Issue 13337: IGNORE_CASE doctest option flag (original) (raw)

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