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lean4/tests/elab/never_extract.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 test1 (a : Nat) : Nat :=
let f a :=
dbg_trace s!"{a}"
a
let g a :=
dbg_trace s!"{a + 0}"
a
(f a) + (g a)
/--
info: 1
1
---
info: 2
-/
#guard_msgs in
#eval test1 1
structure Twice (α : Type u) where
first : α
second : α
first_eq_second : first = second
instance : Coe α (Twice α) where
coe x := x, x, rfl
/--
info: hello
hello
---
info: { first := 5, second := 5, first_eq_second := _ }
-/
#guard_msgs in
#eval ((dbg_trace "hello"; 5 : Nat) : Twice Nat)