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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/callback.h"
#include "base/json/json_writer.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/message_loop/message_loop_proxy.h"
#include "base/values.h"
#include "chrome/browser/supervised_user/experimental/supervised_user_async_url_checker.h"
#include "net/url_request/test_url_fetcher_factory.h"
#include "net/url_request/url_request_test_util.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
using testing::_;
namespace {
const char kCx[] = "somecsecx";
const size_t kCacheSize = 2;
const int kSupervisedUserAsyncURLCheckerSafeURLFetcherID = 0;
const int kSupervisedUserAsyncURLCheckerUnsafeURLFetcherID = 1;
const char* kURLs[] = {
"http://www.randomsite1.com",
"http://www.randomsite2.com",
"http://www.randomsite3.com",
"http://www.randomsite4.com",
"http://www.randomsite5.com",
"http://www.randomsite6.com",
"http://www.randomsite7.com",
"http://www.randomsite8.com",
"http://www.randomsite9.com",
};
std::string BuildResponse(const GURL& url) {
base::DictionaryValue dict;
base::DictionaryValue* search_info_dict = new base::DictionaryValue;
std::string result_count = url.is_valid() ? "1" : "0";
search_info_dict->SetStringWithoutPathExpansion("totalResults",
result_count);
dict.SetWithoutPathExpansion("searchInformation", search_info_dict);
if (result_count != "0") {
base::ListValue* results_list = new base::ListValue;
base::DictionaryValue* result_dict = new base::DictionaryValue;
result_dict->SetStringWithoutPathExpansion("link", url.spec());
results_list->Append(result_dict);
dict.SetWithoutPathExpansion("items", results_list);
}
std::string result;
base::JSONWriter::Write(&dict, &result);
return result;
}
} // namespace
class SupervisedUserAsyncURLCheckerTest : public testing::Test {
public:
SupervisedUserAsyncURLCheckerTest()
: next_url_(0),
request_context_(new net::TestURLRequestContextGetter(
base::MessageLoopProxy::current())),
checker_(request_context_.get(), kCx, kCacheSize) {
}
MOCK_METHOD3(OnCheckDone,
void(const GURL& url,
SupervisedUserURLFilter::FilteringBehavior behavior,
bool uncertain));
protected:
GURL GetNewURL() {
CHECK(next_url_ < arraysize(kURLs));
return GURL(kURLs[next_url_++]);
}
// Returns true if the result was returned synchronously (cache hit).
bool CheckURL(const GURL& url) {
return checker_.CheckURL(
url,
base::Bind(&SupervisedUserAsyncURLCheckerTest::OnCheckDone,
base::Unretained(this)));
}
net::TestURLFetcher* GetURLFetcher(bool safe) {
int id = safe ? kSupervisedUserAsyncURLCheckerSafeURLFetcherID
: kSupervisedUserAsyncURLCheckerUnsafeURLFetcherID;
net::TestURLFetcher* url_fetcher = url_fetcher_factory_.GetFetcherByID(id);
EXPECT_TRUE(url_fetcher);
return url_fetcher;
}
void SendResponse(bool safe,
net::URLRequestStatus::Status status,
const std::string& response) {
net::TestURLFetcher* url_fetcher = GetURLFetcher(safe);
url_fetcher->set_status(net::URLRequestStatus(status, 0));
url_fetcher->set_response_code(net::HTTP_OK);
url_fetcher->SetResponseString(response);
url_fetcher->delegate()->OnURLFetchComplete(url_fetcher);
}
void SendValidResponse(bool safe, const GURL& url) {
SendResponse(safe, net::URLRequestStatus::SUCCESS, BuildResponse(url));
}
void SendFailedResponse(bool safe) {
SendResponse(safe, net::URLRequestStatus::CANCELED, std::string());
}
size_t next_url_;
base::MessageLoop message_loop_;
scoped_refptr<net::TestURLRequestContextGetter> request_context_;
net::TestURLFetcherFactory url_fetcher_factory_;
SupervisedUserAsyncURLChecker checker_;
};
TEST_F(SupervisedUserAsyncURLCheckerTest, Simple) {
{
GURL url(GetNewURL());
EXPECT_FALSE(CheckURL(url));
// "URL found" response from safe fetcher should immediately give a
// "not blocked" result.
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url);
}
{
GURL url(GetNewURL());
EXPECT_FALSE(CheckURL(url));
// "URL not found" response from safe fetcher should not immediately give a
// result.
EXPECT_CALL(*this, OnCheckDone(_, _, _)).Times(0);
SendValidResponse(true, GURL());
// "URL found" response from unsafe fetcher should give a "blocked" result.
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::BLOCK, false));
SendValidResponse(false, url);
}
{
GURL url(GetNewURL());
EXPECT_FALSE(CheckURL(url));
// "URL found" response from unsafe fetcher should not immediately give a
// result.
EXPECT_CALL(*this, OnCheckDone(_, _, _)).Times(0);
SendValidResponse(false, url);
// "URL not found" response from safe fetcher should give a "blocked"
// result.
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::BLOCK, false));
SendValidResponse(true, GURL());
}
{
GURL url(GetNewURL());
EXPECT_FALSE(CheckURL(url));
// "URL not found" response from unsafe fetcher should immediately give a
// "not blocked (but uncertain)" result.
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, true));
SendValidResponse(false, GURL());
}
}
TEST_F(SupervisedUserAsyncURLCheckerTest, Equivalence) {
// Leading "www." in the response should be ignored.
{
GURL url("http://example.com");
GURL url_response("http://www.example.com");
EXPECT_FALSE(CheckURL(url));
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url_response);
}
// Scheme should be ignored.
{
GURL url("http://www.example2.com");
GURL url_response("https://www.example2.com");
EXPECT_FALSE(CheckURL(url));
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url_response);
}
// Both at the same time should work as well.
{
GURL url("http://example3.com");
GURL url_response("https://www.example3.com");
EXPECT_FALSE(CheckURL(url));
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url_response);
}
}
TEST_F(SupervisedUserAsyncURLCheckerTest, Cache) {
// One more URL than fit in the cache.
ASSERT_EQ(2u, kCacheSize);
GURL url1(GetNewURL());
GURL url2(GetNewURL());
GURL url3(GetNewURL());
// Populate the cache.
EXPECT_FALSE(CheckURL(url1));
EXPECT_CALL(*this, OnCheckDone(url1, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url1);
EXPECT_FALSE(CheckURL(url2));
EXPECT_CALL(*this, OnCheckDone(url2, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url2);
// Now we should get results synchronously.
EXPECT_CALL(*this, OnCheckDone(url2, SupervisedUserURLFilter::ALLOW, false));
EXPECT_TRUE(CheckURL(url2));
EXPECT_CALL(*this, OnCheckDone(url1, SupervisedUserURLFilter::ALLOW, false));
EXPECT_TRUE(CheckURL(url1));
// Now |url2| is the LRU and should be evicted on the next check.
EXPECT_FALSE(CheckURL(url3));
EXPECT_CALL(*this, OnCheckDone(url3, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url3);
EXPECT_FALSE(CheckURL(url2));
EXPECT_CALL(*this, OnCheckDone(url2, SupervisedUserURLFilter::ALLOW, false));
SendValidResponse(true, url2);
}
TEST_F(SupervisedUserAsyncURLCheckerTest, CoalesceRequestsToSameURL) {
GURL url(GetNewURL());
// Start two checks for the same URL.
EXPECT_FALSE(CheckURL(url));
EXPECT_FALSE(CheckURL(url));
// A single response should answer both checks.
EXPECT_CALL(*this, OnCheckDone(url, SupervisedUserURLFilter::ALLOW, false))
.Times(2);
SendValidResponse(true, url);
}
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