lean4-htt/tests/elab/1870.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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set_option pp.mvars false
/--
error: Type mismatch
congrArg ?_ (congrArg ?_ ?_)
has type
?_ (?_ ?_) = ?_ (?_ ?_)
but is expected to have type
OfNat.ofNat 0 = OfNat.ofNat 1
-/
#guard_msgs in
theorem ex1 : (@OfNat.ofNat Nat 0 Zero.toOfNat0) = @OfNat.ofNat Nat 1 One.toOfNat1 := by
refine congrArg _ (congrArg _ ?_)
rfl
/--
error: Tactic `apply` failed: could not unify the conclusion of `@congrArg`
?_ ?_ = ?_ ?_
with the goal
OfNat.ofNat 0 = OfNat.ofNat 1
Note: The full type of `@congrArg` is
∀ {α : Sort _} {β : Sort _} {a₁ a₂ : α} (f : α → β), a₁ = a₂ → f a₁ = f a₂
⊢ OfNat.ofNat 0 = OfNat.ofNat 1
-/
#guard_msgs in
example : (@OfNat.ofNat Nat 0 Zero.toOfNat0) = @OfNat.ofNat Nat 1 One.toOfNat1 := by
apply congrArg
apply congrArg
apply rfl
/--
error: Tactic `apply` failed: could not unify the conclusion of `@congrArg`
?_ ?_ = ?_ ?_
with the goal
OfNat.ofNat 0 = OfNat.ofNat 1
Note: The full type of `@congrArg` is
∀ {α : Sort _} {β : Sort _} {a₁ a₂ : α} (f : α → β), a₁ = a₂ → f a₁ = f a₂
⊢ OfNat.ofNat 0 = OfNat.ofNat 1
-/
#guard_msgs in
theorem ex2 : (@OfNat.ofNat Nat 0 Zero.toOfNat0) = @OfNat.ofNat Nat 1 One.toOfNat1 := by
apply congrArg
apply congrArg
apply rfl