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55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
import time
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import sys
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# Epsilon for taking floating point calculation inaccuracies in mind
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EPSILON = 1e-06
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# We must account for clock inaccuracy
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if sys.platform == 'win32' or sys.platform == 'cygwin':
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# Assume 19 milliseconds inaccuracy on Windows (worst case)
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# 16 milliseconds plus 3 milliseconds for execution time
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CLOCK_INACCURACY = 0.019
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else:
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# On other platforms, assume 5 milliseconds, allowing for execution time
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# (5000 times higher than their actual 1 microsecond accuracy)
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CLOCK_INACCURACY = 0.005
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def test_clock_get_frame_time(clockobj):
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current_time = clockobj.get_frame_time()
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time.sleep(0.2)
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assert clockobj.get_frame_time() == current_time
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def test_clock_jump_frame_time(clockobj):
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current_time = clockobj.get_frame_time()
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clockobj.tick()
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assert clockobj.get_frame_time() == current_time + clockobj.get_frame_time()
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def test_clock_get_real_time(clockobj):
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current_time = clockobj.get_real_time()
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time.sleep(0.4)
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assert clockobj.get_real_time() - current_time + EPSILON >= 0.4 - CLOCK_INACCURACY
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def test_clock_get_long_time(clockobj):
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current_time = clockobj.get_long_time()
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time.sleep(0.4)
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assert clockobj.get_long_time() - current_time + EPSILON >= 0.4 - CLOCK_INACCURACY
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def test_clock_get_dt(clockobj):
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clockobj.tick()
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first_tick = clockobj.get_frame_time()
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clockobj.tick()
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second_tick = clockobj.get_frame_time()
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assert clockobj.get_dt() == second_tick - first_tick
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def test_clock_reset(clockobj):
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clockobj.reset()
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assert clockobj.get_dt() == 0
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assert clockobj.get_frame_time() == 0
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assert clockobj.get_real_time() - EPSILON <= CLOCK_INACCURACY
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