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lean4/tests/elab/grind_pattern_cnstr.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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def map (f : α Option β) (as : List α) : List β :=
Id.run <| as.filterMapM (pure <| f ·)
theorem map_some {xs : List α} : map some xs = xs := by
sorry
theorem map_map {f : α Option β} {g : β Option γ} {xs : List α} :
map g (map f xs) = map (fun x => (f x).bind g) xs := by
sorry
grind_pattern map_map => map g (map f xs) where
f =/= some
g =/= some
/-- trace: [grind.ematch.instance] map_some: map some xs = xs -/
#guard_msgs (drop error, trace) in
set_option trace.grind.ematch.instance true in
example (xs : List Nat) (h : map some xs = ys) : False := by
grind only [= map_some, usr map_map]
theorem extract_empty {start stop : Nat} : (#[] : Array α).extract start stop = #[] :=
Array.extract_empty_of_size_le_start (Nat.zero_le _)
theorem extract_extract {as : Array α} {i j k l : Nat} :
(as.extract i j).extract k l = as.extract (i + k) (min (i + l) j) := by
apply Array.extract_extract
grind_pattern extract_extract => (as.extract i j).extract k l where
as =/= #[]
/-- trace: [grind.ematch.instance] extract_empty: #[].extract i j = #[] -/
#guard_msgs (drop error, trace) in
set_option trace.grind.ematch.instance true in
example (as : Array Nat) (h : #[].extract i j = as) : False := by
grind only [= extract_empty, usr extract_extract]
#guard_msgs (warning, drop error) in
example (as bs : List Nat) (h : as.filterMap some = bs) : False := by
grind (instances := 50) [= List.filterMap_filterMap] -- No warning because stdlib version has a constraint
#guard_msgs (warning, drop error) in
example (as bs : List Nat) (h : as.filterMap some = bs) : False := by
grind (instances := 50) [List.filterMap_filterMap] -- No warning because stdlib version has a constraint