Index: /trunk/test/unit/org/openstreetmap/josm/tools/MultiMapTest.java
===================================================================
--- /trunk/test/unit/org/openstreetmap/josm/tools/MultiMapTest.java	(revision 9399)
+++ /trunk/test/unit/org/openstreetmap/josm/tools/MultiMapTest.java	(revision 9399)
@@ -0,0 +1,20 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.tools;
+
+import org.junit.Test;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+
+/**
+ * Unit tests of {@link MultiMap} class.
+ */
+public class MultiMapTest {
+
+    /**
+     * Unit test of methods {@link MultiMap#equals} and {@link MultiMap#hashCode}.
+     */
+    @Test
+    public void equalsContract() {
+        EqualsVerifier.forClass(MultiMap.class).usingGetClass().verify();
+    }
+}