--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+fun test_set(s1, s2: Set[Int])
+do
+ s1.add(1)
+ s1.add(2)
+ s2.add(2)
+ s2.add(1)
+ #print s1.hash == s2.hash
+ print s1 == s2
+ print ""
+end
+
+test_set(new HashSet[Int], new HashSet[Int])
+test_set(new ArraySet[Int], new ArraySet[Int])
+test_set(new HashSet[Int], new ArraySet[Int])
+test_set(new ArraySet[Int], new HashSet[Int])