Revert of Proposed alternative for supporting ChromeVox keyboard commands.

chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter_unittest.cc

-// 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.
-
-#include "ash/shell.h"
-#include "ash/test/ash_test_base.h"
-#include "chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_tree_host.h"
-#include "ui/events/event.h"
-#include "ui/events/event_constants.h"
-#include "ui/events/keycodes/keyboard_codes.h"
-#include "ui/events/test/event_generator.h"
-
-// Records all key events.
-class EventCapturer : public ui::EventHandler {
- public:
-  EventCapturer() {}
-  ~EventCapturer() override {}
-
-  void Reset() { events_.clear(); }
-
-  void OnEvent(ui::Event* event) override {
-    if (event->IsKeyEvent())
-      events_.push_back(new ui::KeyEvent(static_cast<ui::KeyEvent&>(*event)));
-  }
-
-  const ScopedVector<ui::KeyEvent>& captured_events() const { return events_; }
-
- private:
-  ScopedVector<ui::KeyEvent> events_;
-
-  DISALLOW_COPY_AND_ASSIGN(EventCapturer);
-};
-
-class SpokenFeedbackEventRewriterTest
-    : public ash::test::AshTestBase,
-      public SpokenFeedbackEventRewriterDelegate {
- public:
-  SpokenFeedbackEventRewriterTest()
-      : spoken_feedback_event_rewriter_(new SpokenFeedbackEventRewriter(this)),
-        is_spoken_feedback_enabled_(false),
-        dispatch_result_(false) {}
-
-  void SetUp() override {
-    ash::test::AshTestBase::SetUp();
-    CurrentContext()->AddPreTargetHandler(&event_capturer_);
-    CurrentContext()->GetHost()->GetEventSource()->AddEventRewriter(
-        spoken_feedback_event_rewriter_.get());
-    generator_.reset(new ui::test::EventGenerator(CurrentContext()));
-  }
-
-  void TearDown() override {
-    generator_.reset();
-    CurrentContext()->GetHost()->GetEventSource()->RemoveEventRewriter(
-        spoken_feedback_event_rewriter_.get());
-    CurrentContext()->RemovePreTargetHandler(&event_capturer_);
-    ash::test::AshTestBase::TearDown();
-  }
-
- protected:
-  scoped_ptr<ui::test::EventGenerator> generator_;
-  EventCapturer event_capturer_;
-
-  void set_is_spoken_feedback_enabled(bool enabled) {
-    is_spoken_feedback_enabled_ = enabled;
-  }
-
-  void set_dispatch_result(bool result) { dispatch_result_ = result; }
-
- private:
-  // SpokenFeedbackEventRewriterDelegate:
-  bool IsSpokenFeedbackEnabled() const override {
-    return is_spoken_feedback_enabled_;
-  }
-
-  bool DispatchKeyToChromeVox(ui::KeyEvent key_event) override {
-    return dispatch_result_;
-  }
-
-  scoped_ptr<SpokenFeedbackEventRewriter> spoken_feedback_event_rewriter_;
-  bool is_spoken_feedback_enabled_;
-  bool dispatch_result_;
-
-  DISALLOW_COPY_AND_ASSIGN(SpokenFeedbackEventRewriterTest);
-};
-
-TEST_F(SpokenFeedbackEventRewriterTest, PressAndReleaseCvoxKeys) {
-  // Mock ChromeVox enabled.
-  set_is_spoken_feedback_enabled(true);
-
-  // Send Search+Shift.
-  generator_->PressKey(ui::VKEY_LWIN, ui::EF_COMMAND_DOWN);
-  ASSERT_EQ(1U, event_capturer_.captured_events().size());
-  generator_->PressKey(ui::VKEY_SHIFT, ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  ASSERT_EQ(2U, event_capturer_.captured_events().size());
-
-  // Mock successful commands lookup and dispatch.
-  set_dispatch_result(true);
-
-  // Send the right arrow key, which gets successfully looked up and dispatched
-  // as a ChromeVox command, so the event gets discarded.
-  generator_->PressKey(ui::VKEY_RIGHT, ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  ASSERT_EQ(2U, event_capturer_.captured_events().size());
-
-  event_capturer_.Reset();
-
-  // Released keys previously captured get eaten even without successful
-  // dispatch.
-  set_dispatch_result(false);
-  generator_->ReleaseKey(ui::VKEY_RIGHT,
-                         ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  ASSERT_EQ(0U, event_capturer_.captured_events().size());
-
-  // Modifiers were not discarded, so we let them continue.
-  generator_->ReleaseKey(ui::VKEY_SHIFT, ui::EF_COMMAND_DOWN);
-  generator_->ReleaseKey(ui::VKEY_LWIN, 0);
-  ASSERT_EQ(2U, event_capturer_.captured_events().size());
-}
-
-TEST_F(SpokenFeedbackEventRewriterTest, KeysNotEatenWithChromeVoxDisabled) {
-  // Send Search+Shift+Right.
-  generator_->PressKey(ui::VKEY_LWIN, ui::EF_COMMAND_DOWN);
-  ASSERT_EQ(1U, event_capturer_.captured_events().size());
-  generator_->PressKey(ui::VKEY_SHIFT, ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  ASSERT_EQ(2U, event_capturer_.captured_events().size());
-
-  // Mock successful commands lookup and dispatch; shouldn't matter either way.
-  set_dispatch_result(true);
-  generator_->PressKey(ui::VKEY_RIGHT, ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  ASSERT_EQ(3U, event_capturer_.captured_events().size());
-
-  // Released keys shouldn't get eaten.
-  set_dispatch_result(false);
-  generator_->ReleaseKey(ui::VKEY_RIGHT,
-                         ui::EF_COMMAND_DOWN | ui::EF_SHIFT_DOWN);
-  generator_->ReleaseKey(ui::VKEY_SHIFT, ui::EF_COMMAND_DOWN);
-  generator_->ReleaseKey(ui::VKEY_LWIN, 0);
-  ASSERT_EQ(6U, event_capturer_.captured_events().size());
-
-  // Try releasing more keys.
-  generator_->ReleaseKey(ui::VKEY_RIGHT, 0);
-  generator_->ReleaseKey(ui::VKEY_SHIFT, 0);
-  generator_->ReleaseKey(ui::VKEY_LWIN, 0);
-  ASSERT_EQ(9U, event_capturer_.captured_events().size());
-}