MacViews: Fix GlobalKeyboardShortcutsTest.SwitchTabsMac.

chrome/browser/global_keyboard_shortcuts_mac_browsertest.mm

 // Copyright 2015 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 "chrome/browser/global_keyboard_shortcuts_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/run_loop.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "ui/base/accelerators/accelerator.h"
 #import "ui/events/test/cocoa_test_event_utils.h"
+#include "ui/events/test/event_generator.h"
+#include "ui/views/test/event_generator_delegate_mac.h"

[tapted, 2016/11/28 08:14:18]

I've been trying to avoid introducing ui/views dependencies in the existing
Cocoa codebase -- see the comments in chrome/browser/ui/cocoa/DEPS

[themblsha, 2016/11/30 12:35:33]

I thought about doing a local function that does performKeyEquivalent: /
sendEvent: locally at first but decided that a more general approach would by
DRYer.

Removed the dependency, but left the event_generator code intact, as it would
still be useful if some other code needs to invoke Cmd+{/} inside a test, and it
would provide a more realistic code coverage.

 
 using cocoa_test_event_utils::SynthesizeKeyEvent;
 
 using GlobalKeyboardShortcutsTest = ExtensionBrowserTest;
 
+namespace {
+
+void PressAccelerator(ui::test::EventGenerator* event_generator,
+                      const ui::Accelerator& accelerator) {
+  event_generator->PressKey(accelerator.key_code(), accelerator.modifiers());
+  event_generator->ReleaseKey(accelerator.key_code(), accelerator.modifiers());
+}
+
+}  // namespace
+
 // Test that global keyboard shortcuts are handled by the native window.
 IN_PROC_BROWSER_TEST_F(GlobalKeyboardShortcutsTest, SwitchTabsMac) {
   NSWindow* ns_window = browser()->window()->GetNativeWindow();
   TabStripModel* tab_strip = browser()->tab_strip_model();
 
   // Set up window with 2 tabs.
   chrome::NewTab(browser());
   EXPECT_EQ(2, tab_strip->count());
   EXPECT_TRUE(tab_strip->IsTabSelected(1));
 
+  views::test::InitializeMacEventGeneratorDelegate();
+  ui::test::EventGenerator event_generator(ns_window);
+  event_generator.set_target(ui::test::EventGenerator::Target::WINDOW);
+
   // Ctrl+Tab goes to the next tab, which loops back to the first tab.
-  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
-      ns_window, true, ui::VKEY_TAB, NSControlKeyMask)];
+  PressAccelerator(&event_generator,
+                   ui::Accelerator(ui::VKEY_TAB, ui::EF_CONTROL_DOWN));
   EXPECT_TRUE(tab_strip->IsTabSelected(0));
 
   // Cmd+2 goes to the second tab.
-  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
-      ns_window, true, ui::VKEY_2, NSCommandKeyMask)];
+  PressAccelerator(&event_generator,
+                   ui::Accelerator(ui::VKEY_2, ui::EF_COMMAND_DOWN));
   EXPECT_TRUE(tab_strip->IsTabSelected(1));
 
   // Cmd+{ goes to the previous tab.
-  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
-      ns_window, true, ui::VKEY_OEM_4, NSShiftKeyMask | NSCommandKeyMask)];
+  PressAccelerator(
+      &event_generator,
+      ui::Accelerator(ui::VKEY_OEM_4, ui::EF_SHIFT_DOWN | ui::EF_COMMAND_DOWN));
   EXPECT_TRUE(tab_strip->IsTabSelected(0));
 }