lean4-htt/tests/elab/simpExtraArgsBug.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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variable {X : Type u} {Y : Type v} {Z : Type w}
def comp (f : Y→Z) (g : X→Y) (x : X) := f (g x)
def swap (f : X→Y→Z) (y : Y) (x : X) := f x y
def diag (f : X→X→Y) (x : X) := (f x x)
@[simp] def comp_reduce (f : Y→Z) (g : X→Y) (x : X) : (comp f g x) = f (g x) := by simp[comp]; done
def swap_reduce (f : X→Y→Z) (y : Y) (x : X) : (swap f y x) = f x y := by simp[swap]; done
@[simp] def diag_reduce (f : X→X→Y) (x : X) : (diag f x) = f x x := by simp[diag]; done
def subs : (X→Y→Z) → (X→Y) → (X→Z) := (swap (comp (comp diag) (comp comp (swap comp))))
def foo {W} := ((comp comp (swap comp)) : (X→Y) → _ → W → X → Z)
def subs_reduce' (f : X→Y→Z) (g : X→Y) (x : X) : comp (comp diag) foo g f x = (f x) (g x) :=
by
simp
simp [foo, swap, comp]
def subs_reduce'' (f : X→Y→Z) (g : X→Y) (x : X) : comp (comp diag) foo g f x = (f x) (g x) :=
by
simp
admit