1 files changed, 21 insertions, 1 deletions
diff --git a/lib/hipe/test/basic_SUITE_data/basic_lists.erl b/lib/hipe/test/basic_SUITE_data/basic_lists.erl
index d229467b84..264a7f86f6 100644
--- a/lib/hipe/test/basic_SUITE_data/basic_lists.erl
+++ b/lib/hipe/test/basic_SUITE_data/basic_lists.erl
@@ -2,7 +2,8 @@
 %%%-------------------------------------------------------------------
 %%% Author: Kostis Sagonas
 %%%
-%%% Contains tests that manipulate and pattern match against lists.
+%%% Contains tests that manipulate and pattern match against lists
+%%% (perhaps by calling functions from the 'lists' module).
 %%%-------------------------------------------------------------------
 -module(basic_lists).
 
@@ -10,6 +11,7 @@
 
 test() ->
   ok = test_length(),
+  ok = test_lists_key(),
   ok = test_lists_and_strings(),
   ok.
 
@@ -32,6 +34,24 @@ len([], L) -> L.
 
 %%--------------------------------------------------------------------
 
+test_lists_key() ->
+  First = {x, 42.0},
+  Second = {y, -77},
+  Third = {z, [a, b, c], {5.0}},
+  List = [First, Second, Third],
+  {value, First} = key_search_find(42, 2, List),
+  ok.
+
+key_search_find(Key, Pos, List) ->
+  case lists:keyfind(Key, Pos, List) of
+    false ->
+      false = lists:keysearch(Key, Pos, List);
+    Tuple when is_tuple(Tuple) ->
+      {value, Tuple} = lists:keysearch(Key, Pos, List)
+  end.
+
+%%--------------------------------------------------------------------
+
 test_lists_and_strings() ->
   LL = ["H'A", " H'B", " H'C"],
   LL2 = lists:map(fun string:strip/1, LL),