Flatten Yaml Exception Test

[russellbanks]

#27 (comment)

Fully multiplatform tests can't be nested due to limitations in Javascript. This flattens YamlExceptionTest to describe itself as before but without any nesting.

If you're okay with these changes, I can do them for the other tests, with some refactactoring (splitting into smaller parts) to address #27

[charleskorn]

Thanks for the PR @russelbanks. I'd prefer to leave things as-is for the moment, kaml currently doesn't support JS as a target and there are no immediate plans to.

[russellbanks]

If we're able to get through #232 and potentially use the multiplatform SnakeYaml described there eventually, JS would be a target. I'd love to see Kaml be multiplatform

[charleskorn]

I'd love to see Kaml be multiplatform

Me too :) But I don't want to go to all the effort of refactoring the tests unless that becomes a reality.

[krzema12]

@charleskorn I think we're waiting for your go-ahead to flatten the rest of the tests, this PR being a pilot. Could you take a look?

[krzema12]

@charleskorn thanks for merging! @russellbanks are you fine with migrating the rest of the tests?

[russellbanks]

@russellbanks are you fine with migrating the rest of the tests?

Of course! More PRs incoming!