Upstream Chrome on iOS source code [10/11].

ios/chrome/browser/web/browsing_egtest.mm

Index: ios/chrome/browser/web/browsing_egtest.mm
diff --git a/ios/chrome/browser/web/browsing_egtest.mm b/ios/chrome/browser/web/browsing_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 <XCTest/XCTest.h>
+#include <map>
+#include <memory>
+#include <string>
+
+#include "base/ios/ios_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/sys_string_conversions.h"
+#include "components/content_settings/core/browser/host_content_settings_map.h"
+#include "components/content_settings/core/common/content_settings.h"
+#include "ios/chrome/browser/content_settings/host_content_settings_map_factory.h"
+#import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
+#include "ios/chrome/browser/ui/commands/ios_command_ids.h"
+#include "ios/chrome/browser/ui/ui_util.h"
+#include "ios/chrome/grit/ios_strings.h"
+#import "ios/chrome/test/app/chrome_test_util.h"
+#include "ios/chrome/test/app/navigation_test_util.h"
+#include "ios/chrome/test/app/web_view_interaction_test_util.h"
+#import "ios/chrome/test/earl_grey/chrome_assertions.h"
+#import "ios/chrome/test/earl_grey/chrome_earl_grey.h"
+#import "ios/chrome/test/earl_grey/chrome_earl_grey_ui.h"
+#import "ios/chrome/test/earl_grey/chrome_matchers.h"
+#import "ios/chrome/test/earl_grey/chrome_test_case.h"
+#import "ios/testing/earl_grey/disabled_test_macros.h"
+#import "ios/testing/wait_util.h"
+#import "ios/web/public/test/earl_grey/web_view_actions.h"
+#import "ios/web/public/test/earl_grey/web_view_matchers.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/data_response_provider.h"
+#include "net/http/http_response_headers.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "url/gurl.h"
+
+using chrome_test_util::omniboxText;
+using chrome_test_util::webViewContainingText;
+
+namespace {
+
+// URL used for the reload test.
+const char kReloadTestUrl[] = "http://mock/reloadTest";
+
+// Returns the number of serviced requests in HTTP body.
+class ReloadResponseProvider : public web::DataResponseProvider {
+ public:
+  ReloadResponseProvider() : request_number_(0) {}
+
+  // URL used for the reload test.
+  static GURL GetReloadTestUrl() {
+    return web::test::HttpServer::MakeUrl(kReloadTestUrl);
+  }
+
+  bool CanHandleRequest(const Request& request) override {
+    return request.url == ReloadResponseProvider::GetReloadTestUrl();
+  }
+
+  void GetResponseHeadersAndBody(
+      const Request& request,
+      scoped_refptr<net::HttpResponseHeaders>* headers,
+      std::string* response_body) override {
+    DCHECK_EQ(ReloadResponseProvider::GetReloadTestUrl(), request.url);
+    *headers = GetDefaultResponseHeaders();
+    *response_body = GetResponseBody(request_number_++);
+  }
+
+  // static
+  static std::string GetResponseBody(int request_number) {
+    return base::StringPrintf("Load request %d", request_number);
+  }
+
+ private:
+  int request_number_;  // Count of requests received by the response provider.
+};
+
+// ScopedBlockPopupsPref modifies the block popups preference and resets the
+// preference to its original value when this object goes out of scope.
+// TODO(crbug.com/638674): Evaluate if this can move to shared code
+class ScopedBlockPopupsPref {
+ public:
+  ScopedBlockPopupsPref(ContentSetting setting) {
+    original_setting_ = GetPrefValue();
+    SetPrefValue(setting);
+  }
+  ~ScopedBlockPopupsPref() { SetPrefValue(original_setting_); }
+
+ private:
+  // Gets the current value of the preference.
+  ContentSetting GetPrefValue() {
+    ContentSetting popupSetting =
+        ios::HostContentSettingsMapFactory::GetForBrowserState(
+            chrome_test_util::GetOriginalBrowserState())
+            ->GetDefaultContentSetting(CONTENT_SETTINGS_TYPE_POPUPS, NULL);
+    return popupSetting;
+  }
+
+  // Sets the preference to the given value.
+  void SetPrefValue(ContentSetting setting) {
+    DCHECK(setting == CONTENT_SETTING_BLOCK ||
+           setting == CONTENT_SETTING_ALLOW);
+    ios::ChromeBrowserState* state =
+        chrome_test_util::GetOriginalBrowserState();
+    ios::HostContentSettingsMapFactory::GetForBrowserState(state)
+        ->SetDefaultContentSetting(CONTENT_SETTINGS_TYPE_POPUPS, setting);
+  }
+
+  // Saves the original pref setting so that it can be restored when the scoper
+  // is destroyed.
+  ContentSetting original_setting_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedBlockPopupsPref);
+};
+}  // namespace
+
+// Tests web browsing scenarios.
+@interface BrowsingTestCase : ChromeTestCase
+@end
+
+@implementation BrowsingTestCase
+
+// Matcher for the title of the current tab (on tablet only).
+id<GREYMatcher> tabWithTitle(const std::string& tab_title) {
+  id<GREYMatcher> notPartOfOmnibox =
+      grey_not(grey_ancestor(chrome_test_util::omnibox()));
+  return grey_allOf(grey_accessibilityLabel(base::SysUTF8ToNSString(tab_title)),
+                    notPartOfOmnibox, nil);
+}
+
+// Tests that page successfully reloads.
+- (void)testReload {
+  // Set up test HTTP server responses.
+  std::unique_ptr<web::DataResponseProvider> provider(
+      new ReloadResponseProvider());
+  web::test::SetUpHttpServer(std::move(provider));
+
+  GURL URL = ReloadResponseProvider::GetReloadTestUrl();
+  [ChromeEarlGrey loadURL:URL];
+  std::string expectedBodyBeforeReload(
+      ReloadResponseProvider::GetResponseBody(0 /* request number */));
+  [[EarlGrey
+      selectElementWithMatcher:webViewContainingText(expectedBodyBeforeReload)]
+      assertWithMatcher:grey_notNil()];
+
+  [ChromeEarlGreyUI reload];
+  std::string expectedBodyAfterReload(
+      ReloadResponseProvider::GetResponseBody(1 /* request_number */));
+  [[EarlGrey
+      selectElementWithMatcher:webViewContainingText(expectedBodyAfterReload)]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that a tab's title is based on the URL when no other information is
+// available.
+- (void)testBrowsingTabTitleSetFromURL {
+  if (!IsIPadIdiom()) {
+    EARL_GREY_TEST_SKIPPED(@"Tab Title not displayed on handset.");
+  }
+
+  web::test::SetUpFileBasedHttpServer();
+
+  const GURL destinationURL = web::test::HttpServer::MakeUrl(
+      "http://ios/testing/data/http_server_files/destination.html");
+  [ChromeEarlGrey loadURL:destinationURL];
+
+  // Add 3 for the "://" which is not considered part of the scheme
+  std::string URLWithoutScheme =
+      destinationURL.spec().substr(destinationURL.scheme().length() + 3);
+
+  [[EarlGrey selectElementWithMatcher:tabWithTitle(URLWithoutScheme)]
+      assertWithMatcher:grey_sufficientlyVisible()];
+}
+
+// Tests that after a PDF is loaded, the title appears in the tab bar on iPad.
+- (void)testPDFLoadTitle {
+  if (!IsIPadIdiom()) {
+    EARL_GREY_TEST_SKIPPED(@"Tab Title not displayed on handset.");
+  }
+
+  web::test::SetUpFileBasedHttpServer();
+
+  const GURL destinationURL = web::test::HttpServer::MakeUrl(
+      "http://ios/testing/data/http_server_files/testpage.pdf");
+  [ChromeEarlGrey loadURL:destinationURL];
+
+  // Add 3 for the "://" which is not considered part of the scheme
+  std::string URLWithoutScheme =
+      destinationURL.spec().substr(destinationURL.scheme().length() + 3);
+
+  [[EarlGrey selectElementWithMatcher:tabWithTitle(URLWithoutScheme)]
+      assertWithMatcher:grey_sufficientlyVisible()];
+}
+
+// Tests that tab title is set to the specified title from a JavaScript.
+- (void)testBrowsingTabTitleSetFromScript {
+  if (!IsIPadIdiom()) {
+    EARL_GREY_TEST_SKIPPED(@"Tab Title not displayed on handset.");
+  }
+
+  const char* kPageTitle = "Some title";
+  const GURL URL = GURL(base::StringPrintf(
+      "data:text/html;charset=utf-8,<script>document.title = "
+      "\"%s\"</script>",
+      kPageTitle));
+  [ChromeEarlGrey loadURL:URL];
+
+  [[EarlGrey selectElementWithMatcher:tabWithTitle(kPageTitle)]
+      assertWithMatcher:grey_sufficientlyVisible()];
+}
+
+// Tests clicking a link with target="_blank" and "event.stopPropagation()"
+// opens a new tab.
+- (void)testBrowsingStopPropagation {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL = web::test::HttpServer::MakeUrl("http://stopPropagation");
+  const GURL destinationURL =
+      web::test::HttpServer::MakeUrl("http://destination");
+  // This is a page with a link to |kDestination|.
+  responses[URL] = base::StringPrintf(
+      "<a id='link' href='%s' target='_blank' "
+      "onclick='event.stopPropagation()'>link</a>",
+      destinationURL.spec().c_str());
+  // This is the destination page; it just contains some text.
+  responses[destinationURL] = "You've arrived!";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  ScopedBlockPopupsPref prefSetter(CONTENT_SETTING_ALLOW);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::AssertMainTabCount(1);
+
+  chrome_test_util::TapWebViewElementWithId("link");
+
+  chrome_test_util::AssertMainTabCount(2);
+
+  // Verify the new tab was opened with the expected URL.
+  [[EarlGrey selectElementWithMatcher:omniboxText(destinationURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests clicking a relative link with target="_blank" and
+// "event.stopPropagation()" opens a new tab.
+- (void)testBrowsingStopPropagationRelativePath {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL = web::test::HttpServer::MakeUrl("http://stopPropRel");
+  const GURL destinationURL =
+      web::test::HttpServer::MakeUrl("http://stopPropRel/#test");
+  // This is page with a relative link to "#test".
+  responses[URL] =
+      "<a id='link' href='#test' target='_blank' "
+      "onclick='event.stopPropagation()'>link</a>";
+  // This is the page that should be showing at the end of the test.
+  responses[destinationURL] = "You've arrived!";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  ScopedBlockPopupsPref prefSetter(CONTENT_SETTING_ALLOW);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::AssertMainTabCount(1);
+
+  chrome_test_util::TapWebViewElementWithId("link");
+
+  chrome_test_util::AssertMainTabCount(2);
+
+  // Verify the new tab was opened with the expected URL.
+  [[EarlGrey selectElementWithMatcher:omniboxText(destinationURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that clicking a link with URL changed by onclick uses the href of the
+// anchor tag instead of the one specified in JavaScript. Also verifies a new
+// tab is opened by target '_blank'.
+- (void)testBrowsingPreventDefaultWithLinkOpenedByJavascript {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL = web::test::HttpServer::MakeUrl(
+      "http://preventDefaultWithLinkOpenedByJavascript");
+  const GURL anchorURL =
+      web::test::HttpServer::MakeUrl("http://anchorDestination");
+  const GURL destinationURL =
+      web::test::HttpServer::MakeUrl("http://javaScriptDestination");
+  // This is a page with a link where the href and JavaScript are setting the
+  // destination to two different URLs so the test can verify which one the
+  // browser uses.
+  responses[URL] = base::StringPrintf(
+      "<a id='link' href='%s' target='_blank' "
+      "onclick='window.location.href=\"%s\"; "
+      "event.stopPropagation()' id='link'>link</a>",
+      anchorURL.spec().c_str(), destinationURL.spec().c_str());
+  responses[anchorURL] = "anchor destination";
+
+  web::test::SetUpSimpleHttpServer(responses);
+
+  ScopedBlockPopupsPref prefSetter(CONTENT_SETTING_ALLOW);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::AssertMainTabCount(1);
+
+  chrome_test_util::TapWebViewElementWithId("link");
+
+  chrome_test_util::AssertMainTabCount(2);
+
+  // Verify the new tab was opened with the expected URL.
+  [[EarlGrey selectElementWithMatcher:omniboxText(anchorURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests tapping a link that navigates to a page that immediately navigates
+// again via document.location.href.
+- (void)testBrowsingWindowDataLinkScriptRedirect {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL =
+      web::test::HttpServer::MakeUrl("http://windowDataLinkScriptRedirect");
+  const GURL intermediateURL =
+      web::test::HttpServer::MakeUrl("http://intermediate");
+  const GURL destinationURL =
+      web::test::HttpServer::MakeUrl("http://destination");
+  // This is a page with a link to the intermediate page.
+  responses[URL] =
+      base::StringPrintf("<a id='link' href='%s' target='_blank'>link</a>",
+                         intermediateURL.spec().c_str());
+  // This intermediate page uses JavaScript to immediately navigate to the
+  // destination page.
+  responses[intermediateURL] =
+      base::StringPrintf("<script>document.location.href=\"%s\"</script>",
+                         destinationURL.spec().c_str());
+  // This is the page that should be showing at the end of the test.
+  responses[destinationURL] = "You've arrived!";
+
+  web::test::SetUpSimpleHttpServer(responses);
+
+  ScopedBlockPopupsPref prefSetter(CONTENT_SETTING_ALLOW);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::AssertMainTabCount(1);
+
+  chrome_test_util::TapWebViewElementWithId("link");
+
+  chrome_test_util::AssertMainTabCount(2);
+
+  // Verify the new tab was opened with the expected URL.
+  [[EarlGrey selectElementWithMatcher:omniboxText(destinationURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that pressing the button on a POST-based form changes the page and that
+// the back button works as expected afterwards.
+- (void)testBrowsingPostEntryWithButton {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL = web::test::HttpServer::MakeUrl("http://postEntryWithButton");
+  const GURL destinationURL = web::test::HttpServer::MakeUrl("http://foo");
+  // This is a page with a button that posts to the destination.
+  responses[URL] = base::StringPrintf(
+      "<form action='%s' method='post'>"
+      "<input value='button' type='submit' id='button'></form>",
+      destinationURL.spec().c_str());
+  // This is the page that should be showing at the end of the test.
+  responses[destinationURL] = "bar!";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::TapWebViewElementWithId("button");
+
+  [[EarlGrey selectElementWithMatcher:omniboxText(destinationURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  // Go back and verify the browser navigates to the original URL.
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(URL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that a link with a JavaScript-based navigation changes the page and
+// that the back button works as expected afterwards.
+- (void)testBrowsingJavaScriptBasedNavigation {
+  std::map<GURL, std::string> responses;
+  const GURL URL = web::test::HttpServer::MakeUrl("http://origin");
+  const GURL destURL = web::test::HttpServer::MakeUrl("http://destination");
+  // Page containing a link with onclick attribute that sets window.location
+  // to the destination URL.
+  responses[URL] = base::StringPrintf(
+      "<a href='#' onclick=\"window.location='%s';\" id='link'>Link</a>",
+      destURL.spec().c_str());
+  // Page with some text.
+  responses[destURL] = "You've arrived!";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  [ChromeEarlGrey loadURL:URL];
+  chrome_test_util::TapWebViewElementWithId("link");
+
+  [[EarlGrey selectElementWithMatcher:omniboxText(destURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(URL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// TODO(crbug.com/638674): Evaluate if this can move to shared code
+// Navigates back to the previous webpage.
+- (void)goBack {
+  base::scoped_nsobject<GenericChromeCommand> backCommand(
+      [[GenericChromeCommand alloc] initWithTag:IDC_BACK]);
+  chrome_test_util::RunCommandWithActiveViewController(backCommand);
+
+  [ChromeEarlGrey waitForPageToFinishLoading];
+}
+
+// Navigates forward to a previous webpage.
+// TODO(crbug.com/638674): Evaluate if this can move to shared code
+- (void)goForward {
+  base::scoped_nsobject<GenericChromeCommand> forwardCommand(
+      [[GenericChromeCommand alloc] initWithTag:IDC_FORWARD]);
+  chrome_test_util::RunCommandWithActiveViewController(forwardCommand);
+
+  [ChromeEarlGrey waitForPageToFinishLoading];
+}
+
+// Tests that a link with WebUI URL does not trigger a load. WebUI pages may
+// have increased power and using the same web process (which may potentially
+// be controlled by an attacker) is dangerous.
+- (void)testTapLinkWithWebUIURL {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL(web::test::HttpServer::MakeUrl("http://pageWithWebUILink"));
+  const char kPageHTML[] =
+      "<script>"
+      "  function printMsg() {"
+      "    document.body.appendChild(document.createTextNode('Hello world!'));"
+      "  }"
+      "</script>"
+      "<a href='chrome://version' id='link' onclick='printMsg()'>Version</a>";
+  responses[URL] = kPageHTML;
+  web::test::SetUpSimpleHttpServer(responses);
+
+  // Assert that test is starting with one tab.
+  chrome_test_util::AssertMainTabCount(1U);
+  chrome_test_util::AssertIncognitoTabCount(0U);
+
+  [ChromeEarlGrey loadURL:URL];
+
+  // Tap on chrome://version link.
+  [ChromeEarlGrey tapWebViewElementWithID:@"link"];
+
+  // Verify that page did not change by checking its URL and message printed by
+  // onclick event.
+  [[EarlGrey selectElementWithMatcher:omniboxText("chrome://version")]
+      assertWithMatcher:grey_nil()];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText("Hello world!")]
+      assertWithMatcher:grey_notNil()];
+
+  // Verify that no new tabs were open which could load chrome://version.
+  chrome_test_util::AssertMainTabCount(1U);
+}
+
+// Tests that pressing the button on a POST-based form with same-page action
+// does not change the page and that the back button works as expected
+// afterwards.
+- (void)testBrowsingPostToSamePage {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL firstURL = web::test::HttpServer::MakeUrl("http://first");
+  const GURL formURL = web::test::HttpServer::MakeUrl("http://form");
+  // This is just a page with some text.
+  responses[firstURL] = "foo";
+  // This is a page with at button that posts to the current URL.
+  responses[formURL] =
+      "<form method='post'>"
+      "<input value='button' type='submit' id='button'></form>";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  // Open the first URL so it's in history.
+  [ChromeEarlGrey loadURL:firstURL];
+
+  // Open the second URL, tap the button, and verify the browser navigates to
+  // the expected URL.
+  [ChromeEarlGrey loadURL:formURL];
+  chrome_test_util::TapWebViewElementWithId("button");
+  [[EarlGrey selectElementWithMatcher:omniboxText(formURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  // Go back once and verify the browser navigates to the form URL.
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(formURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  // Go back a second time and verify the browser navigates to the first URL.
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(firstURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that evaluating user JavaScript that causes navigation correctly
+// modifies history.
+- (void)testBrowsingUserJavaScriptNavigation {
+  // TODO(crbug.com/640220): Keyboard entry inside the omnibox fails only on
+  // iPad running iOS 10.
+  if (IsIPadIdiom() && base::ios::IsRunningOnIOS10OrLater())
+    return;
+
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL startURL = web::test::HttpServer::MakeUrl("http://startpage");
+  responses[startURL] = "<html><body><p>Ready to begin.</p></body></html>";
+  const GURL targetURL = web::test::HttpServer::MakeUrl("http://targetpage");
+  responses[targetURL] = "<html><body><p>You've arrived!</p></body></html>";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  // Load the first page and run JS (using the codepath that user-entered JS in
+  // the omnibox would take, not page-triggered) that should navigate.
+  [ChromeEarlGrey loadURL:startURL];
+
+  NSString* script =
+      [NSString stringWithFormat:@"javascript:window.location='%s'",
+                                 targetURL.spec().c_str()];
+  [[EarlGrey selectElementWithMatcher:chrome_test_util::omnibox()]
+      performAction:grey_typeText(script)];
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityID(@"Go")]
+      performAction:grey_tap()];
+  [ChromeEarlGrey waitForPageToFinishLoading];
+
+  [[EarlGrey selectElementWithMatcher:omniboxText(targetURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(startURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that evaluating non-navigation user JavaScript doesn't affect history.
+- (void)testBrowsingUserJavaScriptWithoutNavigation {
+  // TODO(crbug.com/640220): Keyboard entry inside the omnibox fails only on
+  // iPad running iOS 10.
+  if (IsIPadIdiom() && base::ios::IsRunningOnIOS10OrLater())
+    return;
+
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL firstURL = web::test::HttpServer::MakeUrl("http://firstURL");
+  const std::string firstResponse = "Test Page 1";
+  const GURL secondURL = web::test::HttpServer::MakeUrl("http://secondURL");
+  const std::string secondResponse = "Test Page 2";
+  responses[firstURL] = firstResponse;
+  responses[secondURL] = secondResponse;
+  web::test::SetUpSimpleHttpServer(responses);
+
+  [ChromeEarlGrey loadURL:firstURL];
+  [ChromeEarlGrey loadURL:secondURL];
+
+  // Execute some JavaScript in the omnibox.
+  [[EarlGrey selectElementWithMatcher:chrome_test_util::omnibox()]
+      performAction:grey_typeText(@"javascript:document.write('foo')")];
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityID(@"Go")]
+      performAction:grey_tap()];
+
+  id<GREYMatcher> webView = chrome_test_util::webViewContainingText("foo");
+  [[EarlGrey selectElementWithMatcher:webView] assertWithMatcher:grey_notNil()];
+
+  // Verify that the JavaScript did not affect history by going back and then
+  // forward again.
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(firstURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+  [self goForward];
+  [[EarlGrey selectElementWithMatcher:omniboxText(secondURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+// Tests that submitting a POST-based form by tapping the 'Go' button on the
+// keyboard navigates to the correct URL and the back button works as expected
+// afterwards.
+// TODO(crbug.com/670380): Enable this test on device.
+#if TARGET_IPHONE_SIMULATOR
+#define MAYBE_testBrowsingPostEntryWithKeyboard \
+  testBrowsingPostEntryWithKeyboard
+#else
+#define MAYBE_testBrowsingPostEntryWithKeyboard \
+  FLAKY_testBrowsingPostEntryWithKeyboard
+#endif
+- (void)MAYBE_testBrowsingPostEntryWithKeyboard {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL URL =
+      web::test::HttpServer::MakeUrl("http://postEntryWithKeyboard");
+  const GURL destinationURL = web::test::HttpServer::MakeUrl("http://foo");
+  // This is a page this an input text field and a button that posts to the
+  // destination.
+  responses[URL] = base::StringPrintf(
+      "hello!"
+      "<form action='%s' method='post'>"
+      "<input value='textfield' id='textfield' type='text'></label>"
+      "<input type='submit'></form>",
+      destinationURL.spec().c_str());
+  // This is the page that should be showing at the end of the test.
+  responses[destinationURL] = "baz!";
+  web::test::SetUpSimpleHttpServer(responses);
+
+  // Open the URL, focus the textfield,and submit via keyboard.
+  [ChromeEarlGrey loadURL:URL];
+  [[EarlGrey selectElementWithMatcher:webViewContainingText("hello!")]
+      assertWithMatcher:grey_notNil()];
+
+  web::WebState* currentWebState = chrome_test_util::GetCurrentWebState();
+  [[EarlGrey selectElementWithMatcher:web::webViewInWebState(currentWebState)]
+      performAction:web::webViewTapElement(currentWebState, "textfield")];
+
+  // Disable EarlGrey's synchronization since it is blocked by opening the
+  // keyboard from a web view.
+  [[GREYConfiguration sharedInstance]
+          setValue:@NO
+      forConfigKey:kGREYConfigKeySynchronizationEnabled];
+
+  // Wait until the keyboard shows up before tapping.
+  GREYCondition* condition = [GREYCondition
+      conditionWithName:@"Wait for the keyboard to show up."
+                  block:^BOOL {
+                    NSError* error = nil;
+                    [[EarlGrey
+                        selectElementWithMatcher:grey_accessibilityID(@"Go")]
+                        assertWithMatcher:grey_notNil()
+                                    error:&error];
+                    return (error == nil);
+                  }];
+  GREYAssert([condition waitWithTimeout:10],
+             @"No keyboard with 'Go' button showed up.");
+
+  [[EarlGrey selectElementWithMatcher:grey_accessibilityID(@"Go")]
+      performAction:grey_tap()];
+
+  // Reenable synchronization now that the keyboard has been closed.
+  [[GREYConfiguration sharedInstance]
+          setValue:@YES
+      forConfigKey:kGREYConfigKeySynchronizationEnabled];
+
+  // Verify that the browser navigates to the expected URL.
+  [[EarlGrey selectElementWithMatcher:omniboxText(destinationURL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+
+  // Go back and verify that the browser navigates to the original URL.
+  [self goBack];
+  [[EarlGrey selectElementWithMatcher:omniboxText(URL.GetContent())]
+      assertWithMatcher:grey_notNil()];
+}
+
+@end