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# Copyright (c) 2015 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
import unittest
import os.path
import tempfile
from multiprocessing import Pool
from UM.SaveFile import SaveFile
write_count = 0
def write_dual(path):
with SaveFile(path, "w") as f:
f.write("test file")
class TestSaveFile(unittest.TestCase):
def setUp(self):
self._temp_dir = tempfile.TemporaryDirectory()
def tearDown(self):
self._temp_dir.cleanup()
self._temp_dir = None
def test_singleWrite(self):
path = os.path.join(self._temp_dir.name, "single_write")
with SaveFile(path, "w") as f:
f.write("test file")
with open(path, encoding = "utf-8") as f:
self.assertEqual(f.readline(), "test file")
def test_multiWrite(self):
path = os.path.join(self._temp_dir.name, "dual_write")
# Start two processes that try to write to the same file
with Pool(processes = 2) as p:
p.apply_async(write_dual, [path])
p.apply(write_dual, [path])
# Once done, there should be just one file
self.assertEqual(len(os.listdir(self._temp_dir.name)), 1)
# And file contents should be correct.
with open(path, encoding = "utf-8") as f:
data = f.read()
self.assertEqual(len(data), 9)
self.assertEqual(data, "test file")
if __name__ == "__main__":
unittest.main()
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