test_utils_dirhasher.py 文件源码

def testRewriteFile(self):
        """Changing the file content should change the hash sum"""

        with NamedTemporaryFile() as index:
            with TemporaryDirectory() as tmp:
                with open(os.path.join(tmp, "foo"), 'wb') as f:
                    f.write(b'abc')
                sum1 = hashDirectory(tmp, index.name)

                with open(index.name, "rb") as f:
                    assert f.read(4) == b'BOB1'

                with open(os.path.join(tmp, "foo"), 'wb') as f:
                    f.write(b'qwer')
                sum2 = hashDirectory(tmp, index.name)

                with open(index.name, "rb") as f:
                    assert f.read(4) == b'BOB1'

                assert sum1 != sum2