Thanks John and others,
Replies much appreciated. I don't know how it could affect the results, but the
function being tested is using redis. And I am running the test code under
PyCharm, so perhaps using the module-level random number generator wasn't such
a good idea. Live and learn.
In response to your question, John, all I know is that my own code doesn't use
the random module outside of this code fragment.
Ned, thanks for the tip about creating a new instance of Random(). The test
failures are still happening when the stockbins are randomised (as in code
below.) That is suggesting that my code is somehow at fault.
Peter, I am using PyCharm as I said. But using a new Random() object to
generate the sequence doesn't solve the problem apparently. The code now looks
like this:
rnd = random.Random()
...
for qty in [4, 0]:
rnd.seed(seed)
for cart in range(test_size):
for special in range(rnd.randrange(3)):
s.addUpdate_special_to_cart(cart=cart,
stockbin=rnd.randrange(test_size),
special_id=rnd.randrange(test_size), special_qty=qty,
products=[(rnd.choice(PRODUCTS), rnd.choice(range(10)))
for r in
range(rnd.randrange(7))])
Cheers,
Nick
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