lean4-htt/tests/elab/catchThe.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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import Lean.Meta
open Lean
open Lean.Meta
universe u v w
abbrev M := ExceptT String MetaM
def testM {α} [BEq α] [ToString α] (x : M α) (expected : α) : MetaM Unit := do
let r ← x
match r with
| Except.ok a => unless a == expected do throwError m!"unexpected result {a}"
| Except.error e => throwError m!"FAILED: {e}"
@[noinline] def act1 : M Nat :=
throw <| Exception.error Syntax.missing "Error at act1"
def g1 : M Nat :=
tryCatchThe Exception
(tryCatchThe String act1 (fun ex => pure 100))
(fun ex => pure 200)
#guard_msgs in
#eval testM g1 200
@[noinline] def act2 : M Nat :=
throwThe String "hello world"
def g2 : M Nat :=
tryCatchThe Exception
(tryCatchThe String act2 (fun ex => pure 100))
(fun ex => pure 200)
#guard_msgs in
#eval testM g2 100
def h1 : CoreM Nat :=
pure 10
/-- info: 10 -/
#guard_msgs in
#eval h1
def h2 : MetaM Nat :=
pure 20
/-- info: 20 -/
#guard_msgs in
#eval h2