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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 "components/rappor/log_uploader.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "base/test/scoped_task_environment.h"
#include "base/threading/thread_task_runner_handle.h"
#include "net/url_request/test_url_fetcher_factory.h"
#include "net/url_request/url_request_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace rappor {
namespace {
const char kTestServerURL[] = "http://a.com/";
const char kTestMimeType[] = "text/plain";
class TestLogUploader : public LogUploader {
public:
explicit TestLogUploader(net::URLRequestContextGetter* request_context) :
LogUploader(GURL(kTestServerURL), kTestMimeType, request_context) {
Start();
}
base::TimeDelta last_interval_set() const { return last_interval_set_; }
void StartUpload() {
last_interval_set_ = base::TimeDelta();
StartScheduledUpload();
}
static base::TimeDelta BackOff(base::TimeDelta t) {
return LogUploader::BackOffUploadInterval(t);
}
protected:
bool IsUploadScheduled() const override {
return !last_interval_set().is_zero();
}
// Schedules a future call to StartScheduledUpload if one isn't already
// pending.
void ScheduleNextUpload(base::TimeDelta interval) override {
EXPECT_EQ(last_interval_set(), base::TimeDelta());
last_interval_set_ = interval;
}
base::TimeDelta last_interval_set_;
private:
DISALLOW_COPY_AND_ASSIGN(TestLogUploader);
};
} // namespace
class LogUploaderTest : public testing::Test {
public:
LogUploaderTest()
: scoped_task_environment_(
base::test::ScopedTaskEnvironment::MainThreadType::UI),
request_context_(new net::TestURLRequestContextGetter(
base::ThreadTaskRunnerHandle::Get())),
factory_(NULL) {}
protected:
// Required for base::ThreadTaskRunnerHandle::Get().
base::test::ScopedTaskEnvironment scoped_task_environment_;
scoped_refptr<net::TestURLRequestContextGetter> request_context_;
net::FakeURLFetcherFactory factory_;
private:
DISALLOW_COPY_AND_ASSIGN(LogUploaderTest);
};
TEST_F(LogUploaderTest, Success) {
TestLogUploader uploader(request_context_.get());
factory_.SetFakeResponse(GURL(kTestServerURL),
std::string(),
net::HTTP_OK,
net::URLRequestStatus::SUCCESS);
uploader.QueueLog("log1");
base::RunLoop().RunUntilIdle();
// Log should be discarded instead of retransmitted.
EXPECT_EQ(uploader.last_interval_set(), base::TimeDelta());
}
TEST_F(LogUploaderTest, Rejection) {
TestLogUploader uploader(request_context_.get());
factory_.SetFakeResponse(GURL(kTestServerURL),
std::string(),
net::HTTP_BAD_REQUEST,
net::URLRequestStatus::SUCCESS);
uploader.QueueLog("log1");
base::RunLoop().RunUntilIdle();
// Log should be discarded instead of retransmitted.
EXPECT_EQ(uploader.last_interval_set(), base::TimeDelta());
}
TEST_F(LogUploaderTest, Failure) {
TestLogUploader uploader(request_context_.get());
factory_.SetFakeResponse(GURL(kTestServerURL),
std::string(),
net::HTTP_INTERNAL_SERVER_ERROR,
net::URLRequestStatus::SUCCESS);
uploader.QueueLog("log1");
base::RunLoop().RunUntilIdle();
// Log should be scheduled for retransmission.
base::TimeDelta error_interval = uploader.last_interval_set();
EXPECT_GT(error_interval, base::TimeDelta());
for (int i = 0; i < 10; i++) {
uploader.QueueLog("logX");
}
// A second failure should lead to a longer interval, and the log should
// be discarded due to full queue.
uploader.StartUpload();
base::RunLoop().RunUntilIdle();
EXPECT_GT(uploader.last_interval_set(), error_interval);
factory_.SetFakeResponse(GURL(kTestServerURL),
std::string(),
net::HTTP_OK,
net::URLRequestStatus::SUCCESS);
// A success should revert to base interval while queue is not empty.
for (int i = 0; i < 9; i++) {
uploader.StartUpload();
base::RunLoop().RunUntilIdle();
EXPECT_LT(uploader.last_interval_set(), error_interval);
}
// Queue should be empty.
uploader.StartUpload();
base::RunLoop().RunUntilIdle();
EXPECT_EQ(uploader.last_interval_set(), base::TimeDelta());
}
TEST_F(LogUploaderTest, Backoff) {
base::TimeDelta current = base::TimeDelta();
base::TimeDelta next = base::TimeDelta::FromSeconds(1);
// Backoff until the maximum is reached.
while (next > current) {
current = next;
next = TestLogUploader::BackOff(current);
}
// Maximum backoff should have been reached.
EXPECT_EQ(next, current);
}
} // namespace rappor
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