lean4-htt/tests/elab/439.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
universe u
structure Fn (E I : Sort u) := (exp : E) (imp : I)
instance (E I : Sort u) : CoeFun (Fn E I) (fun _ => I) := {coe := fun K => K.imp}
class Bar.{w} (P : Sort u) :=
fn : P -> Sort w
variable {P : Sort u} (B : Bar P)
variable (fn : Fn ((p : P) -> B.fn p) ({p : P} -> B.fn p))
#check (@fn : {p : P} → Bar.fn p) -- Result is as expected (implicit)
/-
fn.imp : {p : P} → Bar.fn p
-/
variable (p : P)
variable (Bp : Bar.fn p)
/--
error: Function expected at
fn.imp
but this term has type
Bar.fn ?_
Note: Expected a function because this term is being applied to the argument
Bp
-/
#guard_msgs in
#check fn Bp
/--
error: Function expected at
fn.imp
but this term has type
Bar.fn ?_
Note: Expected a function because this term is being applied to the argument
p
-/
#guard_msgs in
#check fn p
#check fn (p := p)
variable (fn' : Fn ((p : P) -> B.fn p -> B.fn p) ({p : P} -> B.fn p -> B.fn p))
#check fn' Bp
/--
error: Application type mismatch: The argument
p
has type
P
but is expected to have type
Bar.fn ?_
in the application
fn'.imp p
-/
#guard_msgs in
#check fn' p