Created a test for window.location.reload().

ios/web/navigation/window_location_inttest.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 "base/mac/bind_objc_block.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/ios/wait_util.h"
 #include "ios/web/public/navigation_item.h"
@@ skipping 23 matching lines @@
 //   present on the page.  This string is added to the page in the onload event
 //   and is removed once a button is tapped.  Verifying that the onload text is
 //   visible after tapping a button is equivalent to checking that a load has
 //   occurred as the result of the button tap.
 const char kWindowLocationTestURL[] =
     "http://ios/testing/data/http_server_files/window_location.html";
 
 // Button IDs used in the window.location test page.
 const char kWindowLocationAssignID[] = "location-assign";
 const char kWindowLocationReplaceID[] = "location-replace";
+const char kWindowLocationReloadID[] = "location-reload";
 
 // JavaScript functions on the window.location test page.
 const char kUpdateURLScriptFormat[] = "updateUrlToLoadText('%s')";
 const char kGetURLScript[] = "getUrl()";
 const char kOnLoadCheckScript[] = "isOnLoadTextVisible()";
 
 // URL of a sample file-based page.
 const char kSampleFileBasedURL[] =
     "http://ios/testing/data/http_server_files/chromium_logo_page.html";
 
@@ skipping 224 matching lines @@
   ExpectPageLoad(about_blank);
   SetWindowLocationUrl(unresolvable_url);
   ASSERT_TRUE(web::test::TapWebViewElementWithId(web_state(),
                                                  kWindowLocationReplaceID));
   WaitForPageToLoad();
 
   // Verify that about:blank was actually loaded.
   EXPECT_EQ(about_blank,
             navigation_manager()->GetLastCommittedItem()->GetURL());
 }
+
+// Tests that calling window.location.reload() causes an onload event to occur.
+TEST_F(WindowLocationTest, WindowLocationReload) {
+  // Tap the window.location.reload() button.
+  ExpectPageLoad(window_location_url());
+  ASSERT_TRUE(
+      web::test::TapWebViewElementWithId(web_state(), kWindowLocationReloadID));
+  WaitForPageToLoad();
+
+  // Verify that |kOnLoadText| is displayed and that no additional
+  // NavigationItems are added.
+  EXPECT_TRUE(IsOnLoadTextVisible());
+  EXPECT_EQ(1, (NSInteger)navigation_manager()->GetItemCount());

[Eugene But (OOO till 7-30), 2016/12/23 01:57:34]

Please don't use C-style casting, also this would probably work for you:
EXPECT_EQ(1U, navigation_manager()->GetItemCount());

[kkhorimoto, 2017/01/20 00:38:20]

Done.

+}