[New-bugs-announce] [issue13337] IGNORE_CASE doctest option flag

[Gerald Dalley]

New submission from Gerald Dalley <dalleyg at alum.mit.edu>:

It would be helpful to have a doctest flag that makes the test case insensitive.

Use case: nan values are printed as "nan" with typical Linux implementations, but as "NaN" on other operating systems like Solaris.

In a naive implementation, the core change to doctest.OutputChecker.check_output is:

+        if optionflags & IGNORE_CASE:
+            got        = got.lower()
+            want       = want.lower()
+            true_line  = "true\n"
+            false_line = "false\n"
+        else:
+            true_line  = "True\n"
+            false_line = "False\n"
+
         # Handle the common case first, for efficiency:
         # if they're string-identical, always return true.
         if got == want:
             return True

         # The values True and False replaced 1 and 0 as the return
         # value for boolean comparisons in Python 2.3.
         if not (optionflags & DONT_ACCEPT_TRUE_FOR_1):
-            if (got,want) == ("True\n", "1\n"):
+            if (got,want) == (true_line, "1\n"):
                 return True
-            if (got,want) == ("False\n", "0\n"):
+            if (got,want) == (false_line, "0\n"):
                 return True

----------
components: Library (Lib)
messages: 146961
nosy: Gerald.Dalley
priority: normal
severity: normal
status: open
title: IGNORE_CASE doctest option flag
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13337>
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