Checking validity of sl-radio-group

[claviska]

Discussed in #987

^{Originally posted by nickcipriani October 29, 2022}
I'm having trouble checking the validity of an sl-radio-group. Here it is in the code share: https://lit.dev/playground/#gist=b2b8aa7b8de22b71bccbdabe176640ed

Even when no radio option is selected, the validity comes back true when checking for the invalid attribute on the group. The group has the required property so it should not be valid. Is there something I'm missing?

[claviska]

Looks like validity was initially incorrect when using required, and it also looks like it was getting out of sync as options were selected. This has been fixed in f140007 and two tests were added to prevent regressions. This fix will be available in the next release.