; }
private:
int run_count_;
int value_;
};
class DevToolsNetworkControllerHelper {
public:
DevToolsNetworkControllerHelper() :
completion_callback_(
base::Bind(&TestCallback::Run, base::Unretained(&callback_))),
mock_transaction_(kSimpleGET_Transaction),
buffer_(new net::IOBuffer(64)) {
mock_transaction_.test_mode = TEST_MODE_SYNC_NET_START;
mock_transaction_.url = "http://dot.com";
mock_transaction_.request_headers =
"X-DevTools-Emulate-Network-Conditions-Client-Id: 42\r\n";
AddMockTransaction(&mock_transaction_);
scoped_ptr<net::HttpTransaction> network_transaction;
network_layer_.CreateTransaction(
net::DEFAULT_PRIORITY, &network_transaction);
transaction_.reset(new DevToolsNetworkTransaction(
&controller_, network_transaction.Pass()));
}
net::HttpRequestInfo* GetRequest() {
if (!request_)
request_.reset(new MockHttpRequest(mock_transaction_));
return request_.get();
}
void SetNetworkState(const std::string id, bool offline) {
scoped_ptr<DevToolsNetworkConditions> conditions(
new DevToolsNetworkConditions(offline));
controller_.SetNetworkStateOnIO(id, conditions.Pass());
}
int Start() {
return transaction_->Start(
GetRequest(), completion_callback_, net::BoundNetLog());
}
int Read() {
return transaction_->Read(buffer_.get(), 64, completion_callback_);
}
bool ShouldFail() {
return transaction_->interceptor_->ShouldFail(transaction_.get());
}
~DevToolsNetworkControllerHelper() {
RemoveMockTransaction(&mock_transaction_);
}
TestCallback* callback() { return &callback_; }
MockTransaction* mock_transaction() { return &mock_transaction_; }
DevToolsNetworkController* controller() { return &controller_; }
DevToolsNetworkTransaction* transaction() { return transaction_.get(); }
private:
base::MessageLoop message_loop_;
MockNetworkLayer network_layer_;
TestCallback callback_;
net::CompletionCallback completion_callback_;
MockTransaction mock_transaction_;
DevToolsNetworkController controller_;
scoped_ptr<DevToolsNetworkTransaction> transaction_;
scoped_refptr<net::IOBuffer> buffer_;
scoped_ptr<MockHttpRequest> request_;
};
TEST(DevToolsNetworkControllerTest, SingleDisableEnable) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, false);
helper.Start();
EXPECT_FALSE(helper.ShouldFail());
helper.SetNetworkState(kClientId, true);
EXPECT_TRUE(helper.ShouldFail());
helper.SetNetworkState(kClientId, false);
EXPECT_FALSE(helper.ShouldFail());
base::RunLoop().RunUntilIdle();
}
TEST(DevToolsNetworkControllerTest, InterceptorIsolation) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, false);
helper.Start();
EXPECT_FALSE(helper.ShouldFail());
helper.SetNetworkState(kAnotherClientId, true);
EXPECT_FALSE(helper.ShouldFail());
helper.SetNetworkState(kClientId, true);
EXPECT_TRUE(helper.ShouldFail());
helper.SetNetworkState(kAnotherClientId, false);
helper.SetNetworkState(kClientId, false);
base::RunLoop().RunUntilIdle();
}
TEST(DevToolsNetworkControllerTest, FailOnStart) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, true);
int rv = helper.Start();
EXPECT_EQ(rv, net::ERR_INTERNET_DISCONNECTED);
base::RunLoop().RunUntilIdle();
EXPECT_EQ(helper.callback()->run_count(), 0);
}
TEST(DevToolsNetworkControllerTest, FailRunningTransaction) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, false);
TestCallback* callback = helper.callback();
int rv = helper.Start();
EXPECT_EQ(rv, net::OK);
scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(64));
rv = helper.Read();
EXPECT_EQ(rv, net::ERR_IO_PENDING);
EXPECT_EQ(callback->run_count(), 0);
helper.SetNetworkState(kClientId, true);
EXPECT_EQ(callback->run_count(), 1);
EXPECT_EQ(callback->value(), net::ERR_INTERNET_DISCONNECTED);
// Wait until HttpTrancation completes reading and invokes callback.
// DevToolsNetworkTransaction should ignore callback, because it has
// reported network error already.
base::RunLoop().RunUntilIdle();
EXPECT_EQ(callback->run_count(), 1);
// Check that transaction in not failed second time.
helper.SetNetworkState(kClientId, false);
helper.SetNetworkState(kClientId, true);
EXPECT_EQ(callback->run_count(), 1);
}
TEST(DevToolsNetworkControllerTest, ReadAfterFail) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, false);
int rv = helper.Start();
EXPECT_EQ(rv, net::OK);
EXPECT_TRUE(helper.transaction()->request());
helper.SetNetworkState(kClientId, true);
EXPECT_TRUE(helper.transaction()->failed());
scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(64));
rv = helper.Read();
EXPECT_EQ(rv, net::ERR_INTERNET_DISCONNECTED);
// Check that callback is never invoked.
base::RunLoop().RunUntilIdle();
EXPECT_EQ(helper.callback()->run_count(), 0);
}
TEST(DevToolsNetworkControllerTest, AllowsDevToolsRequests) {
DevToolsNetworkControllerHelper helper;
helper.SetNetworkState(kClientId, false);
helper.mock_transaction()->request_headers =
"X-DevTools-Emulate-Network-Conditions-Client-Id: 42\r\n"
"X-DevTools-Request-Initiator: frontend\r\n";
helper.Start();
EXPECT_FALSE(helper.ShouldFail());
helper.SetNetworkState(kClientId, true);
EXPECT_FALSE(helper.ShouldFail());
}
} // namespace test
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