Index: trunk/test/unit/org/openstreetmap/josm/io/UrlPatternsTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/io/UrlPatternsTest.java	(revision 15784)
+++ trunk/test/unit/org/openstreetmap/josm/io/UrlPatternsTest.java	(revision 15784)
@@ -0,0 +1,41 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.io;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import org.junit.Test;
+import org.openstreetmap.josm.TestUtils;
+
+/**
+ * Unit tests of {@link UrlPatterns}.
+ */
+public class UrlPatternsTest {
+
+    private static final List<Class<? extends Enum<?>>> patterns = Arrays.asList(
+            UrlPatterns.GeoJsonUrlPattern.class,
+            UrlPatterns.GpxUrlPattern.class,
+            UrlPatterns.NoteUrlPattern.class,
+            UrlPatterns.OsmChangeUrlPattern.class,
+            UrlPatterns.OsmUrlPattern.class);
+
+    /**
+     * Unit test of {@link UrlPatterns} enums.
+     */
+    @Test
+    public void testUrlPatternEnums() {
+        patterns.forEach(TestUtils::superficialEnumCodeCoverage);
+    }
+
+    /**
+     * Unit test of {@link UrlPatterns} syntax validity.
+     */
+    @Test
+    public void testUrlPatterns() {
+        assertTrue(patterns.stream().flatMap(c -> Arrays.stream(c.getEnumConstants())).map(t -> ((UrlPattern) t).pattern())
+                .map(Pattern::compile).count() > 0);
+    }
+}