[ios] Implemented redirect EG tests for web shell.

ios/web/shell/test/redirect_egtest.mm

Index: ios/web/shell/test/redirect_egtest.mm
diff --git a/ios/web/shell/test/redirect_egtest.mm b/ios/web/shell/test/redirect_egtest.mm
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+++ b/ios/web/shell/test/redirect_egtest.mm
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+// 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.
+
+#import <EarlGrey/EarlGrey.h>
+
+#import "ios/web/public/test/http_server.h"
+#include "ios/web/public/test/http_server_util.h"
+#include "ios/web/public/test/response_providers/html_response_provider.h"
+#include "ios/web/public/test/response_providers/html_response_provider_impl.h"
+#include "ios/web/shell/test/app/navigation_test_util.h"
+#import "ios/web/shell/test/earl_grey/shell_base_test_case.h"
+#import "ios/web/shell/test/earl_grey/shell_matchers.h"
+#include "net/http/http_status_code.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+using web::addressFieldText;
+using web::test::HttpServer;
+using web::webViewContainingText;
+
+// Redirect test cases for the web shell.
+@interface RedirectTest : ShellBaseTestCase
+@end
+
+@implementation RedirectTest
+
+// Tests loading of page that is redirected 3 times using a 301 redirect.
+- (void)testMultipleRedirects {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, HtmlResponseProviderImpl::Response> responses;
+  const GURL firstRedirectURL = HttpServer::MakeUrl("http://firstRedirect/");
+  const GURL secondRedirectURL = HttpServer::MakeUrl("http://secondRedirect/");
+  const GURL thirdRedirectURL = HttpServer::MakeUrl("http://thirdRedirect/");
+  const GURL destinationURL = HttpServer::MakeUrl("http://destination/");
+
+  responses[firstRedirectURL] = HtmlResponseProviderImpl::GetRedirectResponse(
+      secondRedirectURL, net::HTTP_MOVED_PERMANENTLY);
+  responses[secondRedirectURL] = HtmlResponseProviderImpl::GetRedirectResponse(
+      thirdRedirectURL, net::HTTP_MOVED_PERMANENTLY);
+  responses[thirdRedirectURL] = HtmlResponseProviderImpl::GetRedirectResponse(
+      destinationURL, net::HTTP_MOVED_PERMANENTLY);
+  const char kFinalPageContent[] = "testMultipleRedirects complete";
+  responses[destinationURL] =
+      HtmlResponseProviderImpl::GetSimpleResponse(kFinalPageContent);
+  std::unique_ptr<web::DataResponseProvider> provider(
+      new HtmlResponseProvider(responses));
+  web::test::SetUpHttpServer(std::move(provider));
+
+  // Load first URL and expect destination URL to load.
+  web::shell_test_util::LoadUrl(firstRedirectURL);
+  [[EarlGrey selectElementWithMatcher:addressFieldText(destinationURL.spec())]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText(kFinalPageContent)]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests simple 301 redirection.
+- (void)testRedirection301 {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, HtmlResponseProviderImpl::Response> responses;
+  const GURL firstRedirectURL = HttpServer::MakeUrl("http://firstRedirect/");
+  const GURL destinationURL = HttpServer::MakeUrl("http://destination/");
+
+  responses[firstRedirectURL] = HtmlResponseProviderImpl::GetRedirectResponse(
+      destinationURL, net::HTTP_MOVED_PERMANENTLY);
+  const char kFinalPageContent[] = "testRedirection301 complete";
+  responses[destinationURL] =
+      HtmlResponseProviderImpl::GetSimpleResponse(kFinalPageContent);
+  std::unique_ptr<web::DataResponseProvider> provider(
+      new HtmlResponseProvider(responses));
+  web::test::SetUpHttpServer(std::move(provider));
+
+  // Load first URL and expect destination URL to load.
+  web::shell_test_util::LoadUrl(firstRedirectURL);
+  [[EarlGrey selectElementWithMatcher:addressFieldText(destinationURL.spec())]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText(kFinalPageContent)]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests simple 302 redirection.
+- (void)testRedirection302 {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, HtmlResponseProviderImpl::Response> responses;
+  const GURL firstRedirectURL = HttpServer::MakeUrl("http://firstRedirect/");
+  const GURL destinationURL = HttpServer::MakeUrl("http://destination/");
+
+  responses[firstRedirectURL] = HtmlResponseProviderImpl::GetRedirectResponse(
+      destinationURL, net::HTTP_FOUND);
+  const char kFinalPageContent[] = "testRedirection302 complete";
+  responses[destinationURL] =
+      HtmlResponseProviderImpl::GetSimpleResponse(kFinalPageContent);
+  std::unique_ptr<web::DataResponseProvider> provider(
+      new HtmlResponseProvider(responses));
+  web::test::SetUpHttpServer(std::move(provider));
+
+  // Load first URL and expect destination URL to load.
+  web::shell_test_util::LoadUrl(firstRedirectURL);
+  [[EarlGrey selectElementWithMatcher:addressFieldText(destinationURL.spec())]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText(kFinalPageContent)]
+      assertWithMatcher:grey_notNil()];
+}
+
+@end