test_zipfile.py 文件源码

def test_is_zip_erroneous_file(self):
        """Check that is_zipfile() correctly identifies non-zip files."""
        # - passing a filename
        with open(TESTFN, "w") as fp:
            fp.write("this is not a legal zip file\n")
        chk = zipfile.is_zipfile(TESTFN)
        self.assertFalse(chk)
        # - passing a file object
        with open(TESTFN, "rb") as fp:
            chk = zipfile.is_zipfile(fp)
            self.assertTrue(not chk)
        # - passing a file-like object
        fp = io.BytesIO()
        fp.write(b"this is not a legal zip file\n")
        chk = zipfile.is_zipfile(fp)
        self.assertTrue(not chk)
        fp.seek(0, 0)
        chk = zipfile.is_zipfile(fp)
        self.assertTrue(not chk)