lean4-htt/tests/elab/grind_decide_bool_issues.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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module
reset_grind_attrs%
example {P Q : Prop} [Decidable P] [Decidable Q] : (decide P || decide Q) = decide (P Q) := by grind
@[grind] theorem eq_head_or_mem_tail_of_mem_cons {a b : α} {l : List α} :
a ∈ b :: l → a = b a ∈ l := List.mem_cons.mp
attribute [grind] List.mem_cons_self List.mem_cons_of_mem
example [DecidableEq α] {l : List α} :
(y ∈ a :: l) = (y = a) y ∈ l := by -- This one is not `(y ∈ a :: l) = (y = a y ∈ l)`
grind
example [DecidableEq α] {l : List α} :
(y ∈ a :: l) = (y = a y ∈ l) := by
grind
-- but inserting some `decide`s fails:
example [BEq α] [LawfulBEq α] {l : List α} :
decide (y ∈ a :: l) = (y == a || decide (y ∈ l)) := by
grind
example [BEq α] (a b : α) : (a == b && a == b) = (a == b) := by
rw [Bool.eq_iff_iff]
grind
example [BEq α] (a b : α) : (a == b && a == b) = (a == b) := by
grind
example (a b : List Nat) : (a == b && b == a) = (a == b) := by
grind