[ONOS-4621] Unit Tests for Snmp provider and protocol

Change-Id: If70c701478762201b3739d9bd017c9f7eec75db1
diff --git a/providers/snmp/device/pom.xml b/providers/snmp/device/pom.xml
index bde52f6..c66a9ad 100644
--- a/providers/snmp/device/pom.xml
+++ b/providers/snmp/device/pom.xml
@@ -57,7 +57,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-
         <dependency>
             <groupId>com.btisystems</groupId>
             <artifactId>snmp-core</artifactId>
@@ -80,15 +79,21 @@
             <artifactId>onos-core-net</artifactId>
             <version>1.6.0-SNAPSHOT</version>
         </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-api</artifactId>
+            <version>1.6.0-SNAPSHOT</version>
+            <classifier>tests</classifier>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
-        <build>
-            <plugins>
-                <plugin>
-                    <groupId>org.apache.felix</groupId>
-                    <artifactId>maven-scr-plugin</artifactId>
-                </plugin>
-            </plugins>
-        </build>
-
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-scr-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
 </project>
    
diff --git a/providers/snmp/device/src/main/java/org/onosproject/provider/snmp/device/impl/SnmpDeviceProvider.java b/providers/snmp/device/src/main/java/org/onosproject/provider/snmp/device/impl/SnmpDeviceProvider.java
index 4cd809b..ae8da4a 100644
--- a/providers/snmp/device/src/main/java/org/onosproject/provider/snmp/device/impl/SnmpDeviceProvider.java
+++ b/providers/snmp/device/src/main/java/org/onosproject/provider/snmp/device/impl/SnmpDeviceProvider.java
@@ -74,8 +74,6 @@
     private static final String APP_NAME = "org.onosproject.snmp";
     private static final String SCHEME = "snmp";
 
-    private DeviceProviderService providerService;
-
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected SnmpController controller;
 
@@ -94,14 +92,17 @@
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected NetworkConfigRegistry netCfgService;
 
+    protected DeviceProviderService providerService;
+
+    protected ApplicationId appId;
+
     private final ExecutorService deviceBuilderExecutor = Executors
             .newFixedThreadPool(5, groupedThreads("onos/snmp", "device-creator", log));
 
-    private final NetworkConfigListener cfgLister = new InternalNetworkConfigListener();
+    protected final NetworkConfigListener cfgLister = new InternalNetworkConfigListener();
 
-    private ApplicationId appId;
 
-    private final ConfigFactory factory =
+    protected final ConfigFactory factory =
             new ConfigFactory<ApplicationId, SnmpProviderConfig>(APP_SUBJECT_FACTORY,
                                                                  SnmpProviderConfig.class,
                                                                  "devices",
diff --git a/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpControllerAdapter.java b/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpControllerAdapter.java
new file mode 100644
index 0000000..aa40183
--- /dev/null
+++ b/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpControllerAdapter.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2016 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.provider.snmp.device.impl;
+
+import com.btisystems.pronx.ems.core.snmp.ISnmpSession;
+import org.onosproject.incubator.net.faultmanagement.alarm.DefaultAlarm;
+import org.onosproject.net.DeviceId;
+import org.onosproject.snmp.*;
+import org.onosproject.snmp.SnmpDevice;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Test Adapter for SnmpController API.
+ */
+public class SnmpControllerAdapter implements SnmpController {
+
+    protected HashMap<DeviceId, SnmpDevice> devices = new HashMap<>();
+    @Override
+    public Collection<SnmpDevice> getDevices() {
+        return devices.values();
+    }
+
+    @Override
+    public SnmpDevice getDevice(DeviceId deviceId) {
+        return devices.get(deviceId);
+    }
+
+    @Override
+    public void removeDevice(DeviceId deviceId) {
+        devices.remove(deviceId);
+    }
+
+    @Override
+    public void addDevice(DeviceId deviceId, SnmpDevice snmpDevice) {
+        devices.put(deviceId,snmpDevice);
+    }
+
+    @Override
+    public ISnmpSession getSession(DeviceId deviceId) throws IOException {
+        return null;
+    }
+
+    @Override
+    public DefaultAlarm buildWalkFailedAlarm(DeviceId deviceId) {
+        return null;
+    }
+}
diff --git a/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpDeviceProviderTest.java b/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpDeviceProviderTest.java
new file mode 100644
index 0000000..5577fdb
--- /dev/null
+++ b/providers/snmp/device/src/main/test/org/onosproject/provider/snmp/device/impl/SnmpDeviceProviderTest.java
@@ -0,0 +1,253 @@
+/*
+ * Copyright 2016 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.provider.snmp.device.impl;
+
+import com.google.common.collect.ImmutableSet;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.TestApplicationId;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.core.CoreServiceAdapter;
+import org.onosproject.incubator.net.config.basics.ConfigException;
+import org.onosproject.net.AbstractProjectableModel;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.config.Config;
+import org.onosproject.net.config.ConfigFactory;
+import org.onosproject.net.config.NetworkConfigEvent;
+import org.onosproject.net.config.NetworkConfigListener;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.NetworkConfigRegistryAdapter;
+import org.onosproject.net.config.basics.BasicDeviceConfig;
+import org.onosproject.net.device.DeviceDescription;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceProvider;
+import org.onosproject.net.device.DeviceProviderRegistry;
+import org.onosproject.net.device.DeviceProviderRegistryAdapter;
+import org.onosproject.net.device.DeviceProviderService;
+import org.onosproject.net.device.DeviceProviderServiceAdapter;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.device.DeviceServiceAdapter;
+import org.onosproject.net.device.DeviceStore;
+import org.onosproject.net.device.DeviceStoreAdapter;
+import org.onosproject.net.driver.DriverService;
+import org.onosproject.net.driver.DriverServiceAdapter;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.snmp.SnmpController;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.junit.Assert.*;
+import static org.onlab.junit.TestTools.assertAfter;
+
+/**
+ * Testing class for SnmpDeviceProvider.
+ */
+public class SnmpDeviceProviderTest {
+
+    private final SnmpDeviceProvider provider = new SnmpDeviceProvider();
+    private final SnmpController controller = new SnmpControllerAdapter();
+    private final DeviceProviderRegistry providerRegistry = new MockDeviceProviderRegistry();
+    private final DeviceService deviceService = new MockDeviceService();
+    private final NetworkConfigRegistry netCfgService = new MockNetworkConfigRegistry();
+    private final DeviceStore deviceStore = new MockDeviceStore();
+    protected CoreService coreService = new MockCoreService();
+    private final DeviceProviderService deviceProviderService = new MockDeviceProviderService();
+    private final TestApplicationId applicationId = new TestApplicationId("TestAppId");
+    private final NetworkConfigEvent deviceAddedEvent =
+            new NetworkConfigEvent(NetworkConfigEvent.Type.CONFIG_ADDED,
+                                   null, SnmpProviderConfig.class);
+    private final SnmpProviderConfig snmpProviderConfig = new MockSnmpProviderConfig();
+    private final NetworkConfigEvent deviceAddedIrrelevantEvent =
+            new NetworkConfigEvent(NetworkConfigEvent.Type.CONFIG_ADDED,
+                                   null, BasicDeviceConfig.class);
+    private final DeviceId deviceId = DeviceId.deviceId("snmp:1.1.1.1:1");
+    private final DeviceId wrongDeviceId = DeviceId.deviceId("snmp:2.2.2.2:2");
+
+
+    @Before
+    public void setUp() throws Exception {
+        provider.controller = controller;
+        provider.providerRegistry = providerRegistry;
+        provider.deviceService = deviceService;
+        provider.netCfgService = netCfgService;
+        provider.deviceStore = deviceStore;
+        provider.coreService = coreService;
+        provider.activate(null);
+    }
+
+    @Test
+    public void testActivate() {
+        assertEquals("Incorrect provider service", deviceProviderService, provider.providerService);
+        assertEquals("Incorrect application id", applicationId, provider.appId);
+        assertEquals("Incorrect config factory", cfgFactory, provider.factory);
+        assertTrue("Incorrect network config listener", netCfgListeners.contains(provider.cfgLister));
+
+
+    }
+
+    @Test
+    public void testDeactivate() {
+        this.addDevice();
+        provider.deactivate(null);
+        assertAfter(500, () ->
+                assertNull("Device should be removed", controller.getDevice(deviceId)));
+        assertNull("Network config factory not removed", cfgFactory);
+        assertFalse("Network config listener not removed", netCfgListeners.contains(provider.cfgLister));
+        assertFalse("Provider not unregistered", providerRegistry.getProviders().contains(provider.id()));
+        assertNull("Provider registry not removed", provider.providerService);
+    }
+
+    @Test
+    public void eventNotRelevant() {
+        assertFalse("Event should not be relevant", provider.cfgLister.isRelevant(deviceAddedIrrelevantEvent));
+        assertFalse("Device should not be reachable", provider.isReachable(wrongDeviceId));
+    }
+
+    @Test
+    public void addDevice() {
+        assertTrue("Event should be relevant", provider.cfgLister.isRelevant(deviceAddedEvent));
+        provider.cfgLister.event(deviceAddedEvent);
+        AbstractProjectableModel.setDriverService(null, new MockDriverService());
+        //FIXME this needs sleep
+        assertAfter(500, () ->
+                assertNotNull("Device should be added to controller", controller.getDevice(deviceId)));
+        assertTrue("Device should be reachable", provider.isReachable(deviceId));
+    }
+
+    private class MockDeviceProviderRegistry extends DeviceProviderRegistryAdapter {
+
+        Set<ProviderId> providers = new HashSet<>();
+
+        @Override
+        public DeviceProviderService register(DeviceProvider provider) {
+            providers.add(provider.id());
+            return deviceProviderService;
+        }
+
+        @Override
+        public void unregister(DeviceProvider provider) {
+            providers.remove(provider.id());
+        }
+
+        @Override
+        public Set<ProviderId> getProviders() {
+            return providers;
+        }
+
+    }
+
+    private class MockDeviceService extends DeviceServiceAdapter {
+        @Override
+        public Device getDevice(DeviceId deviceId) {
+            return deviceStore.getDevice(deviceId);
+        }
+    }
+
+    private ConfigFactory cfgFactory;
+    private Set<NetworkConfigListener> netCfgListeners = new HashSet<>();
+
+    private class MockNetworkConfigRegistry extends NetworkConfigRegistryAdapter {
+
+        @Override
+        public void registerConfigFactory(ConfigFactory configFactory) {
+            cfgFactory = configFactory;
+        }
+
+        @Override
+        public void unregisterConfigFactory(ConfigFactory configFactory) {
+            cfgFactory = null;
+        }
+
+        @Override
+        public void addListener(NetworkConfigListener listener) {
+            netCfgListeners.add(listener);
+        }
+
+        @Override
+        public void removeListener(NetworkConfigListener listener) {
+            netCfgListeners.remove(listener);
+        }
+
+
+        @Override
+        public <S, C extends Config<S>> C getConfig(S subject, Class<C> configClass) {
+            if (configClass.equals(SnmpProviderConfig.class)) {
+                return (C) snmpProviderConfig;
+            } else {
+                return (C) new BasicDeviceConfig();
+            }
+        }
+    }
+
+    private class MockDeviceStore extends DeviceStoreAdapter {
+        protected HashMap<DeviceId, Device> devices = new HashMap<>();
+
+        @Override
+        public DeviceEvent createOrUpdateDevice(ProviderId providerId, DeviceId deviceId,
+                                                DeviceDescription desc) {
+
+            devices.put(deviceId, new DefaultDevice(providerId, deviceId, desc.type(),
+                                                    desc.manufacturer(), desc.hwVersion(),
+                                                    desc.swVersion(), desc.serialNumber(),
+                                                    desc.chassisId(), DefaultAnnotations.builder().build()));
+            return null;
+        }
+
+        @Override
+        public Device getDevice(DeviceId deviceId) {
+            return devices.get(deviceId);
+        }
+
+    }
+
+    private class MockCoreService extends CoreServiceAdapter {
+        @Override
+        public ApplicationId registerApplication(String name) {
+            return applicationId;
+        }
+    }
+
+    private class MockDeviceProviderService extends DeviceProviderServiceAdapter {
+        DeviceStore store = deviceStore;
+
+        @Override
+        public void deviceConnected(DeviceId deviceId, DeviceDescription desc) {
+            store.createOrUpdateDevice(ProviderId.NONE, deviceId, desc);
+        }
+    }
+
+    private class MockSnmpProviderConfig extends SnmpProviderConfig {
+        protected SnmpDeviceInfo deviceInfo = new SnmpDeviceInfo(IpAddress.valueOf("1.1.1.1"), 1, "test", "test");
+
+        @Override
+        public Set<SnmpProviderConfig.SnmpDeviceInfo> getDevicesInfo() throws ConfigException {
+            return ImmutableSet.of(deviceInfo);
+        }
+
+    }
+
+    private class MockDriverService extends DriverServiceAdapter {
+
+    }
+}
\ No newline at end of file