lean4-htt/tests/elab/grind_ground_pat_issue.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 for a regression introduced by #11589
-/
section Mathlib.Order.Defs.LinearOrder
class LinearOrder (α : Type) extends Max α where
end Mathlib.Order.Defs.LinearOrder
section Mathlib.Data.Int.Order.Basic
instance instLinearOrder : LinearOrder Int where
end Mathlib.Data.Int.Order.Basic
section Mathlib.Order.Lattice
variable {α : Type}
class SemilatticeSup (α : Type) where
sup : ααα
instance SemilatticeSup.toMax [SemilatticeSup α] : Max α where max a b := SemilatticeSup.sup a b
instance LinearOrder.toSemilatticeSup {α : Type} [LinearOrder α] : SemilatticeSup α where
sup := max
end Mathlib.Order.Lattice
section Mathlib.Algebra.Order.Group.Unbundled.Abs
variable {α : Type} [SemilatticeSup α] [Neg α] {a b : α}
@[grind]
def abs (a : α) : α := max a (-a)
end Mathlib.Algebra.Order.Group.Unbundled.Abs
@[grind =] theorem max_def [Max α] [LE α] [DecidableLE α] (a b : α)
: max a b = if a ≤ b then b else a :=
sorry
theorem abs_lt_one_iff {a : Int} : abs a < 1 ↔ a = 0 := by
grind