lean4-htt/tests/elab_fail/2273.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

30 lines
694 B
Text

import Lean
class P (n : Nat)
theorem foo (n : Nat) [P n] : True := trivial
-- This should fail, as by default `apply` does not allow synthesis failures.
example : True := by
apply foo 37
open Lean Meta Elab Tactic Term
/--
In mathlib4 we add the syntax:
`apply (config := cfg) e` is like `apply e` but allows you to provide a configuration
`cfg : ApplyConfig` to pass to the underlying apply operation.
For this test we just hard code the `allowSynthFailures` option into `apply'`.
-/
elab "apply'" e:term : tactic => do
evalApplyLikeTactic (·.apply · { allowSynthFailures := true }) e
def instP (n : Nat) : P n := {}
example : True := by
apply' foo
apply instP
exact 37