ONOS-542 Defining application subsystem interfaces & public constructs.

Change-Id: Iba0d2cb69dace5beee8a68def9918059ce755b5c
diff --git a/core/net/src/test/java/org/onosproject/app/impl/ApplicationManagerTest.java b/core/net/src/test/java/org/onosproject/app/impl/ApplicationManagerTest.java
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@@ -0,0 +1,197 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.app.impl;
+
+import com.google.common.collect.ImmutableSet;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.app.ApplicationEvent;
+import org.onosproject.app.ApplicationListener;
+import org.onosproject.app.ApplicationState;
+import org.onosproject.app.ApplicationStoreAdapter;
+import org.onosproject.common.app.ApplicationArchive;
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.DefaultApplication;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.event.impl.TestEventDispatcher;
+
+import java.io.InputStream;
+import java.net.URI;
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Set;
+
+import static org.junit.Assert.assertEquals;
+import static org.onosproject.app.ApplicationEvent.Type.*;
+import static org.onosproject.app.ApplicationState.ACTIVE;
+import static org.onosproject.app.ApplicationState.INSTALLED;
+import static org.onosproject.app.DefaultApplicationDescriptionTest.*;
+
+/**
+ * Test of the application manager implementation.
+ */
+public class ApplicationManagerTest {
+
+    public static final DefaultApplicationId APP_ID = new DefaultApplicationId(1, APP_NAME);
+
+    private ApplicationManager mgr = new ApplicationManager();
+    private ApplicationListener listener = new TestListener();
+
+    @Before
+    public void setUp() {
+        mgr.eventDispatcher = new TestEventDispatcher();
+        mgr.featuresService = new TestFeaturesService();
+        mgr.store = new TestStore();
+        mgr.activate();
+        mgr.addListener(listener);
+    }
+
+    @After
+    public void tearDown() {
+        mgr.removeListener(listener);
+        mgr.deactivate();
+    }
+
+    private void validate(Application app) {
+        assertEquals("incorrect name", APP_NAME, app.id().name());
+        assertEquals("incorrect version", VER, app.version());
+        assertEquals("incorrect origin", ORIGIN, app.origin());
+
+        assertEquals("incorrect description", DESC, app.description());
+        assertEquals("incorrect features URI", FURL, app.featuresRepo().get());
+        assertEquals("incorrect features", FEATURES, app.features());
+    }
+
+    @Test
+    public void install() {
+        InputStream stream = ApplicationArchive.class.getResourceAsStream("app.zip");
+        Application app = mgr.install(stream);
+        validate(app);
+        assertEquals("incorrect features URI used", app.featuresRepo().get(),
+                     ((TestFeaturesService) mgr.featuresService).uri);
+        assertEquals("incorrect app count", 1, mgr.getApplications().size());
+        assertEquals("incorrect app", app, mgr.getApplication(APP_ID));
+        assertEquals("incorrect app state", INSTALLED, mgr.getState(APP_ID));
+    }
+
+    @Test
+    public void uninstall() {
+        install();
+        mgr.uninstall(APP_ID);
+        assertEquals("incorrect app count", 0, mgr.getApplications().size());
+    }
+
+    @Test
+    public void activate() {
+        install();
+        mgr.activate(APP_ID);
+        assertEquals("incorrect app state", ACTIVE, mgr.getState(APP_ID));
+    }
+
+    @Test
+    public void deactivate() {
+        activate();
+        mgr.deactivate(APP_ID);
+        assertEquals("incorrect app state", INSTALLED, mgr.getState(APP_ID));
+    }
+
+
+    private class TestListener implements ApplicationListener {
+        private ApplicationEvent event;
+
+        @Override
+        public void event(ApplicationEvent event) {
+            this.event = event;
+        }
+    }
+
+    private class TestStore extends ApplicationStoreAdapter {
+
+        private Application app;
+        private ApplicationState state;
+
+        @Override
+        public Application create(InputStream appDescStream) {
+            app = new DefaultApplication(APP_ID, VER, DESC, ORIGIN, PERMS,
+                                         Optional.of(FURL), FEATURES);
+            state = INSTALLED;
+            delegate.notify(new ApplicationEvent(APP_INSTALLED, app));
+            return app;
+        }
+
+        @Override
+        public Set<Application> getApplications() {
+            return app != null ? ImmutableSet.of(app) : ImmutableSet.of();
+        }
+
+        @Override
+        public Application getApplication(ApplicationId appId) {
+            return app;
+        }
+
+        @Override
+        public void remove(ApplicationId appId) {
+            delegate.notify(new ApplicationEvent(APP_UNINSTALLED, app));
+            app = null;
+            state = null;
+        }
+
+        @Override
+        public ApplicationState getState(ApplicationId appId) {
+            return state;
+        }
+
+        @Override
+        public void activate(ApplicationId appId) {
+            state = ApplicationState.ACTIVE;
+            delegate.notify(new ApplicationEvent(APP_ACTIVATED, app));
+        }
+
+        @Override
+        public void deactivate(ApplicationId appId) {
+            state = INSTALLED;
+            delegate.notify(new ApplicationEvent(APP_DEACTIVATED, app));
+        }
+    }
+
+    private class TestFeaturesService extends FeaturesServiceAdapter {
+        private URI uri;
+        private Set<String> features = new HashSet<>();
+
+        @Override
+        public void addRepository(URI uri) throws Exception {
+            this.uri = uri;
+        }
+
+        @Override
+        public void removeRepository(URI uri) throws Exception {
+            this.uri = null;
+        }
+
+        @Override
+        public void installFeature(String name) throws Exception {
+            features.add(name);
+        }
+
+        @Override
+        public void uninstallFeature(String name) throws Exception {
+            features.remove(name);
+        }
+    }
+
+}
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