lean4-htt/tests/elab/library_suggestions_override.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.LibrarySuggestions.Default
/-!
# Test that set_library_suggestions can override the default
This test verifies that even after importing Default (which sets Sine Qua Non as the default),
we can override it with a different selector.
-/
-- First, verify the default is set by using it
example {x : Dyadic} {prec : Int} : x.roundDown prec ≤ x := by
grind +suggestions
-- Now override with an empty selector
set_library_suggestions (fun _ _ => pure #[])
-- Verify that grind +suggestions now fails because the empty selector provides no suggestions
/--
error: `grind` failed
case grind
x : Dyadic
prec : Int
h : ¬x.roundDown prec ≤ x
⊢ False
[grind] Goal diagnostics
[facts] Asserted facts
[prop] ¬x.roundDown prec ≤ x
[eqc] False propositions
[prop] x.roundDown prec ≤ x
[cutsat] Assignment satisfying linear constraints
[assign] prec := 2
[linarith] Linarith assignment for `Dyadic`
[assign] x := -1
[assign] x.roundDown prec := 0
-/
#guard_msgs in
example {x : Dyadic} {prec : Int} : x.roundDown prec ≤ x := by
grind +suggestions