Prevent eunit from timing out when running Triq tests - erlang

Question

How can I change the timeout for the eunit in rebar3 config?
My eunit runner is timing out when I run property-based Triq tests:
===> Verifying dependencies...
===> Compiling ierminer
===> Performing EUnit tests...
Pending:
test_ec:ec_prop_test/0
%% Unknown error: timeout
undefined
%% Unknown error: {blame,[3,1]}
Finished in ? seconds
3 tests, 0 failures, 3 cancelled
===> Error running tests
Here is my property specification:
-module(ec_property).
-include_lib("triq/include/triq.hrl").
prop_append() ->
?FORALL({Xs,Ys},{list(int()),list(int())},
lists:reverse(Xs++Ys)
==
lists:reverse(Ys) ++ lists:reverse(Xs)).
prop_valid_started() ->
?FORALL({Type, Items, Size},
{oneof([left,right]), non_empty(list(any())), pos_integer()},
element(1, ec:start(Type, Items, Size)) == ok).
and here is how I call it from my eunit test function:
ec_prop_test() -> ?assert(ec_property:check()).

Answer 1

Use a test generator function to specify a timeout longer than the default 5 seconds:
ec_prop_test_() ->
{timeout, 30, ?_assert(ec_property:check())}.
Note the trailing underscore added to the function name—that's how you create a test generator. Note also the leading underscore on _assert, which is one way to create a test object.
Change the 30 in the example to whatever number of seconds you need.