[iOS] Add SSL tests

Add tests to load bad SSL pages and navigate back/forward/proceed.

Bug: none
Change-Id: I69ca6998a4477515ac63ad201ef7bc6491c8ddeb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2618138
Commit-Queue: Gauthier Ambard <gambard@chromium.org>
Auto-Submit: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Ali Juma <ajuma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841555}

ios/chrome/browser/web/ssl_egtest.mm

@@ -5,6 +5,7 @@
 #include "base/bind.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey.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/earl_grey_test.h"
 #include "ios/testing/embedded_test_server_handlers.h"
@@ -38,11 +39,7 @@
   _HTTPSServer = std::make_unique<net::test_server::EmbeddedTestServer>(
       net::test_server::EmbeddedTestServer::TYPE_HTTPS);
   RegisterDefaultHandlers(_HTTPSServer.get());
-}
 
-// Test loading a page with a bad SSL certificate from the NTP, to avoid
-// https://crbug.com/1067250 from regressing.
-- (void)testBadSSLOnNTP {
   GREYAssertTrue(_HTTPSServer->Start(), @"Test server failed to start.");
 
   const GURL pageURL = _HTTPSServer->GetURL("/echo");
@@ -52,17 +49,43 @@
                                                     IDS_SSL_V2_HEADING)];
 }
 
-// Test loading a page with a bad SSL certificate during session restore, to
-// avoid regressing https://crbug.com/1050808.
-- (void)testBadSSLInSessionRestore {
-  GREYAssertTrue(_HTTPSServer->Start(), @"Test server failed to start.");
+// Tests loading a bad ssl page and tapping "proceed".
+- (void)testProceedToBadSSL {
+  // Tap on the "Proceed" link and verify that we go to the unsafe page.
+  [ChromeEarlGrey tapWebStateElementWithID:@"details-button"];
+  [ChromeEarlGrey tapWebStateElementWithID:@"proceed-link"];
+  [ChromeEarlGrey waitForWebStateContainingText:"Echo"];
+}
+
+// Tests loading a bad ssl page and tapping "Back to safety". The bad ssl page
+// is loaded from the NTP to prevent https://crbug.com/1067250 from regressing.
+- (void)testBackToSafetyFromBadSSL {
+  // Tap on the "Back to safety" link and verify that we go to the NTP.
+  [ChromeEarlGrey tapWebStateElementWithID:@"primary-button"];
+  [[EarlGrey selectElementWithMatcher:chrome_test_util::FakeOmnibox()]
+      assertWithMatcher:grey_sufficientlyVisible()];
+}
+
+// Tests loading a BadSSL URL then a good URL then pressing back to navigates
+// back to the BadSSL URL is showing the warning.
+- (void)testNavigateBackToBadSSL {
+  // Load a server without SSL issues.
+  GREYAssertTrue(self.testServer->Start(), @"Test server failed to start.");
 
-  GURL pageURL = _HTTPSServer->GetURL("/echo");
+  const GURL pageURL = self.testServer->GetURL("/echo");
   [ChromeEarlGrey loadURL:pageURL];
 
+  [ChromeEarlGrey waitForWebStateContainingText:"Echo"];
+
+  // Navigate back to the bad SSL page.
+  [ChromeEarlGrey goBack];
   [ChromeEarlGrey waitForWebStateContainingText:l10n_util::GetStringUTF8(
                                                     IDS_SSL_V2_HEADING)];
+}
 
+// Test loading a page with a bad SSL certificate during session restore, to
+// avoid regressing https://crbug.com/1050808.
+- (void)testBadSSLInSessionRestore {
   [ChromeEarlGrey triggerRestoreViaTabGridRemoveAllUndo];
   [ChromeEarlGrey waitForWebStateContainingText:l10n_util::GetStringUTF8(
                                                     IDS_SSL_V2_HEADING)];