mock-consensus: ⭐ assert that TestNode<C>
is Send + Sync
#4470
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while refactoring the test node, i found that this is an assumption that isn't explicitly upheld, but is often expected by test code.
to prevent future changes/additions from breaking these properties, add some compile-time assertions that a
TestNode<()>
is bothSend
andSync
.✅ checklist before requesting a review
if this code contains consensus-breaking changes, i have added the
"consensus-breaking" label. otherwise, i declare my belief that there are not
consensus-breaking changes, for the following reason: