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-rw-r--r--lib/stdlib/test/dict_SUITE.erl11
-rw-r--r--lib/stdlib/test/dict_test_lib.erl1
2 files changed, 11 insertions, 1 deletions
diff --git a/lib/stdlib/test/dict_SUITE.erl b/lib/stdlib/test/dict_SUITE.erl
index 0223240479..69814e12ce 100644
--- a/lib/stdlib/test/dict_SUITE.erl
+++ b/lib/stdlib/test/dict_SUITE.erl
@@ -17,7 +17,7 @@
%% %CopyrightEnd%
%%
-%% This module tests the ordsets, sets, and gb_sets modules.
+%% This module tests the orddict, dict, and gb_trees modules.
%%
-module(dict_SUITE).
@@ -68,6 +68,7 @@ create_1(M) ->
D0 = M(empty, []),
[] = M(to_list, D0),
0 = M(size, D0),
+ true = M(is_empty, D0),
D0.
store(Config) when is_list(Config) ->
@@ -81,6 +82,14 @@ store_1(List, M) ->
D1 = foldl(fun({K,V}, Dict) -> M(enter, {K,V,Dict}) end,
M(empty, []), List),
true = M(equal, {D0,D1}),
+ case List of
+ [] ->
+ true = M(is_empty, D0),
+ true = M(is_empty, D1);
+ [_|_] ->
+ false = M(is_empty, D0),
+ false = M(is_empty, D1)
+ end,
D0.
%%%
diff --git a/lib/stdlib/test/dict_test_lib.erl b/lib/stdlib/test/dict_test_lib.erl
index e308fd0721..4fdb4fa0bd 100644
--- a/lib/stdlib/test/dict_test_lib.erl
+++ b/lib/stdlib/test/dict_test_lib.erl
@@ -28,6 +28,7 @@ new(Mod, Eq) ->
(from_list, L) -> from_list(Mod, L);
(module, []) -> Mod;
(size, D) -> Mod:size(D);
+ (is_empty, D) -> Mod:is_empty(D);
(to_list, D) -> to_list(Mod, D)
end.