Method test_blob_closed

Lib/test/test_sqlite3/test_dbapi.py:1506–1533

(self)

    def test_blob_closed(self):
        with memory_database() as cx:
            cx.execute("create table test(b blob)")
            cx.execute("insert into test values (zeroblob(100))")
            blob = cx.blobopen("test", "b", 1)
            blob.close()

            msg = "Cannot operate on a closed blob"
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.read()
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.write(b"")
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.seek(0)
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.tell()
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.__enter__()
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob.__exit__(None, None, None)
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                len(blob)
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob[0]
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob[0:1]
            with self.assertRaisesRegex(sqlite.ProgrammingError, msg):
                blob[0] = b""

    def test_blob_closed_db_read(self):
        with memory_database() as cx: