# Copyright 2018 The dm_control Authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# ============================================================================

"""Tests for the base windowing system."""

from absl.testing import absltest

from dm_control.viewer import user_input

import mock

# pylint: disable=g-import-not-at-top

_OPEN_GL_MOCK = mock.MagicMock()

_MOCKED_MODULES = {

'OpenGL': _OPEN_GL_MOCK,

'OpenGL.GL': _OPEN_GL_MOCK,

}

with mock.patch.dict('sys.modules', _MOCKED_MODULES):

from dm_control.viewer.gui import base

# pylint: enable=g-import-not-at-top

_EPSILON = 1e-7

@mock.patch.object(base, 'time')

class DoubleClickDetectorTest(absltest.TestCase):

def setUp(self):

super().setUp()

self.detector = base.DoubleClickDetector()

self.double_click_event = (user_input.MOUSE_BUTTON_LEFT, user_input.PRESS)

def test_two_rapid_clicks_yield_double_click_event(self, mock_time):

mock_time.time.return_value = 0

self.assertFalse(self.detector.process(*self.double_click_event))

mock_time.time.return_value = base._DOUBLE_CLICK_INTERVAL - _EPSILON

self.assertTrue(self.detector.process(*self.double_click_event))

def test_two_slow_clicks_dont_yield_double_click_event(self, mock_time):

mock_time.time.return_value = 0

self.assertFalse(self.detector.process(*self.double_click_event))

mock_time.time.return_value = base._DOUBLE_CLICK_INTERVAL

self.assertFalse(self.detector.process(*self.double_click_event))

def test_sequence_of_slow_clicks_followed_by_fast_click(self, mock_time):

click_times = [(0., False),

(base._DOUBLE_CLICK_INTERVAL * 2., False),

(base._DOUBLE_CLICK_INTERVAL * 3. - _EPSILON, True)]

for click_time, result in click_times:

mock_time.time.return_value = click_time

self.assertEqual(result, self.detector.process(*self.double_click_event))

if __name__ == '__main__':

absltest.main()