mreichelt / RoomKspBug

Room KSP bug (minimal verifiable example)

Using:

• Room 2.4.0
• Kotlin 1.5.31
• KSP 1.5.31-1.0.1

To reproduce the bug:

1. Note that the Awesomeness enum is missing from User.kt
2. Note that AppDatabase.kt has two converters - one for Instant, and one for Awesomeness
3. Run InsertUserIntoDatabaseTest and see that it fails with:
   • java.time.format.DateTimeParseException: Text 'AWESOME' could not be parsed at index 0
   • This means that the string AWESOME has been written to the born_at field! ⚡️🤯
4. The reason this happens is that the generated code in UserDao_Impl.java contains these lines in the generated bind method:

        final String _tmp = __timeConverter.instantToValue(value.getBornAt());      // this is expected
        final Awesomeness _tmp_1 = __awesomenessConverter.valueToAwesomeness(_tmp); // ⚡️ fail - converting the String to Awesomeness
        final String _tmp_2 = __awesomenessConverter.awesomenessToValue(_tmp_1);