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// Copyright (c) 2011 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.
#ifndef CONTENT_TEST_TEST_URL_FETCHER_FACTORY_H_
#define CONTENT_TEST_TEST_URL_FETCHER_FACTORY_H_
#pragma once
#include <list>
#include <map>
#include <string>
#include <utility>
#include "base/threading/non_thread_safe.h"
#include "content/common/net/url_fetcher.h"
#include "googleurl/src/gurl.h"
#include "net/url_request/url_request_status.h"
// Changes URLFetcher's Factory for the lifetime of the object.
// Note that this scoper cannot be nested (to make it even harder to misuse).
class ScopedURLFetcherFactory : public base::NonThreadSafe {
public:
explicit ScopedURLFetcherFactory(URLFetcher::Factory* factory);
virtual ~ScopedURLFetcherFactory();
private:
DISALLOW_COPY_AND_ASSIGN(ScopedURLFetcherFactory);
};
// TestURLFetcher and TestURLFetcherFactory are used for testing consumers of
// URLFetcher. TestURLFetcherFactory is a URLFetcher::Factory that creates
// TestURLFetchers. TestURLFetcher::Start is overriden to do nothing. It is
// expected that you'll grab the delegate from the TestURLFetcher and invoke
// the callback method when appropriate. In this way it's easy to mock a
// URLFetcher.
// Typical usage:
// // TestURLFetcher requires a MessageLoop:
// MessageLoopForUI message_loop;
// // And io_thread to release URLRequestContextGetter in URLFetcher::Core.
// BrowserThread io_thread(BrowserThread::IO, &message_loop);
// // Create factory (it automatically sets itself as URLFetcher's factory).
// TestURLFetcherFactory factory;
// // Do something that triggers creation of a URLFetcher.
// TestURLFetcher* fetcher = factory.GetFetcherByID(expected_id);
// DCHECK(fetcher);
// // Notify delegate with whatever data you want.
// fetcher->delegate()->OnURLFetchComplete(...);
// // Make sure consumer of URLFetcher does the right thing.
// ...
//
// Note: if you don't know when your request objects will be created you
// might want to use the FakeUrlFetcher and FakeUrlFetcherFactory classes
// below.
class TestURLFetcher : public URLFetcher {
public:
TestURLFetcher(int id,
const GURL& url,
RequestType request_type,
Delegate* d);
virtual ~TestURLFetcher();
// Overriden to do nothing. It is assumed the caller will notify the delegate.
virtual void Start() {}
// Overriden to cache the chunks uploaded. Caller can read back the uploaded
// chunks with the upload_data() accessor.
virtual void AppendChunkToUpload(const std::string& data, bool is_last_chunk)
OVERRIDE;
// Unique ID in our factory.
int id() const { return id_; }
// URL we were created with. Because of how we're using URLFetcher url()
// always returns an empty URL. Chances are you'll want to use original_url()
// in your tests.
virtual const GURL& original_url() const OVERRIDE;
// Returns the data uploaded on this URLFetcher.
const std::string& upload_data() const { return URLFetcher::upload_data(); }
// Returns the chunks of data uploaded on this URLFetcher.
const std::list<std::string>& upload_chunks() const { return chunks_; }
// Returns the delegate installed on the URLFetcher.
Delegate* delegate() const { return URLFetcher::delegate(); }
void set_url(const GURL& url) { fake_url_ = url; }
virtual const GURL& url() const OVERRIDE;
void set_status(const net::URLRequestStatus& status);
virtual const net::URLRequestStatus& status() const OVERRIDE;
void set_response_code(int response_code) {
fake_response_code_ = response_code;
}
virtual int response_code() const OVERRIDE;
void set_was_fetched_via_proxy(bool flag);
void set_response_headers(scoped_refptr<net::HttpResponseHeaders> headers);
// Set string data.
void SetResponseString(const std::string& response);
// Set File data.
void SetResponseFilePath(const FilePath& path);
// Override response access functions to return fake data.
virtual const std::string& GetResponseStringRef() const OVERRIDE;
virtual bool GetResponseAsString(std::string* out_response_string) const
OVERRIDE;
virtual bool GetResponseAsFilePath(bool take_ownership,
FilePath* out_response_path) const
OVERRIDE;
private:
const int id_;
const GURL original_url_;
std::list<std::string> chunks_;
bool did_receive_last_chunk_;
// User can use set_* methods to provide values returned by getters.
// Setting the real values is not possible, because the real class
// has no setters. The data is a private member of a class defined
// in a .cc file, so we can't get at it with friendship.
GURL fake_url_;
net::URLRequestStatus fake_status_;
int fake_response_code_;
std::string fake_response_string_;
FilePath fake_response_file_path_;
DISALLOW_COPY_AND_ASSIGN(TestURLFetcher);
};
// Simple URLFetcher::Factory method that creates TestURLFetchers. All fetchers
// are registered in a map by the id passed to the create method.
class TestURLFetcherFactory : public URLFetcher::Factory,
public ScopedURLFetcherFactory {
public:
TestURLFetcherFactory();
virtual ~TestURLFetcherFactory();
virtual URLFetcher* CreateURLFetcher(int id,
const GURL& url,
URLFetcher::RequestType request_type,
URLFetcher::Delegate* d) OVERRIDE;
TestURLFetcher* GetFetcherByID(int id) const;
void RemoveFetcherFromMap(int id);
private:
// Maps from id passed to create to the returned URLFetcher.
typedef std::map<int, TestURLFetcher*> Fetchers;
Fetchers fetchers_;
DISALLOW_COPY_AND_ASSIGN(TestURLFetcherFactory);
};
// The FakeUrlFetcher and FakeUrlFetcherFactory classes are similar to the
// ones above but don't require you to know when exactly the URLFetcher objects
// will be created.
//
// These classes let you set pre-baked HTTP responses for particular URLs.
// E.g., if the user requests http://a.com/ then respond with an HTTP/500.
//
// We assume that the thread that is calling Start() on the URLFetcher object
// has a message loop running.
//
// This class is not thread-safe. You should not call SetFakeResponse or
// ClearFakeResponse at the same time you call CreateURLFetcher. However, it is
// OK to start URLFetcher objects while setting or clearning fake responses
// since already created URLFetcher objects will not be affected by any changes
// made to the fake responses (once a URLFetcher object is created you cannot
// change its fake response).
//
// Example usage:
// FakeURLFetcherFactory factory;
//
// // You know that class SomeService will request url http://a.com/ and you
// // want to test the service class by returning an error.
// factory.SetFakeResponse("http://a.com/", "", false);
// // But if the service requests http://b.com/asdf you want to respond with
// // a simple html page and an HTTP/200 code.
// factory.SetFakeResponse("http://b.com/asdf",
// "<html><body>hello world</body></html>",
// true);
//
// SomeService service;
// service.Run(); // Will eventually request these two URLs.
class FakeURLFetcherFactory : public URLFetcher::Factory,
public ScopedURLFetcherFactory {
public:
FakeURLFetcherFactory();
// FakeURLFetcherFactory that will delegate creating URLFetcher for unknown
// url to the given factory.
explicit FakeURLFetcherFactory(URLFetcher::Factory* default_factory);
virtual ~FakeURLFetcherFactory();
// If no fake response is set for the given URL this method will delegate the
// call to |default_factory_| if it is not NULL, or return NULL if it is
// NULL.
// Otherwise, it will return a URLFetcher object which will respond with the
// pre-baked response that the client has set by calling SetFakeResponse().
virtual URLFetcher* CreateURLFetcher(int id,
const GURL& url,
URLFetcher::RequestType request_type,
URLFetcher::Delegate* d) OVERRIDE;
// Sets the fake response for a given URL. If success is true we will serve
// an HTTP/200 and an HTTP/500 otherwise. The |response_data| may be empty.
void SetFakeResponse(const std::string& url,
const std::string& response_data,
bool success);
// Clear all the fake responses that were previously set via
// SetFakeResponse().
void ClearFakeResponses();
private:
typedef std::map<GURL, std::pair<std::string, bool> > FakeResponseMap;
FakeResponseMap fake_responses_;
URLFetcher::Factory* default_factory_;
DISALLOW_COPY_AND_ASSIGN(FakeURLFetcherFactory);
};
// This is an implementation of URLFetcher::Factory that will create a real
// URLFetcher. It can be use in conjunction with a FakeURLFetcherFactory in
// integration tests to control the behavior of some requests but execute
// all the other ones.
class URLFetcherFactory : public URLFetcher::Factory {
public:
URLFetcherFactory();
virtual ~URLFetcherFactory();
// This method will create a real URLFetcher.
virtual URLFetcher* CreateURLFetcher(int id,
const GURL& url,
URLFetcher::RequestType request_type,
URLFetcher::Delegate* d) OVERRIDE;
};
#endif // CONTENT_TEST_TEST_URL_FETCHER_FACTORY_H_