[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
new file mode 100644
index 0000000000000000000000000000000000000000..8dbc19929b7ca39be314af726f2c13b3a18d4c5a
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+++ b/ios/web/shell/test/redirect_egtest.mm
@@ -0,0 +1,108 @@
+// 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 forst URL and expect destination URL to load.

[baxley, 2016/07/28 22:06:37]

typo: s/forst/first

[Eugene But (OOO till 7-30), 2016/07/28 22:13:35]

Done.

+  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 {

[baxley, 2016/07/28 22:06:37]

What is the purpose of this test? Does the previous one cover the same thing?

Or is the purpose to see if simple redirects work, but multiple fail? If that's
valuable, then I think it's fine to have both tests.

[Eugene But (OOO till 7-30), 2016/07/28 22:13:35]

I think redirect chain is more complex flow and it is still interesting to know
if the problem is related to a single 301 redirect or to a redirect chain.

+  // 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 forst URL and expect destination URL to load.

[baxley, 2016/07/28 22:06:37]

typo: first

[Eugene But (OOO till 7-30), 2016/07/28 22:13:35]

Done.

+  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[] = "testRedirection301 complete";

[baxley, 2016/07/28 22:06:37]

s/301/302 ?

[Eugene But (OOO till 7-30), 2016/07/28 22:13:35]

Done.

+  responses[destinationURL] =
+      HtmlResponseProviderImpl::GetSimpleResponse(kFinalPageContent);
+  std::unique_ptr<web::DataResponseProvider> provider(
+      new HtmlResponseProvider(responses));
+  web::test::SetUpHttpServer(std::move(provider));
+
+  // Load forst URL and expect destination URL to load.

[baxley, 2016/07/28 22:06:37]

first! :)

[Eugene But (OOO till 7-30), 2016/07/28 22:13:35]

Done.

+  web::shell_test_util::LoadUrl(firstRedirectURL);
+  [[EarlGrey selectElementWithMatcher:addressFieldText(destinationURL.spec())]
+      assertWithMatcher:grey_notNil()];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText(kFinalPageContent)]
+      assertWithMatcher:grey_notNil()];
+}
+
+@end