Index: trunk/test/unit/org/openstreetmap/josm/plugins/PluginHandlerTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/plugins/PluginHandlerTest.java	(revision 9870)
+++ trunk/test/unit/org/openstreetmap/josm/plugins/PluginHandlerTest.java	(revision 9870)
@@ -0,0 +1,60 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.plugins;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.openstreetmap.josm.JOSMFixture;
+import org.openstreetmap.josm.plugins.PluginHandler.DeprecatedPlugin;
+import org.openstreetmap.josm.tools.Utils;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+
+/**
+ * Unit tests of {@link PluginHandler} class.
+ */
+public class PluginHandlerTest {
+
+    /**
+     * Setup test.
+     */
+    @BeforeClass
+    public static void setUp() {
+        JOSMFixture.createUnitTestFixture().init();
+    }
+
+    /**
+     * Unit test of methods {@link DeprecatedPlugin#equals} and {@link DeprecatedPlugin#hashCode}.
+     */
+    @Test
+    public void equalsContract() {
+        EqualsVerifier.forClass(DeprecatedPlugin.class).usingGetClass().verify();
+    }
+
+    /**
+     * Unit test of {@link PluginHandler#buildListOfPluginsToLoad}.
+     */
+    @Test
+    public void testBuildListOfPluginsToLoad() {
+        final String old = System.getProperty("josm.plugins");
+        try {
+            System.setProperty("josm.plugins",
+                    Utils.join(",", PluginHandler.DEPRECATED_PLUGINS) + "," +
+                    Utils.join(",", Arrays.asList(PluginHandler.UNMAINTAINED_PLUGINS)));
+            List<PluginInformation> list = PluginHandler.buildListOfPluginsToLoad(null, null);
+            assertNotNull(list);
+            assertTrue(list.isEmpty());
+        } finally {
+            if (old != null) {
+                System.setProperty("josm.plugins", old);
+            } else {
+                System.clearProperty("josm.plugins");
+            }
+        }
+    }
+}