range: lean and mean

Lib/test/test_range.py

 # Python test set -- built-in functions
 
 import test.test_support, unittest
 import sys
 
 import warnings
 warnings.filterwarnings("ignore", "integer argument expected",
                         DeprecationWarning, "unittest")
 
 class RangeTest(unittest.TestCase):
@@ skipping 50 matching lines @@
         self.assertEqual(r.start, 0)
         self.assertEqual(r.stop, 10)
         self.assertEqual(r.step, 2)
         r = range(10)
         self.assertEqual(r.start, 0)
         self.assertEqual(r.stop, 10)
         self.assertEqual(r.step, 1)
         r = range(10, 0, 4)
         self.assertEqual(r.start, 10)
         self.assertEqual(r.stop, 0)
         self.assertEqual(r.step, 4)

[GvR, 2008/05/03 05:04:35]

Well how about

r = range(1, 10, 2) # start=1, stop=10, step=2

?  (Carried over from previous review.)

+        r = range(1, 10, 2)
+        self.assertEqual(r.start, 1)
+        self.assertEqual(r.stop, 10)
+        self.assertEqual(r.step, 2)
+
+    def test_len(self):
+        self.assertEqual(len(range(10)), 10)
+        self.assertEqual(len(range(10, 0)), 0)
+        self.assertEqual(len(range(0, 10, 2)), 5)
+
+        self.assertEqual(len(range(0, sys.maxsize, sys.maxsize-1)), 2)
+
+        r = range(-sys.maxsize, sys.maxsize, 2)
+        self.assertEqual(len(r), sys.maxsize)
 
 def test_main():
     test.test_support.run_unittest(RangeTest)
 
 if __name__ == "__main__":
     test_main()