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add tests to CCFQueue

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This commit is contained in:
Simon Cruanes 2015-03-15 22:51:10 +01:00
parent adcff57e4c
commit 2d9988f080
1 changed files with 27 additions and 0 deletions
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27
src/data/CCFQueue.ml
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@ -232,10 +232,20 @@ let init q =
try fst (take_back_exn q)
with Empty -> q
(*$Q
(Q.list Q.int) (fun l -> \
l = [] || (of_list l |> init |> to_list = List.rev (List.tl (List.rev l))))
*)
let tail q =
try snd (take_front_exn q)
with Empty -> q
(*$Q
(Q.list Q.int) (fun l -> \
l = [] || (of_list l |> tail |> to_list = List.tl l))
*)
let add_seq_front seq q =
let q = ref q in
seq (fun x -> q := cons x !q);
@ -260,6 +270,11 @@ let rec to_seq : 'a. 'a t -> 'a sequence
to_seq q' (fun (x,y) -> k x; k y);
_digit_to_seq tail k
(*$Q
(Q.list Q.int) (fun l -> \
of_list l |> to_seq |> Sequence.to_list = l)
*)
let append q1 q2 =
match q1, q2 with
| Shallow Zero, _ -> q2
@ -359,6 +374,11 @@ let rec _equal_klist eq l1 l2 = match l1(), l2() with
let equal eq q1 q2 = _equal_klist eq (to_klist q1) (to_klist q2)
(*$T
let q1 = 1 -- 10 and q2 = append (1 -- 5) (6 -- 10) in \
equal (=) q1 q2
*)
let (--) a b =
let rec up_to q a b = if a = b
then snoc q a
@ -367,3 +387,10 @@ let (--) a b =
else down_to (snoc q a) (a-1) b
in
if a <= b then up_to empty a b else down_to empty a b
(*$T
1 -- 5 |> to_list = [1;2;3;4;5]
5 -- 1 |> to_list = [5;4;3;2;1]
0 -- 0 |> to_list = [0]
*)