[Python-checkins] python/dist/src/Lib/test test_peepholer.py, 1.6.2.1, 1.6.2.2

[nascheme@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv9954/Lib/test

Modified Files:
      Tag: ast-branch
	test_peepholer.py 
Log Message:
Merge changes from HEAD into test_peepholer.py.


Index: test_peepholer.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_peepholer.py,v
retrieving revision 1.6.2.1
retrieving revision 1.6.2.2
diff -u -d -r1.6.2.1 -r1.6.2.2
--- test_peepholer.py	7 Jan 2005 06:59:10 -0000	1.6.2.1
+++ test_peepholer.py	11 Oct 2005 22:50:45 -0000	1.6.2.2
@@ -109,7 +109,6 @@
             ('a="abc" + "def"', "('abcdef')"),      # check string ops
             ('a = 3**4', '(81)'),                   # binary power
             ('a = 3*4', '(12)'),                    # binary multiply
-            ('a = 13/4.0', '(3.25)'),               # binary divide
             ('a = 13//4', '(3)'),                   # binary floor divide
             ('a = 14%4', '(2)'),                    # binary modulo
             ('a = 2+3', '(5)'),                     # binary add
@@ -130,6 +129,29 @@
         self.assert_('(2)' in asm)
         self.assert_("('b')" in asm)
 
+        # Verify that large sequences do not result from folding
+        asm = dis_single('a="x"*1000')
+        self.assert_('(1000)' in asm)
+
+    def test_folding_of_unaryops_on_constants(self):
+        for line, elem in (
+            ('`1`', "('1')"),                       # unary convert
+            ('-0.5', '(-0.5)'),                     # unary negative
+            ('~-2', '(1)'),                         # unary invert
+        ):
+            asm = dis_single(line)
+            self.assert_(elem in asm, asm)
+            self.assert_('UNARY_' not in asm)
+
+        # Verify that unfoldables are skipped
+        for line, elem in (
+            ('-"abc"', "('abc')"),                  # unary negative
+            ('~"abc"', "('abc')"),                  # unary invert
+        ):
+            asm = dis_single(line)
+            self.assert_(elem in asm, asm)
+            self.assert_('UNARY_' in asm)
+
     def test_elim_extra_return(self):
         # RETURN LOAD_CONST None RETURN  -->  RETURN
         def f(x):