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self.assertEqual(None, err)
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def test_cat_file_to_file(self):
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retcode, out, err = self.run_command(['cat', 'file', '>file2'],
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self.assertFileEqual('content\n', 'file2')
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def test_cat_files_to_file(self):
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retcode, out, err = self.run_command(['cat', 'cat', 'dog', '>file'],
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self.assertFileEqual('cat\ndog\n', 'file')