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

ios/chrome/browser/web/js_print_egtest.mm

+// 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 <XCTest/XCTest.h>
+#include <map>
+
+#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/web/public/test/http_server.h"
+#import "ios/web/public/test/http_server_util.h"
+
+using chrome_test_util::webViewContainingText;
+
+// Test case for bringing up the print dialog when a web site's JavaScript runs
+// "window.print".
+@interface JSPrintTestCase : ChromeTestCase
+@end
+
+@implementation JSPrintTestCase
+
+// Tests that tapping a button with onclick='window.print' brings up the
+// print dialog.
+- (void)testWebPrintButton {
+  // Create map of canned responses and set up the test HTML server.
+  std::map<GURL, std::string> responses;
+  const GURL testURL = web::test::HttpServer::MakeUrl("http://printpage");
+
+  // Page containing button with onclick attribute calling window.print.
+  responses[testURL] =
+      "<input onclick='window.print();' type='button' id=\"printButton\" "
+      "value='Print Page' />";
+
+  web::test::SetUpSimpleHttpServer(responses);
+  [ChromeEarlGrey loadURL:testURL];
+
+  // Tap print button.
+  [ChromeEarlGrey tapWebViewElementWithID:@"printButton"];
+
+  // Test if print dialog appeared.
+  id<GREYMatcher> printerOption = grey_allOf(
+      grey_accessibilityLabel(@"Printer Options"),
+      grey_not(grey_accessibilityTrait(UIAccessibilityTraitHeader)), nil);
+  [[EarlGrey selectElementWithMatcher:printerOption]
+      assertWithMatcher:grey_sufficientlyVisible()];
+
+  // Clean up and close print dialog.
+  id<GREYMatcher> cancelButton =
+      grey_allOf(grey_accessibilityLabel(@"Cancel"),
+                 grey_accessibilityTrait(UIAccessibilityTraitButton), nil);
+  [[EarlGrey selectElementWithMatcher:cancelButton] performAction:grey_tap()];
+}
+
+@end