| 1 | -module(hope_fun_SUITE). |
| 2 | |
| 3 | %% Callbacks |
| 4 | -export( |
| 5 | [ all/0 |
| 6 | , groups/0 |
| 7 | ]). |
| 8 | |
| 9 | %% Test cases |
| 10 | -export( |
| 11 | [ t_specs/1 |
| 12 | , t_id/1 |
| 13 | , t_curry/1 |
| 14 | , t_compose_and_thread/1 |
| 15 | ]). |
| 16 | |
| 17 | |
| 18 | -define(GROUP, hope_fun). |
| 19 | |
| 20 | |
| 21 | %% ============================================================================ |
| 22 | %% Common Test callbacks |
| 23 | %% ============================================================================ |
| 24 | |
| 25 | all() -> |
| 26 | [ {group, ?GROUP} |
| 27 | ]. |
| 28 | |
| 29 | groups() -> |
| 30 | Tests = |
| 31 | [ t_specs |
| 32 | , t_id |
| 33 | , t_curry |
| 34 | , t_compose_and_thread |
| 35 | ], |
| 36 | Properties = [parallel], |
| 37 | [ {?GROUP, Properties, Tests} |
| 38 | ]. |
| 39 | |
| 40 | |
| 41 | %% ============================================================================= |
| 42 | %% Test cases |
| 43 | %% ============================================================================= |
| 44 | |
| 45 | t_specs(_) -> |
| 46 | [] = proper:check_specs(hope_fun). |
| 47 | |
| 48 | t_id(_Cfg) -> |
| 49 | X = foo, |
| 50 | X = hope_fun:id(X). |
| 51 | |
| 52 | t_curry(_Cfg) -> |
| 53 | Single = fun (X) -> X end, |
| 54 | Double = fun (X, Y) -> {X, Y} end, |
| 55 | Triple = fun (X, Y, Z) -> {X, Y, Z} end, |
| 56 | |
| 57 | F = hope_fun:curry(Single), |
| 58 | a = F(a), |
| 59 | |
| 60 | G1 = hope_fun:curry(Double), |
| 61 | G = G1(a), |
| 62 | {a, b} = G(b), |
| 63 | |
| 64 | H1 = hope_fun:curry(Triple), |
| 65 | H2 = H1(a), |
| 66 | H = H2(b), |
| 67 | {a, b, c} = H(c). |
| 68 | |
| 69 | t_compose_and_thread(_Cfg) -> |
| 70 | A2B = fun (a) -> b end, |
| 71 | B2C = fun (b) -> c end, |
| 72 | C2D = fun (c) -> d end, |
| 73 | Fs = [C2D, B2C, A2B], |
| 74 | d = (hope_fun:compose ( Fs ))(a), |
| 75 | d = (hope_fun:compose_right ( Fs ))(a), |
| 76 | d = (hope_fun:compose_left (lists:reverse(Fs) ))(a), |
| 77 | d = hope_fun:thread (lists:reverse(Fs), a). |