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lean4/tests/elab/optionDecEq.lean
Garmelon 08eb78a5b2 chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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def optL (a : Option α) := if a = .none then 1 else 2
def optR (a : Option α) := if .none = a then 1 else 2
/-- info: 1 -/
#guard_msgs in #eval @optL Nat .none
/-- info: 2 -/
#guard_msgs in #eval optL (some ())
/-- info: 1 -/
#guard_msgs in #eval @optR Bool .none
/-- info: 2 -/
#guard_msgs in #eval optR (some 1.5)
-- test instance diamonds
example :
@Option.decidableEqNone α none = @Option.decidableNoneEq α none := by
with_reducible_and_instances rfl
section
variable {α : Type u} [DecidableEq α]
example (x : Option α) :
Option.instDecidableEq x none = Option.decidableEqNone x := by
with_reducible_and_instances rfl
example (x : Option α) :
Option.instDecidableEq none x = Option.decidableNoneEq x := by
with_reducible_and_instances rfl
end