def test_apparently_instantaneous_tests():
time.freeze()
@given(st.integers())
def test(i):
pass
stats = call_for_statistics(test)
assert stats.runtimes == "< 1ms"
def test_apparently_instantaneous_tests():
time.freeze()
@given(st.integers())
def test(i):
pass
stats = describe_statistics(call_for_statistics(test))
assert "< 1ms" in stats
def test_apparently_instantaneous_tests():
time.freeze()
@given(st.integers())
def test(i):
pass
stats = call_for_statistics(test)
assert stats.runtimes == '< 1ms'
def test_will_terminate_stalled_shrinks():
# Suppress the time based slow shrinking check - we only want
# the one that checks if we're in a stall where we've shrunk
# as far as we're going to get.
time.freeze()
@shrinking_from([255] * 100)
def shrinker(data):
count = 0
for _ in range(100):
if data.draw_bits(8) != 255:
count += 1
if count >= 10:
return
data.mark_interesting()
shrinker.shrink()
assert shrinker.calls <= 1 + 2 * shrinker.max_stall
def test_draw_time_percentage(draw_delay, test_delay):
time.freeze()
@st.composite
def s(draw):
if draw_delay:
time.sleep(0.05)
@given(s())
def test(_):
if test_delay:
time.sleep(0.05)
stats = call_for_statistics(test)
if not draw_delay:
assert stats.draw_time_percentage == "~ 0%"
elif test_delay:
assert stats.draw_time_percentage == "~ 50%"
else:
assert stats.draw_time_percentage == "~ 100%"
def test_draw_time_percentage(draw_delay, test_delay):
time.freeze()
@st.composite
def s(draw):
if draw_delay:
time.sleep(0.05)
@given(s())
def test(_):
if test_delay:
time.sleep(0.05)
stats = call_for_statistics(test)
if not draw_delay:
assert stats.draw_time_percentage == '~ 0%'
elif test_delay:
assert stats.draw_time_percentage == '~ 50%'
else:
assert stats.draw_time_percentage == '~ 100%'
