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Viewing changes to entertainerlib/tests/test_motionbuffer.py

  • Committer: Paul Hummer
  • Date: 2009-05-10 17:36:49 UTC
  • mfrom: (360.1.3 entertainer-future)
  • Revision ID: paul@eventuallyanyway.com-20090510173649-0odjpoqifn303t46
Merged from entertainer-future

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entertainerlib/tests/test_motionbuffer.py
 
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# Copyright (c) 2009 Entertainer Developers - See COPYING - GPLv2
 
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"""Tests MotionBuffer"""
 
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from entertainerlib.frontend.gui.widgets.motion_buffer import MotionBuffer
 
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from entertainerlib.tests import EntertainerTest
 
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from entertainerlib.tests.mock import MockPointerEvent
 
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class MotionBufferTest(EntertainerTest):
 
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    """Test for entertainerlib.frontend.gui.widgets.motion_buffer"""
 
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    def setUp(self):
 
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        '''Set up the test.'''
 
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        EntertainerTest.setUp(self)
 
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        self.buffer = MotionBuffer()
 
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    def tearDown(self):
 
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        '''Clean up after the test.'''
 
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        EntertainerTest.tearDown(self)
 
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    def test_create(self):
 
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        '''Test correct MotionBuffer initialization.'''
 
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        self.assertTrue(isinstance(self.buffer, MotionBuffer))
 
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    def test_computations_from_start(self):
 
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        '''Test all values on a 3 events motion, computed from start.'''
 
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        self.buffer.start(self._create_first_event())
 
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        self.buffer.take_new_motion_event(self._create_second_event())
 
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        self.buffer.compute_from_start(self._create_third_event())
 
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        self.assertEqual(self.buffer.dt_from_start, 2)
 
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        self.assertEqual(self.buffer.dx_from_start, 10)
 
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        self.assertEqual(self.buffer.dy_from_start, 10)
 
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        self.assertAlmostEqual(self.buffer.distance_from_start, 14.142135624)
 
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    def test_computations_from_last_event(self):
 
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        '''Test all values on a 3 events motion, computed from last event.'''
 
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        self.buffer.start(self._create_first_event())
 
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        self.buffer.take_new_motion_event(self._create_second_event())
 
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        self.buffer.compute_from_last_motion_event(self._create_third_event())
 
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        self.assertEqual(self.buffer.dt_from_last_motion_event, 1)
 
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        self.assertEqual(self.buffer.dx_from_last_motion_event, 10)
 
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        self.assertEqual(self.buffer.dy_from_last_motion_event, 0)
 
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        self.assertEqual(self.buffer.distance_from_last_motion_event, 10.0)
 
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        self.assertEqual(self.buffer.speed_x_from_last_motion_event, 10.0)
 
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        self.assertEqual(self.buffer.speed_y_from_last_motion_event, 0.0)
 
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        self.assertEqual(self.buffer.speed_from_last_motion_event, 10.0)
 
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        self.assertAlmostEqual(self.buffer.dt_ema, 0.3333333333)
 
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        self.assertAlmostEqual(self.buffer.dx_ema, 3.3333333333)
 
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        self.assertAlmostEqual(self.buffer.dy_ema, 0.0)
 
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        self.assertAlmostEqual(self.buffer.distance_ema, 3.3333333333)
 
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        self.assertAlmostEqual(self.buffer.speed_x_ema, 3.3333333333)
 
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        self.assertAlmostEqual(self.buffer.speed_y_ema, 0.0)
 
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        self.assertAlmostEqual(self.buffer.speed_ema, 3.3333333333)
 
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    def _create_first_event(self):
 
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        '''Create a virtual pointer event.'''
 
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        event = MockPointerEvent()
 
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        event.x = 100
 
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        event.y = 100
 
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        event.time = 0
 
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        return event
 
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    def _create_second_event(self):
 
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        '''Create a virtual pointer event.'''
 
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        event = MockPointerEvent()
 
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        event.x = 100
 
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        event.y = 110
 
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        event.time = 1
 
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        return event
 
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    def _create_third_event(self):
 
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        '''Create a virtual pointer event.'''
 
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        event = MockPointerEvent()
 
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        event.x = 110
 
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        event.y = 110
 
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        event.time = 2
 
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        return event
 
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