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Christian Tismer: added test to ensure that multiplication commutes.

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[The test is in a slightly odd place, in test_division_2; but it
exercises the recent change to long_mult(), and that's all we really
ask for.  --GvR]
This commit is contained in:
Guido van Rossum 2000-04-10 17:41:37 +00:00
parent ba71a247ac
commit 6e277cf7de
1 changed files with 2 additions and 0 deletions
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2
Lib/test/test_long.py
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@ -77,6 +77,8 @@ def getran2(ndigits):
def test_division_2(x, y):
q, r = divmod(x, y)
q2, r2 = x/y, x%y
pab, pba = x*y, y*x
check(pab == pba, "multiplication does not commute for", x, y)
check(q == q2, "divmod returns different quotient than / for", x, y)
check(r == r2, "divmod returns different mod than % for", x, y)
check(x == q*y + r, "x != q*y + r after divmod on", x, y)