// 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 "apps/moterm/key_util.h"

#include <string>

#include "mojo/services/input_events/public/interfaces/input_events.mojom.h"
#include "mojo/services/input_events/public/interfaces/input_key_codes.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

// Makes a key event. Note that this cheats in a number of respects.
// TODO(vtl): Add a |flags| argument when |GetInputSequenceForKeyPressedEvent()|
// actually uses it.
mojo::EventPtr MakeKeyEvent(bool is_char,
                            char character,
                            mojo::KeyboardCode windows_key_code) {
  uint16_t character16 = static_cast<unsigned char>(character);

  mojo::EventPtr ev = mojo::Event::New();
  ev->action = mojo::EVENT_TYPE_KEY_PRESSED;
  ev->flags = mojo::EVENT_FLAGS_NONE;  // Cheat.
  ev->time_stamp = 1234567890LL;
  ev->key_data = mojo::KeyData::New();
  ev->key_data->key_code = 0;  // Cheat.
  ev->key_data->is_char = is_char;
  ev->key_data->character = character16;
  ev->key_data->windows_key_code = windows_key_code;
  ev->key_data->native_key_code = 0;
  ev->key_data->text = character16;             // Cheat.
  ev->key_data->unmodified_text = character16;  // Cheat.
  return ev;
}

TEST(KeyUtilTest, RegularChars) {
  // Only handles character events.
  EXPECT_EQ(std::string(), GetInputSequenceForKeyPressedEvent(
                               *MakeKeyEvent(false, 0, mojo::KEYBOARD_CODE_A)));

  EXPECT_EQ("A", GetInputSequenceForKeyPressedEvent(
                     *MakeKeyEvent(true, 'A', mojo::KEYBOARD_CODE_A)));
  EXPECT_EQ("a", GetInputSequenceForKeyPressedEvent(
                     *MakeKeyEvent(true, 'a', mojo::KEYBOARD_CODE_A)));
  EXPECT_EQ("0", GetInputSequenceForKeyPressedEvent(
                     *MakeKeyEvent(true, '0', mojo::KEYBOARD_CODE_NUM_0)));
  EXPECT_EQ("!", GetInputSequenceForKeyPressedEvent(
                     *MakeKeyEvent(true, '!', mojo::KEYBOARD_CODE_NUM_0)));
  EXPECT_EQ("\t", GetInputSequenceForKeyPressedEvent(
                      *MakeKeyEvent(true, '\t', mojo::KEYBOARD_CODE_TAB)));
  EXPECT_EQ("\r", GetInputSequenceForKeyPressedEvent(
                      *MakeKeyEvent(true, '\r', mojo::KEYBOARD_CODE_RETURN)));
}

TEST(KeyUtilTest, SpecialChars) {
  // Backspace should send DEL.
  EXPECT_EQ("\x7f", GetInputSequenceForKeyPressedEvent(
                        *MakeKeyEvent(true, 0, mojo::KEYBOARD_CODE_BACK)));
  EXPECT_EQ("\x1b", GetInputSequenceForKeyPressedEvent(
                        *MakeKeyEvent(true, 0, mojo::KEYBOARD_CODE_ESCAPE)));
  // Some multi-character results:
  EXPECT_EQ("\x1b[5~", GetInputSequenceForKeyPressedEvent(
                           *MakeKeyEvent(true, 0, mojo::KEYBOARD_CODE_PRIOR)));
  EXPECT_EQ("\x1b[C", GetInputSequenceForKeyPressedEvent(
                          *MakeKeyEvent(true, 0, mojo::KEYBOARD_CODE_RIGHT)));
}

}  // namespace