diff options
Diffstat (limited to 'lib/hipe/test/maps_SUITE_data/maps_map_size.erl')
-rw-r--r-- | lib/hipe/test/maps_SUITE_data/maps_map_size.erl | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/hipe/test/maps_SUITE_data/maps_map_size.erl b/lib/hipe/test/maps_SUITE_data/maps_map_size.erl new file mode 100644 index 0000000000..25c8e5d4c7 --- /dev/null +++ b/lib/hipe/test/maps_SUITE_data/maps_map_size.erl @@ -0,0 +1,29 @@ +-module(maps_map_size). +-export([test/0]). + +test() -> + 0 = map_size(id(#{})), + 1 = map_size(id(#{a=>1})), + 1 = map_size(id(#{a=>"wat"})), + 2 = map_size(id(#{a=>1, b=>2})), + 3 = map_size(id(#{a=>1, b=>2, b=>"3","33"=><<"n">>})), + + true = map_is_size(#{a=>1}, 1), + true = map_is_size(#{a=>1, a=>2}, 1), + M = #{ "a" => 1, "b" => 2}, + true = map_is_size(M, 2), + false = map_is_size(M, 3), + true = map_is_size(M#{ "a" => 2}, 2), + false = map_is_size(M#{ "c" => 2}, 2), + + %% Error cases. + {'EXIT',{badarg,_}} = (catch map_size([])), + {'EXIT',{badarg,_}} = (catch map_size(<<1,2,3>>)), + {'EXIT',{badarg,_}} = (catch map_size(1)), + ok. + +map_is_size(M,N) when map_size(M) =:= N -> true; +map_is_size(_,_) -> false. + +%% Use this function to avoid compile-time evaluation of an expression. +id(I) -> I. |