tests/test-atomictempfile.py
author Martin von Zweigbergk <martinvonz@google.com>
Fri, 27 Feb 2015 14:02:30 -0800
changeset 24185 3a3806fe3ddf
parent 18666 fb9d1c2805ff
child 29188 f00f1de16454
permissions -rw-r--r--
copies: replace _nonoverlap() by calls to manifestdict.filesnotin() Now that we have manifestdict.filesnotin(), we can write _nonoverlap() in terms of that method instead, enabling future speedups when filesnotin() gets optimized, and perhaps making the code a little clearer at the same time.

import os
import glob
import unittest
import silenttestrunner

from mercurial.util import atomictempfile

class testatomictempfile(unittest.TestCase):
    def test1_simple(self):
        if os.path.exists('foo'):
            os.remove('foo')
        file = atomictempfile('foo')
        (dir, basename) = os.path.split(file._tempname)
        self.assertFalse(os.path.isfile('foo'))
        self.assertTrue(basename in glob.glob('.foo-*'))

        file.write('argh\n')
        file.close()

        self.assertTrue(os.path.isfile('foo'))
        self.assertTrue(basename not in glob.glob('.foo-*'))

    # discard() removes the temp file without making the write permanent
    def test2_discard(self):
        if os.path.exists('foo'):
            os.remove('foo')
        file = atomictempfile('foo')
        (dir, basename) = os.path.split(file._tempname)

        file.write('yo\n')
        file.discard()

        self.assertFalse(os.path.isfile('foo'))
        self.assertTrue(basename not in os.listdir('.'))

    # if a programmer screws up and passes bad args to atomictempfile, they
    # get a plain ordinary TypeError, not infinite recursion
    def test3_oops(self):
        self.assertRaises(TypeError, atomictempfile)

if __name__ == '__main__':
    silenttestrunner.main(__name__)