rebaseline_server: extract common unittest code, and rename tests/ -> testdata/

rebaseline_server: extract common unittest code, and rename tests/ -> testdata/

NOTRY=True

Committed: http://code.google.com/p/skia/source/detail?r=13499

[epoger, 2014-02-18 20:27:01]

Ready for review at patchset 2.

Note that all of the *code* changes (except for one line) are in patchset 1. 
Patchset 2 just renames the tests/ directory to testdata/ (because it contains
only the testdata, not the tests themselves)

https://codereview.chromium.org/170803005/diff/1/gm/rebaseline_server/base_un...
File gm/rebaseline_server/base_unittest.py (right):

https://codereview.chromium.org/170803005/diff/1/gm/rebaseline_server/base_un...
gm/rebaseline_server/base_unittest.py:9: A wrapper around the standard Python
unittest library, adding features we need
This is common code I extracted from the other two Python files in this CL.

https://codereview.chromium.org/170803005/diff/30001/gm/rebaseline_server/bas...
File gm/rebaseline_server/base_unittest.py (right):

https://codereview.chromium.org/170803005/diff/30001/gm/rebaseline_server/bas...
gm/rebaseline_server/base_unittest.py:20: TESTDATA_DIR =
os.path.join(PARENT_DIR, 'testdata')
This is the only *code* change in patchset 2: modify 'tests' string to
'testdata'.

[rmistry, 2014-02-18 21:37:39]

LGTM

[epoger, 2014-02-19 15:35:46]

The CQ bit was checked by epoger@google.com

[commit-bot: I haz the power, 2014-02-19 15:35:53]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/epoger@google.com/170803005/30001

[commit-bot: I haz the power, 2014-02-19 15:38:46]

Change committed as 13499