Web shell test to go back and forward.

ios/web/public/test/response_providers/html_response_provider_impl.h

+// 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.
+
+#ifndef IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_
+#define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_
+
+#include <map>
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "ios/web/public/test/response_providers/data_response_provider.h"
+#include "ios/web/public/test/response_providers/response_provider.h"
+#include "net/http/http_response_headers.h"
+#include "net/http/http_status_code.h"
+#include "url/gurl.h"
+
+// This class encapsulates the logic needed to map a request URL to a response.
+// The mapping -- between URL to response -- is maintained internally, use
+// |CanHandleRequest| to check if a request can be handled and use
+// |GetResponseHeadersAndBody| to actually handle the request.
+class HtmlResponseProviderImpl {
+ public:
+  // Encapsulates the body and headers that make up a response.
+  struct Response {
+    Response(const std::string& body,
+             const scoped_refptr<net::HttpResponseHeaders>& headers);
+    Response(const Response&);
+    Response();
+    ~Response();
+
+    std::string body;
+    scoped_refptr<net::HttpResponseHeaders> headers;
+  };
+  // Constructs an HtmlResponseProviderImpl that does not respond to any
+  // request.
+  HtmlResponseProviderImpl();
+  // Constructs an HtmlResponseProviderImpl that generates a simple string
+  // response to a URL based on the mapping present in |responses|.
+  explicit HtmlResponseProviderImpl(
+      const std::map<GURL, std::string>& responses);
+  // Constructs an HtmlResponseProviderImpl that generates a response to a URL
+  // based on the mapping present in |responses|.
+  explicit HtmlResponseProviderImpl(const std::map<GURL, Response>& responses);
+
+  virtual ~HtmlResponseProviderImpl();
+
+  // Creates a reponse based on a redirect to |destination_url|.
+  static HtmlResponseProviderImpl::Response GetRedirectResponse(
+      const GURL& destination_url,
+      const net::HttpStatusCode& http_status);
+
+  // Creates a response with |net::HTTP_OK|.
+  static HtmlResponseProviderImpl::Response GetSimpleResponse(
+      const std::string& body);
+
+  // Returns true if the request can be handled.
+  bool CanHandleRequest(const web::ResponseProvider::Request& request);
+  // Returns the headers and the response body.
+  void GetResponseHeadersAndBody(
+      const web::ResponseProvider::Request& request,
+      scoped_refptr<net::HttpResponseHeaders>* headers,
+      std::string* response_body);
+
+ private:
+  const std::map<GURL, Response> responses_;
+};
+
+#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTML_RESPONSE_PROVIDER_IMPL_H_