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import compileall
import imp
import os
import py_compile
import shutil
import struct
import tempfile
from test import support
import unittest
class CompileallTests(unittest.TestCase):
def setUp(self):
self.directory = tempfile.mkdtemp()
self.source_path = os.path.join(self.directory, '_test.py')
self.bc_path = self.source_path + ('c' if __debug__ else 'o')
with open(self.source_path, 'w') as file:
file.write('x = 123\n')
def tearDown(self):
shutil.rmtree(self.directory)
def data(self):
with open(self.bc_path, 'rb') as file:
data = file.read(8)
mtime = int(os.stat(self.source_path).st_mtime)
compare = struct.pack('<4sl', imp.get_magic(), mtime)
return data, compare
def recreation_check(self, metadata):
"""Check that compileall recreates bytecode when the new metadata is
used."""
if not hasattr(os, 'stat'):
return
py_compile.compile(self.source_path)
self.assertEqual(*self.data())
with open(self.bc_path, 'rb') as file:
bc = file.read()[len(metadata):]
with open(self.bc_path, 'wb') as file:
file.write(metadata)
file.write(bc)
self.assertNotEqual(*self.data())
compileall.compile_dir(self.directory, force=False, quiet=True)
self.assertTrue(*self.data())
def test_mtime(self):
# Test a change in mtime leads to a new .pyc.
self.recreation_check(struct.pack('<4sl', imp.get_magic(), 1))
def test_magic_number(self):
# Test a change in mtime leads to a new .pyc.
self.recreation_check(b'\0\0\0\0')
def test_main():
support.run_unittest(CompileallTests)
if __name__ == "__main__":
test_main()
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