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642 B
Unit tests for Any.unsafeExtract
scratch/main> builtins.mergeio
scratch/main> load unison-src/transcripts-using-base/base.u
scratch/main> add
Any.unsafeExtract is a way to extract the value contained in an Any. This is unsafe because it allows the programmer to coerce a value into any type, which would cause undefined behaviour if used to coerce a value to the wrong type.
test> Any.unsafeExtract.works =
use Nat !=
checks [1 == Any.unsafeExtract (Any 1),
not (1 == Any.unsafeExtract (Any 2)),
(Some 1) == Any.unsafeExtract (Any (Some 1))
]
scratch/main> add