Index: trunk/test/unit/org/openstreetmap/josm/data/osm/TagMapTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/data/osm/TagMapTest.java	(revision 9969)
+++ trunk/test/unit/org/openstreetmap/josm/data/osm/TagMapTest.java	(revision 9969)
@@ -0,0 +1,22 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.data.osm;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+/**
+ * Unit tests of the {@code TagMap} class.
+ */
+public class TagMapTest {
+
+    /**
+     * Unit test for {@link TagMap#toString}
+     */
+    @Test
+    public void testToString() {
+        assertEquals("TagMap[]", new TagMap().toString());
+        assertEquals("TagMap[key=val]", new TagMap(new String[]{"key", "val"}).toString());
+        assertEquals("TagMap[key=val,foo=bar]", new TagMap(new String[]{"key", "val", "foo", "bar"}).toString());
+    }
+}