[Python-checkins] python/dist/src/Lib/test test_peepholer.py, 1.8, 1.9

[rhettinger at users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv26507/Lib/test

Modified Files:
	test_peepholer.py 
Log Message:
Transform "x in (1,2,3)" to "x in frozenset([1,2,3])".

Inspired by Skip's idea to recognize the throw-away nature of sequences
in this context and to transform their type to one with better performance.



Index: test_peepholer.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_peepholer.py,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -d -r1.8 -r1.9
--- test_peepholer.py	26 Jan 2005 12:50:05 -0000	1.8
+++ test_peepholer.py	6 Feb 2005 22:05:42 -0000	1.9
@@ -133,6 +133,16 @@
         asm = dis_single('a="x"*1000')
         self.assert_('(1000)' in asm)
 
+    def test_set_conversion(self):
+        for line in (
+            'x in (1,2,3)',
+                'x not in (1,2,3)',
+                'not x in (1,2,3)',
+                'not x not in (1,2,3)',
+            ):
+            asm = dis_single(line)
+            self.assert_('frozenset' in asm)
+
     def test_elim_extra_return(self):
         # RETURN LOAD_CONST None RETURN  -->  RETURN
         def f(x):