tests/test-atomictempfile.py
author Gregory Szorc <gregory.szorc@gmail.com>
Sun, 04 May 2014 21:46:49 -0700
changeset 21248 48e859e30cbf
parent 18666 fb9d1c2805ff
child 29188 f00f1de16454
permissions -rw-r--r--
children: declare command using decorator
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import os
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import glob
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import unittest
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import silenttestrunner
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from mercurial.util import atomictempfile
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class testatomictempfile(unittest.TestCase):
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    def test1_simple(self):
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        if os.path.exists('foo'):
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            os.remove('foo')
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        file = atomictempfile('foo')
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        (dir, basename) = os.path.split(file._tempname)
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        self.assertFalse(os.path.isfile('foo'))
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        self.assertTrue(basename in glob.glob('.foo-*'))
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        file.write('argh\n')
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        file.close()
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        self.assertTrue(os.path.isfile('foo'))
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        self.assertTrue(basename not in glob.glob('.foo-*'))
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    # discard() removes the temp file without making the write permanent
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    def test2_discard(self):
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        if os.path.exists('foo'):
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            os.remove('foo')
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        file = atomictempfile('foo')
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        (dir, basename) = os.path.split(file._tempname)
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        file.write('yo\n')
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        file.discard()
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        self.assertFalse(os.path.isfile('foo'))
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        self.assertTrue(basename not in os.listdir('.'))
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    # if a programmer screws up and passes bad args to atomictempfile, they
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    # get a plain ordinary TypeError, not infinite recursion
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    def test3_oops(self):
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        self.assertRaises(TypeError, atomictempfile)
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if __name__ == '__main__':
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    silenttestrunner.main(__name__)