When running script tests on Python 2.7.13 every test fails with
TypeError: environment can only contain strings: unicode in os.environ: [(u'PYWIKIBOT_DIR_PWB', '')]
See also T108035
Complete traceback for one test:
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ERROR: test_wikisourcetext (tests.script_tests.TestScriptSimulate)
Test running wikisourcetext -simulate.
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Traceback (most recent call last):
File "C:\pwb\GIT\core\tests\script_tests.py", line 266, in testScript
error=error, overrides=test_overrides)
File "C:\pwb\GIT\core\tests\utils.py", line 749, in execute_pwb
data_in=data_in, timeout=timeout, error=error)
File "C:\pwb\GIT\core\tests\utils.py", line 684, in execute
'{}: unicode in os.environ: {!r}'.format(e, unicode_env))
TypeError: environment can only contain strings: unicode in os.environ: [(u'PYWIKIBOT_DIR_PWB', '')]
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