lean4-htt/tests/elab/grindDeprecated.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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/-!
Test that `grind` flags deprecated theorems.
See https://github.com/leanprover/lean4/issues/11582
-/
set_option backward.grind.inferPattern true -- Use old pattern inference (no suggestions)
set_option linter.deprecated true -- Enable the deprecated linter (test framework disables all linters)
def foo : Nat := 0
@[deprecated "use foo_eq_zero' instead" (since := "2025-01-01")]
theorem foo_eq_zero : foo = 0 := rfl
/-- warning: `foo_eq_zero` has been deprecated: use foo_eq_zero' instead -/
#guard_msgs in
example : foo = foo := by grind [foo_eq_zero]
-- Also test the `-` syntax for erasing theorems
@[grind]
theorem bar_eq_zero : foo = 0 := rfl
-- This theorem is deprecated AND marked with @[grind], so we can erase it
@[deprecated bar_eq_zero (since := "2025-01-01"), grind]
theorem bar_eq_zero' : foo = 0 := rfl
/-- warning: `bar_eq_zero'` has been deprecated: Use `bar_eq_zero` instead -/
#guard_msgs in
example : foo = foo := by grind [- bar_eq_zero']