# 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 of the application.py module."""

from absl.testing import absltest

from absl.testing import parameterized

from dm_control.viewer import application

import dm_env

from dm_env import specs

import mock

import numpy as np

class ApplicationTest(parameterized.TestCase):

def setUp(self):

super().setUp()

with mock.patch(application.__name__ + '.gui'):

self.app = application.Application()

self.app._viewer = mock.MagicMock()

self.app._keyboard_action = mock.MagicMock()

self.environment = mock.MagicMock(spec=dm_env.Environment)

self.environment.action_spec.return_value = specs.BoundedArray(

(1,), np.float64, -1, 1)

self.environment.physics = mock.MagicMock()

self.app._environment = self.environment

self.agent = mock.MagicMock()

self.loader = lambda: self.environment

def test_on_reload_defers_viewer_initialization_until_tick(self):

self.app._on_reload(zoom_to_scene=True)

self.assertEqual(0, self.app._viewer.initialize.call_count)

self.assertIsNotNone(self.app._deferred_reload_request)

def test_deferred_on_reload_parameters(self):

self.app._on_reload(zoom_to_scene=True)

self.assertTrue(self.app._deferred_reload_request.zoom_to_scene)

self.app._on_reload(zoom_to_scene=False)

self.assertFalse(self.app._deferred_reload_request.zoom_to_scene)

def test_executing_deferred_initialization(self):

self.app._deferred_reload_request = application.ReloadParams(False)

self.app._tick()

self.app._viewer.initialize.assert_called_once()

def test_processing_zoom_to_scene_request(self):

self.app._perform_deferred_reload(application.ReloadParams(True))

self.app._viewer.zoom_to_scene.assert_called_once()

def test_skipping_zoom_to_scene(self):

self.app._perform_deferred_reload(application.ReloadParams(False))

self.app._viewer.zoom_to_scene.assert_not_called()

def test_on_reload_deinitializes_viewer_instantly(self):

self.app._on_reload()

self.app._viewer.deinitialize.assert_called_once()

def test_zoom_to_scene_after_launch(self):

self.app.launch(self.loader, self.agent)

self.app._viewer.zoom_to_scene()

def test_tick_runtime(self):

self.app._runtime = mock.MagicMock()

self.app._pause_subject.value = False

self.app._tick()

self.app._runtime.tick.assert_called_once()

def test_restart_runtime(self):

self.app._load_environment = mock.MagicMock()

self.app._runtime = mock.MagicMock()

self.app._restart_runtime()

self.app._runtime.stop.assert_called_once()

self.app._load_environment.assert_called_once()

if __name__ == '__main__':

absltest.main()