Adding topology test suite.
diff --git a/core/trivial/src/test/java/org/onlab/onos/net/trivial/topology/impl/DefaultTopologyProviderTest.java b/core/trivial/src/test/java/org/onlab/onos/net/trivial/topology/impl/DefaultTopologyProviderTest.java
new file mode 100644
index 0000000..2312996
--- /dev/null
+++ b/core/trivial/src/test/java/org/onlab/onos/net/trivial/topology/impl/DefaultTopologyProviderTest.java
@@ -0,0 +1,162 @@
+package org.onlab.onos.net.trivial.topology.impl;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.onos.event.Event;
+import org.onlab.onos.event.impl.TestEventDispatcher;
+import org.onlab.onos.net.Device;
+import org.onlab.onos.net.Link;
+import org.onlab.onos.net.device.DeviceEvent;
+import org.onlab.onos.net.link.LinkEvent;
+import org.onlab.onos.net.provider.AbstractProviderService;
+import org.onlab.onos.net.provider.ProviderId;
+import org.onlab.onos.net.topology.GraphDescription;
+import org.onlab.onos.net.topology.TopologyProvider;
+import org.onlab.onos.net.topology.TopologyProviderRegistry;
+import org.onlab.onos.net.topology.TopologyProviderService;
+import org.onlab.onos.net.trivial.device.impl.SimpleDeviceManager;
+import org.onlab.onos.net.trivial.link.impl.SimpleLinkManager;
+
+import java.util.List;
+import java.util.Set;
+
+import static com.google.common.collect.ImmutableSet.of;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.onlab.junit.TestTools.assertAfter;
+import static org.onlab.onos.net.device.DeviceEvent.Type.DEVICE_ADDED;
+import static org.onlab.onos.net.link.LinkEvent.Type.LINK_ADDED;
+import static org.onlab.onos.net.trivial.topology.impl.SimpleTopologyManagerTest.device;
+import static org.onlab.onos.net.trivial.topology.impl.SimpleTopologyManagerTest.link;
+
+/**
+ * Test of the default topology provider implementation.
+ */
+public class DefaultTopologyProviderTest {
+
+ private DefaultTopologyProvider provider = new DefaultTopologyProvider();
+ private TestTopoRegistry topologyService = new TestTopoRegistry();
+ private TestDeviceService deviceService = new TestDeviceService();
+ private TestLinkService linkService = new TestLinkService();
+ private TestTopoProviderService providerService;
+
+ @Before
+ public void setUp() {
+ provider.deviceService = deviceService;
+ provider.linkService = linkService;
+ provider.providerRegistry = topologyService;
+ provider.activate();
+ }
+
+ @After
+ public void tearDown() {
+ provider.deactivate();
+ provider.providerRegistry = null;
+ provider.deviceService = null;
+ provider.linkService = null;
+ }
+
+ private void validateSubmission() {
+ assertNotNull("registration expected", providerService);
+ assertEquals("incorrect providert", provider, providerService.provider());
+ assertNotNull("topo change should be submitted", providerService.graphDesc);
+ assertEquals("incorrect vertex count", 6, providerService.graphDesc.vertexes().size());
+ assertEquals("incorrect edge count", 10, providerService.graphDesc.edges().size());
+ }
+
+ @Test
+ public void basics() {
+ assertAfter(100, new Runnable() {
+ @Override
+ public void run() {
+ validateSubmission();
+ }
+ });
+ }
+
+ @Test
+ public void eventDriven() {
+ assertAfter(100, new Runnable() {
+ @Override
+ public void run() {
+ validateSubmission();
+ deviceService.post(new DeviceEvent(DEVICE_ADDED, device("z"), null));
+ linkService.post(new LinkEvent(LINK_ADDED, link("z", 1, "a", 4)));
+ validateSubmission();
+ }
+ });
+ }
+
+
+ private class TestTopoRegistry implements TopologyProviderRegistry {
+
+ @Override
+ public TopologyProviderService register(TopologyProvider provider) {
+ providerService = new TestTopoProviderService(provider);
+ return providerService;
+ }
+
+ @Override
+ public void unregister(TopologyProvider provider) {
+ }
+
+ @Override
+ public Set<ProviderId> getProviders() {
+ return null;
+ }
+ }
+
+ private class TestTopoProviderService
+ extends AbstractProviderService<TopologyProvider>
+ implements TopologyProviderService {
+ GraphDescription graphDesc;
+
+ protected TestTopoProviderService(TopologyProvider provider) {
+ super(provider);
+ }
+
+ @Override
+ public void topologyChanged(GraphDescription graphDescription, List<Event> reasons) {
+ graphDesc = graphDescription;
+ }
+ }
+
+ private class TestDeviceService extends SimpleDeviceManager {
+ TestDeviceService() {
+ eventDispatcher = new TestEventDispatcher();
+ eventDispatcher.addSink(DeviceEvent.class, listenerRegistry);
+ }
+
+ @Override
+ public Iterable<Device> getDevices() {
+ return of(device("a"), device("b"),
+ device("c"), device("d"),
+ device("e"), device("f"));
+ }
+
+ void post(DeviceEvent event) {
+ eventDispatcher.post(event);
+ }
+ }
+
+ private class TestLinkService extends SimpleLinkManager {
+ TestLinkService() {
+ eventDispatcher = new TestEventDispatcher();
+ eventDispatcher.addSink(LinkEvent.class, listenerRegistry);
+ }
+
+ @Override
+ public Iterable<Link> getLinks() {
+ return of(link("a", 1, "b", 1), link("b", 1, "a", 1),
+ link("b", 2, "c", 1), link("c", 1, "b", 2),
+ link("c", 2, "d", 1), link("d", 1, "c", 2),
+ link("d", 2, "a", 2), link("a", 2, "d", 2),
+ link("e", 1, "f", 1), link("f", 1, "e", 1));
+ }
+
+ void post(LinkEvent event) {
+ eventDispatcher.post(event);
+ }
+ }
+}
\ No newline at end of file