Add conformance tests for Final dataclass fields #1741
Merged
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Add conformance tests for the spec changes merged in #1669
None of the tested type checkers support nesting Final within ClassVar in dataclasses yet, so they all fail the automated conformance check. Mypy also requires a Final assignment in a dataclass body to be "initialized" (thus effectively requiring final dataclass fields to have a default). But all support the core behavior of defining a final dataclass field, so I marked them all as Partial.