Add ignore_case flag to doc-test

Author: Justin Baum

Lib/doctest.py

@@ -63,6 +63,7 @@ def _test():
     'REPORT_ONLY_FIRST_FAILURE',
     'REPORTING_FLAGS',
     'FAIL_FAST',
+    'IGNORE_CASE',
     # 1. Utility Functions
     # 2. Example & DocTest
     'Example',
@@ -139,13 +140,15 @@ def register_optionflag(name):
 ELLIPSIS = register_optionflag('ELLIPSIS')
 SKIP = register_optionflag('SKIP')
 IGNORE_EXCEPTION_DETAIL = register_optionflag('IGNORE_EXCEPTION_DETAIL')
+IGNORE_CASE = register_optionflag('IGNORE_CASE')
 
 COMPARISON_FLAGS = (DONT_ACCEPT_TRUE_FOR_1 |
                     DONT_ACCEPT_BLANKLINE |
                     NORMALIZE_WHITESPACE |
                     ELLIPSIS |
                     SKIP |
-                    IGNORE_EXCEPTION_DETAIL)
+                    IGNORE_EXCEPTION_DETAIL |
+                    IGNORE_CASE)
 
 REPORT_UDIFF = register_optionflag('REPORT_UDIFF')
 REPORT_CDIFF = register_optionflag('REPORT_CDIFF')
@@ -1607,6 +1610,12 @@ def check_output(self, want, got, optionflags):
         if got == want:
             return True
 
+        # Ignore case if flag
+        # Lowercase got and want
+        if (optionflags & IGNORE_CASE):
+            got = got.lower()
+            want = want.lower()
+
         # 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):