-module(hope_result_SUITE).
-%% TODO: Import only what is used.
--include_lib("proper/include/proper.hrl").
-
%% Callbacks
-export(
[ all/0
, t_pipe_error/1
, t_hope_result_specs/1
, t_lift_exn/1
+ , t_lift_map_exn/1
, t_return/1
, t_map/1
+ , t_map_error/1
+ , t_tag_error/1
]).
],
LiftTests =
[ t_lift_exn
+ , t_lift_map_exn
],
OtherTests =
[ t_return
, t_map
+ , t_map_error
+ , t_tag_error
],
Properties = [parallel],
[ {?GROUP_PIPE, Properties, PipeTests}
{error, {Class, Reason}} = G(ok),
{error, {Label, {Class, Reason}}} = H(ok).
+t_lift_map_exn(_Cfg) ->
+ FOk = fun ({}) -> foo end,
+ FExn = fun ({}) -> throw(baz) end,
+ MapOk = fun (foo) -> bar end,
+ MapOkThrows = fun (foo) -> throw(exn_from_ok_map) end,
+ MapError = fun ({throw, baz}) -> qux end,
+ MapErrorThrows = fun ({throw, baz}) -> throw(exn_from_error_map) end,
+ GOk = hope_result:lift_map_exn(FOk , MapOk , MapError),
+ GOkThrows = hope_result:lift_map_exn(FOk , MapOkThrows, MapError),
+ GError = hope_result:lift_map_exn(FExn, MapOk , MapError),
+ GErrorThrows = hope_result:lift_map_exn(FExn, MapOk , MapErrorThrows),
+ {ok, bar} = GOk({}),
+ {error, qux} = GError({}),
+ ok =
+ try
+ must_not_return = GOkThrows({})
+ catch throw:exn_from_ok_map ->
+ ok
+ end,
+ ok =
+ try
+ must_not_return = GErrorThrows({})
+ catch throw:exn_from_error_map ->
+ ok
+ end.
+
t_return(_Cfg) ->
X = foo,
{ok, X} = hope_result:return(X).
F = fun (foo) -> Y end,
{ok, Y} = hope_result:map({ok, X}, F),
{error, X} = hope_result:map({error, X}, F).
+
+t_map_error(_Cfg) ->
+ X = foo,
+ Y = bar,
+ XtoY = fun (foo) -> Y end,
+ {ok , X} = hope_result:map_error({ok , X}, XtoY),
+ {error, Y} = hope_result:map_error({error, X}, XtoY).
+
+t_tag_error(_Cfg) ->
+ X = foo,
+ Tag = bar,
+ {ok , X } = hope_result:tag_error({ok , X}, Tag),
+ {error, {Tag, X}} = hope_result:tag_error({error, X}, Tag).