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| author | Fred Drake <fdrake@acm.org> | 2001-08-30 18:56:30 (GMT) |
|---|---|---|
| committer | Fred Drake <fdrake@acm.org> | 2001-08-30 18:56:30 (GMT) |
| commit | d256271c552cd021a91732ddc31552ade6cdf79f (patch) | |
| tree | 48de4771bb800454c179de0247f97c664a51a6ea /Lib/test/test_pow.py | |
| parent | 14ef244dfe8b79694d4baa48ceda874fe27ec05d (diff) | |
| download | cpython-d256271c552cd021a91732ddc31552ade6cdf79f.zip cpython-d256271c552cd021a91732ddc31552ade6cdf79f.tar.gz cpython-d256271c552cd021a91732ddc31552ade6cdf79f.tar.bz2 | |
Added a regression test for the negation-of-exponentiation optimization
bug from compile.c. (SF bug #456756.)
Diffstat (limited to 'Lib/test/test_pow.py')
| -rw-r--r-- | Lib/test/test_pow.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_pow.py b/Lib/test/test_pow.py index bccd207..45964b9 100644 --- a/Lib/test/test_pow.py +++ b/Lib/test/test_pow.py @@ -1,6 +1,9 @@ import sys import test_support +from test_support import verify + + def powtest(type): if type != float: print " Testing 2-argument pow() function..." @@ -76,6 +79,14 @@ powtest(long) print 'Testing floating point mode...' powtest(float) +# Make sure '**' does the right thing; these form a +# regression test for SourceForge bug #456756. +# +verify((-2 ** 2) == -4, + "expected '-2 ** 2' to be -4, got %s" % (-2 ** 2)) +verify(((-2) ** 2) == 4, + "expected '(-2) ** 2' to be 4, got %s" % ((-2) ** 2)) + # Other tests-- not very systematic print 'The number in both columns should match.' |