Index: trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.java	(revision 15586)
+++ trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.java	(revision 15591)
@@ -325,4 +325,17 @@
     }
 
+    /**
+     * Test case for {@link Functions#trim_list}
+     */
+    @Test
+    public void testTrimList() {
+        List<String> trimmed = Functions.trim_list(Arrays.asList(" A1 ", "A2", " A3", "A4 ", ""));
+        assertEquals(4, trimmed.size());
+        assertEquals("A1", trimmed.get(0));
+        assertEquals("A2", trimmed.get(1));
+        assertEquals("A3", trimmed.get(2));
+        assertEquals("A4", trimmed.get(3));
+    }
+
     @Test
     public void testTicket8568() throws Exception {