diff options
Diffstat (limited to 'lib/hipe/test/maps_SUITE_data/maps_put_map_exact.erl')
-rw-r--r-- | lib/hipe/test/maps_SUITE_data/maps_put_map_exact.erl | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/hipe/test/maps_SUITE_data/maps_put_map_exact.erl b/lib/hipe/test/maps_SUITE_data/maps_put_map_exact.erl new file mode 100644 index 0000000000..1cfcd80180 --- /dev/null +++ b/lib/hipe/test/maps_SUITE_data/maps_put_map_exact.erl @@ -0,0 +1,28 @@ +%% -*- erlang-indent-level: 2 -*- +%%------------------------------------------------------------------------- +-module(maps_put_map_exact). + +-export([test/0]). + +test() -> + false = exact_guard(#{b => a}), + false = exact_guard(not_a_map), + true = exact_guard(#{a => false}), + #{a := true} = exact_update(#{a => false}), + {'EXIT', {badarg, [{?MODULE, exact_update, 1, _}|_]}} + = (catch exact_update(not_a_map)), + {'EXIT', {badarg, [{?MODULE, exact_update, 1, _}|_]}} + = (catch exact_update(#{})), + ok = exact_guard_clause(#{a => yes}), + {'EXIT', {function_clause, [{?MODULE, exact_guard_clause, _, _}|_]}} + = (catch exact_guard_clause(#{})), + {'EXIT', {function_clause, [{?MODULE, exact_guard_clause, _, _}|_]}} + = (catch exact_guard_clause(not_a_map)), + ok. + +exact_guard(M) when is_map(M#{a := b}) -> true; +exact_guard(_) -> false. + +exact_update(M) -> M#{a := true}. + +exact_guard_clause(M) when is_map(M#{a := 42}) -> ok. |