tests: Use en_US.UTF-8 locale when C.UTF-8 not available
Some operating systems don't have the `C.UTF-8` locale installed yet
(for instance, CentOS 7). In such a case, fallback to `en_US.UTF-8` so
that tests can be run.
This follows commit 92ff315.
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@@ -299,7 +299,10 @@ class CommandLineTestCase(unittest.TestCase):
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# Make sure the default localization conditions on this "system"
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# Make sure the default localization conditions on this "system"
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# support UTF-8 encoding.
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# support UTF-8 encoding.
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loc = locale.getlocale()
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loc = locale.getlocale()
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locale.setlocale(locale.LC_ALL, 'C.UTF-8')
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try:
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locale.setlocale(locale.LC_ALL, 'C.UTF-8')
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except locale.Error:
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locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
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sys.stdout, sys.stderr = StringIO(), StringIO()
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sys.stdout, sys.stderr = StringIO(), StringIO()
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with self.assertRaises(SystemExit) as ctx:
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with self.assertRaises(SystemExit) as ctx:
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