ONOS-542 Defining application subsystem interfaces & public constructs.

Change-Id: Iba0d2cb69dace5beee8a68def9918059ce755b5c
diff --git a/core/api/src/test/java/org/onosproject/app/DefaultApplicationDescriptionTest.java b/core/api/src/test/java/org/onosproject/app/DefaultApplicationDescriptionTest.java
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+++ b/core/api/src/test/java/org/onosproject/app/DefaultApplicationDescriptionTest.java
@@ -0,0 +1,57 @@
+/*
+ * 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;
+
+import com.google.common.collect.ImmutableSet;
+import org.junit.Test;
+import org.onosproject.core.Permission;
+import org.onosproject.core.Version;
+
+import java.net.URI;
+import java.util.Set;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Basic tests of the default app description.
+ */
+public class DefaultApplicationDescriptionTest {
+
+    public static final String APP_NAME = "org.foo.app";
+    public static final Version VER = Version.version(1, 2, "a", null);
+    public static final String DESC = "Awesome application from Circus";
+    public static final String ORIGIN = "Circus";
+    public static final Set<Permission> PERMS = ImmutableSet.of();
+    public static final URI FURL = URI.create("mvn:org.foo-features/1.2a/xml/features");
+    public static final Set<String> FEATURES = ImmutableSet.of("foo");
+
+    @Test
+    public void basics() {
+        ApplicationDescription app =
+                new DefaultApplicationDescription(APP_NAME, VER, DESC, ORIGIN,
+                                                  PERMS, FURL, FEATURES);
+        assertEquals("incorrect id", APP_NAME, app.name());
+        assertEquals("incorrect version", VER, app.version());
+        assertEquals("incorrect description", DESC, app.description());
+        assertEquals("incorrect origin", ORIGIN, app.origin());
+        assertEquals("incorrect permissions", PERMS, app.permissions());
+        assertEquals("incorrect features repo", FURL, app.featuresRepo().get());
+        assertEquals("incorrect features", FEATURES, app.features());
+        assertTrue("incorrect toString", app.toString().contains(APP_NAME));
+    }
+
+}
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