Integration tests for WebStateDelegate::OnAuthRequired callback.

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

Index: ios/web/public/test/response_providers/http_auth_response_provider.h
diff --git a/ios/web/public/test/response_providers/http_auth_response_provider.h b/ios/web/public/test/response_providers/http_auth_response_provider.h
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+// Copyright 2017 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_HTTP_AUTH_RESPONSE_PROVIDER_H_
+#define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTTP_AUTH_RESPONSE_PROVIDER_H_
+
+#include <string>
+
+#import "ios/web/public/test/response_providers/html_response_provider.h"
+#include "url/gurl.h"
+
+namespace net {
+class HttpResponseHeaders;
+class HttpRequestHeaders;
+}  // namespace net
+
+namespace web {
+
+// Serves a page which requires Basic HTTP Authentication.
+class HttpAuthResponseProvider : public HtmlResponseProvider {
+ public:
+  // Constructs provider which will respond to the given |url| and will use the
+  // given authenticaion |realm|. |username| and |password| are credentials
+  // required for sucessfull authentication. Use different realms and
+  // username/password combination for different tests to prevent credentials
+  // caching.
+  HttpAuthResponseProvider(const GURL& url,
+                           const std::string& realm,
+                           const std::string& username,
+                           const std::string& password);
+  ~HttpAuthResponseProvider() override;
+
+  // HtmlResponseProvider overrides:
+  bool CanHandleRequest(const Request& request) override;
+  void GetResponseHeadersAndBody(
+      const Request& request,
+      scoped_refptr<net::HttpResponseHeaders>* headers,
+      std::string* response_body) override;
+
+  // Text returned in response if authentication was successfull.
+  static std::string page_text() { return "authenticated"; }
+
+ private:
+  // Checks if authorization header has valid credintials:
+  // https://tools.ietf.org/html/rfc1945#section-10.2
+  bool HeadersHaveValidCredentials(const net::HttpRequestHeaders& headers);
+
+  // URL this provider responds to.
+  GURL url_;
+  // HTTP Authentication realm.
+  std::string realm_;
+  // Correct username to pass authentication
+  std::string username_;
+  // Correct password to pass authentication
+  std::string password_;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_HTTP_AUTH_RESPONSE_PROVIDER_H_