def testGenerateShardedFilenamesManyShards(self):
names = io.GenerateShardedFilenames('/dir/foo/bar@100000')
self.assertEquals(len(names), 100000)
self.assertEquals(names[99999], '/dir/foo/bar-099999-of-100000')
def testGenerateShardedFilenames(self, spec, expected):
names = io.GenerateShardedFilenames(spec)
self.assertEquals(names, expected)