match stdin encoding in frontend readline test

[minrk]

previously DEFAULT_ENCODING was used, but that's not what we use when storing readline history.

closes #2023

[takluyver]

DEFAULT_ENCODING should get the encoding from stdin (https://github.com/ipython/ipython/blob/master/IPython/utils/encoding.py) - why is that not working?

[takluyver]

Ah, I see. DEFAULT_ENCODING gets stdin.encoding, but if that doesn't exist, and locale.getpreferredencoding() doesn't work, it falls back to sys.getdefaultencoding() - which is ascii for Python 2.

[takluyver]

Would it make sense to make the actual code use DEFAULT_ENCODING, rather than making the test not use it? I'm not quite sure of the ramifications, though, so maybe it's best to fix the test for 0.13 and sort it out later.

[minrk]

I was just typing up pretty much exactly that :)

[minrk]

Test results for commit d4a7b66 merged into master
Platform: darwin

• python2.6: OK (libraries not available: cython matplotlib oct2py pygments pymongo qt rpy2 tornado wx wx.aui)
• python2.7: OK (libraries not available: oct2py wx wx.aui)
• python3.2: OK (libraries not available: cython matplotlib oct2py pymongo qt rpy2 wx wx.aui)

Not available for testing: python3.1

[minrk]

Opened #2032 for the real fix later, and merging this as-is.