test/hope_list_SUITE.erl

   1 -module(hope_list_SUITE).
   2
   3 -include_lib("proper/include/proper.hrl").
   4
   5 %% Callbacks
   6 -export(
   7     [ all/0
   8     , groups/0
   9     ]).
  10
  11 %% Test cases
  12 -export(
  13     [ t_unique_preserve_order/1
  14     , t_hope_list_specs/1
  15     , t_map_rev/1
  16     , t_map_slow/1
  17     , t_map/1
  18     ]).
  19
  20
  21 -define(GROUP , hope_list).
  22
  23 -define(PROPTEST(A), true = proper:quickcheck(A())).
  24
  25
  26 %% ============================================================================
  27 %% Common Test callbacks
  28 %% ============================================================================
  29
  30 all() ->
  31     [{group, ?GROUP}].
  32
  33 groups() ->
  34     Tests =
  35         [ t_unique_preserve_order
  36         , t_hope_list_specs
  37         , t_map_rev
  38         , t_map_slow
  39         , t_map
  40         ],
  41     Properties = [parallel],
  42     [{?GROUP, Properties, Tests}].
  43
  44
  45 %% =============================================================================
  46 %%  Test cases
  47 %% =============================================================================
  48
  49 t_map_rev(_Cfg) ->
  50     F = fun (N) -> N + 1 end,
  51     [4, 3, 2] = hope_list:map_rev([1, 2, 3], F),
  52     []        = hope_list:map_rev([], F).
  53
  54 t_map_slow(_Cfg) ->
  55     F = fun (N) -> N + 1 end,
  56     [2, 3, 4] = hope_list:map_slow([1, 2, 3], F),
  57     []        = hope_list:map_slow([], F).
  58
  59 t_map(_Cfg) ->
  60     F = fun (N) -> N + 1 end,
  61     Xs = lists:seq(1, 5010),
  62     Ys = lists:map(F, Xs),
  63     Ys = hope_list:map(Xs, F),
  64     [] = hope_list:map([], F).
  65
  66 t_unique_preserve_order(_Cfg) ->
  67     ?PROPTEST(prop_unique_preserve_order).
  68
  69 prop_unique_preserve_order() ->
  70     ?FORALL(L, list(),
  71             begin
  72                 Duplicates = L -- lists:usort(L),
  73                 hope_list:unique_preserve_order(L) ==
  74                     lists:reverse(lists:reverse(L) -- Duplicates)
  75             end).
  76
  77 t_hope_list_specs(_) ->
  78     [] = proper:check_specs(hope_list).