@test_throws: don't throw an error if the same field is undefined in both the observed exception and the expected exception

[DilumAluthge]

Fixes #54082
Alternative to #54083

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This is another possible way to fix #54082.

[martinholters]

Could use a test. And that would probably reveal that this does not fix #54082 IIUC, as in that case, the thrown exception has .scope set while it is #undef in the expected one. So for the test case of #54082, what used to be a passing test would be "fixed" to be a failing test instead of thrown exception. (Similarly for #54032, btw.) Or am I missing something?

[nickrobinson251]

i don't think this fixes #54082

Please can tests be added?

[DilumAluthge]

And that would probably reveal that this does not fix #54082 IIUC, as in that case, the thrown exception has .scope set while it is #undef in the expected one. So for the test case of #54082, what used to be a passing test would be "fixed" to be a failing test instead of thrown exception.

Yeah, Martin and Nick are correct, this doesn't fix #54082 for the reason described.