[Python-checkins] r54210 - sandbox/trunk/pep3101/test_simpleformat.py

[eric.smith]

Author: eric.smith
Date: Wed Mar  7 16:46:33 2007
New Revision: 54210

Modified:
   sandbox/trunk/pep3101/test_simpleformat.py
Log:
Added more extensive binary formatting (':b') tests.

Modified: sandbox/trunk/pep3101/test_simpleformat.py
==============================================================================
--- sandbox/trunk/pep3101/test_simpleformat.py	(original)
+++ sandbox/trunk/pep3101/test_simpleformat.py	Wed Mar  7 16:46:33 2007
@@ -276,6 +276,16 @@
         self.formatEqualsWithUnicode("-" + "1" * 100, "{0:b}", -(2**100 - 1))
         self.formatEqualsWithUnicode("(" + "1" * 100 + ")", "{0:()b}", -(2**100 - 1))
         self.formatEqualsWithUnicode("(" + " " * 98 + "1" * 100 + ")", "{0:=()200b}", -(2**100 - 1))
+        for n in range(1, 100):
+            # build an n bit integer, alternating ones and zeros
+            # as n gets large, these will become longs
+            s = "10" * (n / 2) + (n % 2 and "1" or "")
+            i = int(s, 2)
+            self.formatEquals(s, "{0:b}", i)
+
+            # make sure negative also works, hoping to catch an
+            #  overflow off the end of the digits
+            self.formatEquals("(" + s + ")", "{0:()b}", -i)
 
     def test_number_specifier(self):
         def test(value):