test_zipfile.py 文件源码

def test_damaged_zipfile(self):
        """Check that zipfiles with missing bytes at the end raise BadZipFile."""
        # - Create a valid zip file
        fp = io.BytesIO()
        with zipfile.ZipFile(fp, mode="w") as zipf:
            zipf.writestr("foo.txt", b"O, for a Muse of Fire!")
        zipfiledata = fp.getvalue()

        # - Now create copies of it missing the last N bytes and make sure
        #   a BadZipFile exception is raised when we try to open it
        for N in range(len(zipfiledata)):
            fp = io.BytesIO(zipfiledata[:N])
            self.assertRaises(zipfile.BadZipFile, zipfile.ZipFile, fp)