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-rw-r--r--gen/test/map_dict_test.erl13
1 files changed, 12 insertions, 1 deletions
diff --git a/gen/test/map_dict_test.erl b/gen/test/map_dict_test.erl
index 24255f1..03be65a 100644
--- a/gen/test/map_dict_test.erl
+++ b/gen/test/map_dict_test.erl
@@ -1,7 +1,7 @@
-module(map_dict_test).
-compile(no_auto_import).
--export([from_list_test/0, has_key_test/0, new_test/0, fetch_test/0, put_test/0, map_values_test/0, keys_test/0, values_test/0, take_test/0, drop_test/0, merge_test/0, delete_test/0, update_test/0]).
+-export([from_list_test/0, has_key_test/0, new_test/0, fetch_test/0, put_test/0, map_values_test/0, keys_test/0, values_test/0, take_test/0, drop_test/0, merge_test/0, delete_test/0, update_test/0, fold_test/0]).
from_list_test() ->
expect:equal(map_dict:size(map_dict:from_list([{4, 0}, {1, 0}])), 2).
@@ -115,3 +115,14 @@ update_test() ->
{<<"b">>, 1},
{<<"c">>, 2},
{<<"z">>, 0}])).
+
+fold_test() ->
+ Dict = map_dict:from_list([{<<"a">>, 0},
+ {<<"b">>, 1},
+ {<<"c">>, 2},
+ {<<"d">>, 3}]),
+ Add = fun(_, V, Acc) -> V + Acc end,
+ expect:equal(map_dict:fold(Dict, 0, Add), 6),
+ Concat = fun(K, _, Acc) -> str:append(Acc, K) end,
+ expect:equal(map_dict:fold(Dict, <<"">>, Concat), <<"abcd">>),
+ expect:equal(map_dict:fold(map_dict:from_list([]), 0, Add), 0).