view tests/test-simplekeyvaluefile.py @ 33378:adf95bfb423a

match: make nevermatcher an exact matcher and a prefix matcher

The m.isexact() and m.prefix() methods are used by callers to
determine whether m.files() can be used for fast paths. It seems safe
to let callers to any fast paths it can that rely on the empty
m.files().

from __future__ import absolute_import

import unittest
import silenttestrunner

from mercurial import (
    error,
    scmutil,
)

class mockfile(object):
    def __init__(self, name, fs):
        self.name = name
        self.fs = fs

    def __enter__(self):
        return self

    def __exit__(self, *args, **kwargs):
        pass

    def write(self, text):
        self.fs.contents[self.name] = text

    def read(self):
        return self.fs.contents[self.name]

class mockvfs(object):
    def __init__(self):
        self.contents = {}

    def read(self, path):
        return mockfile(path, self).read()

    def readlines(self, path):
        # lines need to contain the trailing '\n' to mock the real readlines
        return [l for l in mockfile(path, self).read().splitlines(True)]

    def __call__(self, path, mode, atomictemp):
        return mockfile(path, self)

class testsimplekeyvaluefile(unittest.TestCase):
    def setUp(self):
        self.vfs = mockvfs()

    def testbasicwritingiandreading(self):
        dw = {'key1': 'value1', 'Key2': 'value2'}
        scmutil.simplekeyvaluefile(self.vfs, 'kvfile').write(dw)
        self.assertEqual(sorted(self.vfs.read('kvfile').split('\n')),
                         ['', 'Key2=value2', 'key1=value1'])
        dr = scmutil.simplekeyvaluefile(self.vfs, 'kvfile').read()
        self.assertEqual(dr, dw)

    def testinvalidkeys(self):
        d = {'0key1': 'value1', 'Key2': 'value2'}
        with self.assertRaisesRegexp(error.ProgrammingError,
                                     'keys must start with a letter.*'):
            scmutil.simplekeyvaluefile(self.vfs, 'kvfile').write(d)

        d = {'key1@': 'value1', 'Key2': 'value2'}
        with self.assertRaisesRegexp(error.ProgrammingError, 'invalid key.*'):
            scmutil.simplekeyvaluefile(self.vfs, 'kvfile').write(d)

    def testinvalidvalues(self):
        d = {'key1': 'value1', 'Key2': 'value2\n'}
        with self.assertRaisesRegexp(error.ProgrammingError,  'invalid val.*'):
            scmutil.simplekeyvaluefile(self.vfs, 'kvfile').write(d)

    def testcorruptedfile(self):
        self.vfs.contents['badfile'] = 'ababagalamaga\n'
        with self.assertRaisesRegexp(error.CorruptedState,
                                     'dictionary.*element.*'):
            scmutil.simplekeyvaluefile(self.vfs, 'badfile').read()

    def testfirstline(self):
        dw = {'key1': 'value1'}
        scmutil.simplekeyvaluefile(self.vfs, 'fl').write(dw, firstline='1.0')
        self.assertEqual(self.vfs.read('fl'), '1.0\nkey1=value1\n')
        dr = scmutil.simplekeyvaluefile(self.vfs, 'fl')\
                    .read(firstlinenonkeyval=True)
        self.assertEqual(dr, {'__firstline': '1.0', 'key1': 'value1'})

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