Revert the previous patch to test_pow.py and move the test to test_unary.py
based on a suggestion from Tim Peters; also make sure that we're really
doing exponentiation and not multiplication.
diff --git a/Lib/test/test_pow.py b/Lib/test/test_pow.py
index 45964b9..51d7484 100644
--- a/Lib/test/test_pow.py
+++ b/Lib/test/test_pow.py
@@ -1,8 +1,6 @@
import sys
import test_support
-from test_support import verify
-
def powtest(type):
if type != float:
@@ -79,14 +77,6 @@
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.'
diff --git a/Lib/test/test_unary.py b/Lib/test/test_unary.py
index 3402c55..01c5f01 100644
--- a/Lib/test/test_unary.py
+++ b/Lib/test/test_unary.py
@@ -33,6 +33,14 @@
self.assert_(eval("-" + nines) == eval("-" + nines + "L"))
self.assert_(eval("~" + nines) == eval("~" + nines + "L"))
+ def test_negation_of_exponentiation(self):
+ # Make sure '**' does the right thing; these form a
+ # regression test for SourceForge bug #456756.
+ self.assertEqual(-2 ** 3, -8)
+ self.assertEqual((-2) ** 3, -8)
+ self.assertEqual(-2 ** 4, -16)
+ self.assertEqual((-2) ** 4, 16)
+
def test_bad_types(self):
for op in '+', '-', '~':
self.assertRaises(TypeError, eval, op + "'a'")