def test_for_leaks(self):
# Our original bad memory leak only happened on line numbers > 255, so
# make a code object with more lines than that. Ugly string mumbo
# jumbo to get 300 blank lines at the beginning..
code = (
"""\
# blank line\n"""
* 300
+ """\
def once(x): # line 301
if x % 100 == 0:
raise Exception("100!")
elif x % 2:
return 10
else: # line 306
return 11
i = 0 # Portable loop without alloc'ing memory.
while i < ITERS:
try:
once(i)
except:
pass
i += 1 # line 315
"""
)
lines = list(range(301, 315))
lines.remove(306) # Line 306 is the "else".
# This is a non-deterministic test, so try it a few times, and fail it
# only if it predominantly fails.
fails = 0
for _ in range(10):
ram_0 = osinfo.process_ram()
self.check_coverage(code.replace("ITERS", "10"), lines, "")
ram_10 = osinfo.process_ram()
self.check_coverage(code.replace("ITERS", "10000"), lines, "")
ram_10k = osinfo.process_ram()
# Running the code 10k times shouldn't grow the ram much more than
# running it 10 times.
ram_growth = (ram_10k - ram_10) - (ram_10 - ram_0)
if ram_growth > 100000:
fails += 1
if fails > 8:
self.fail("RAM grew by %d" % (ram_growth))
def test_for_leaks(self):
if env.JYTHON:
self.skipTest("Don't bother on Jython")
# Our original bad memory leak only happened on line numbers > 255, so
# make a code object with more lines than that. Ugly string mumbo
# jumbo to get 300 blank lines at the beginning..
code = """\
# blank line\n""" * 300 + """\
def once(x): # line 301
if x % 100 == 0:
raise Exception("100!")
elif x % 2:
return 10
else: # line 306
return 11
i = 0 # Portable loop without alloc'ing memory.
while i < ITERS:
try:
once(i)
except:
pass
i += 1 # line 315
"""
lines = list(range(301, 315))
lines.remove(306) # Line 306 is the "else".
# This is a non-deterministic test, so try it a few times, and fail it
# only if it predominantly fails.
fails = 0
for _ in range(10):
ram_0 = osinfo.process_ram()
self.check_coverage(code.replace("ITERS", "10"), lines, "")
ram_10 = osinfo.process_ram()
self.check_coverage(code.replace("ITERS", "10000"), lines, "")
ram_10k = osinfo.process_ram()
# Running the code 10k times shouldn't grow the ram much more than
# running it 10 times.
ram_growth = (ram_10k - ram_10) - (ram_10 - ram_0)
if ram_growth > 100000:
fails += 1 # pragma: only failure
if fails > 8:
self.fail("RAM grew by %d" % (ram_growth)) # pragma: only failure
