1# Copyright 2015 The Chromium OS Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import logging
6
7from autotest_lib.client.common_lib import error
8from autotest_lib.client.common_lib.cros import chrome
9from autotest_lib.client.cros import touch_playback_test_base
10
11
12class touch_TouchscreenTaps(touch_playback_test_base.touch_playback_test_base):
13    """Checks that touchscreen presses are translated into clicks."""
14    version = 1
15
16    _CLICK_NAME = 'tap'
17
18
19    def _check_for_click(self):
20        """Playback and check whether click occurred.  Fail if not.
21
22        @raises: TestFail if no click occurred.
23
24        """
25        self._events.clear_previous_events()
26        self._blocking_playback(filepath=self._filepaths[self._CLICK_NAME],
27                                touch_type='touchscreen')
28        self._events.wait_for_events_to_complete()
29
30        actual_count = self._events.get_click_count()
31        if actual_count is not 1:
32            self._events.log_events()
33            raise error.TestFail('Saw %d clicks!' % actual_count)
34
35
36    def _is_testable(self):
37        """Return True if test can run on this device, else False.
38
39        @raises: TestError if host has no touchscreen.
40
41        """
42        # Raise error if no touchscreen detected.
43        if not self._has_touchscreen:
44            raise error.TestError('No touchscreen found on this device!')
45
46        # Check if playback files are available on DUT to run test.
47        self._filepaths = self._find_test_files(
48                'touchscreen', [self._CLICK_NAME])
49        if not self._filepaths:
50            logging.info('Missing gesture files, Aborting test.')
51            return False
52
53        return True
54
55
56    def run_once(self):
57        """Entry point of this test."""
58        if not self._is_testable():
59            return
60
61        # Log in and start test.
62        with chrome.Chrome(init_network_controller=True) as cr:
63            self._open_events_page(cr)
64            self._events.set_prevent_defaults(False)
65            self._check_for_click()
66