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   1 /**
   2  * Copyright (c) 2010-2022 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.mqtt.homie;
  14
  15 import static org.hamcrest.CoreMatchers.is;
  16 import static org.hamcrest.MatcherAssert.assertThat;
  17 import static org.junit.jupiter.api.Assertions.*;
  18 import static org.mockito.ArgumentMatchers.*;
  19 import static org.mockito.Mockito.*;
  20
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.List;
  24 import java.util.concurrent.CompletableFuture;
  25 import java.util.concurrent.CountDownLatch;
  26 import java.util.concurrent.ScheduledExecutorService;
  27 import java.util.concurrent.ScheduledThreadPoolExecutor;
  28 import java.util.concurrent.TimeUnit;
  29
  30 import org.eclipse.jdt.annotation.NonNullByDefault;
  31 import org.junit.jupiter.api.AfterEach;
  32 import org.junit.jupiter.api.BeforeEach;
  33 import org.junit.jupiter.api.Disabled;
  34 import org.junit.jupiter.api.Test;
  35 import org.junit.jupiter.api.extension.ExtendWith;
  36 import org.mockito.Mock;
  37 import org.mockito.invocation.InvocationOnMock;
  38 import org.mockito.junit.jupiter.MockitoExtension;
  39 import org.mockito.junit.jupiter.MockitoSettings;
  40 import org.mockito.quality.Strictness;
  41 import org.openhab.binding.mqtt.generic.ChannelState;
  42 import org.openhab.binding.mqtt.generic.tools.ChildMap;
  43 import org.openhab.binding.mqtt.generic.tools.WaitForTopicValue;
  44 import org.openhab.binding.mqtt.homie.internal.handler.HomieThingHandler;
  45 import org.openhab.binding.mqtt.homie.internal.homie300.Device;
  46 import org.openhab.binding.mqtt.homie.internal.homie300.DeviceAttributes;
  47 import org.openhab.binding.mqtt.homie.internal.homie300.DeviceAttributes.ReadyState;
  48 import org.openhab.binding.mqtt.homie.internal.homie300.DeviceCallback;
  49 import org.openhab.binding.mqtt.homie.internal.homie300.Node;
  50 import org.openhab.binding.mqtt.homie.internal.homie300.NodeAttributes;
  51 import org.openhab.binding.mqtt.homie.internal.homie300.Property;
  52 import org.openhab.binding.mqtt.homie.internal.homie300.PropertyAttributes;
  53 import org.openhab.binding.mqtt.homie.internal.homie300.PropertyAttributes.DataTypeEnum;
  54 import org.openhab.binding.mqtt.homie.internal.homie300.PropertyHelper;
  55 import org.openhab.core.io.transport.mqtt.MqttBrokerConnection;
  56 import org.openhab.core.io.transport.mqtt.MqttConnectionObserver;
  57 import org.openhab.core.io.transport.mqtt.MqttConnectionState;
  58 import org.openhab.core.library.types.OnOffType;
  59 import org.openhab.core.library.types.QuantityType;
  60 import org.openhab.core.library.unit.SIUnits;
  61 import org.openhab.core.types.UnDefType;
  62
  63 /**
  64  * A full implementation test, that starts the embedded MQTT broker and publishes a homie device tree.
  65  *
  66  * @author David Graeff - Initial contribution
  67  */
  68 @ExtendWith(MockitoExtension.class)
  69 @MockitoSettings(strictness = Strictness.LENIENT)
  70 @NonNullByDefault
  71 public class HomieImplementationTest extends MqttOSGiTest {
  72     private static final String BASE_TOPIC = "homie";
  73     private static final String DEVICE_ID = ThingChannelConstants.TEST_HOME_THING.getId();
  74     private static final String DEVICE_TOPIC = BASE_TOPIC + "/" + DEVICE_ID;
  75
  76     private @NonNullByDefault({}) MqttBrokerConnection homieConnection;
  77     private int registeredTopics = 100;
  78
  79     // The handler is not tested here, so just mock the callback
  80     private @Mock @NonNullByDefault({}) DeviceCallback callback;
  81
  82     // A handler mock is required to verify that channel value changes have been received
  83     private @Mock @NonNullByDefault({}) HomieThingHandler handler;
  84
  85     private @NonNullByDefault({}) ScheduledExecutorService scheduler;
  86
  87     /**
  88      * Create an observer that fails the test as soon as the broker client connection changes its connection state
  89      * to something else then CONNECTED.
  90      */
  91     private MqttConnectionObserver failIfChange = (state, error) -> assertThat(state,
  92             is(MqttConnectionState.CONNECTED));
  93
  94     private String propertyTestTopic = "";
  95
  96     @Override
  97     @BeforeEach
  98     public void beforeEach() throws Exception {
  99         super.beforeEach();
 100
 101         homieConnection = createBrokerConnection("homie");
 102
 103         // If the connection state changes in between -> fail
 104         homieConnection.addConnectionObserver(failIfChange);
 105
 106         List<CompletableFuture<Boolean>> futures = new ArrayList<>();
 107         futures.add(publish(DEVICE_TOPIC + "/$homie", "3.0"));
 108         futures.add(publish(DEVICE_TOPIC + "/$name", "Name"));
 109         futures.add(publish(DEVICE_TOPIC + "/$state", "ready"));
 110         futures.add(publish(DEVICE_TOPIC + "/$nodes", "testnode"));
 111
 112         // Add homie node topics
 113         final String testNode = DEVICE_TOPIC + "/testnode";
 114         futures.add(publish(testNode + "/$name", "Testnode"));
 115         futures.add(publish(testNode + "/$type", "Type"));
 116         futures.add(publish(testNode + "/$properties", "temperature,doorbell,testRetain"));
 117
 118         // Add homie property topics
 119         final String property = testNode + "/temperature";
 120         futures.add(publish(property, "10"));
 121         futures.add(publish(property + "/$name", "Testprop"));
 122         futures.add(publish(property + "/$settable", "true"));
 123         futures.add(publish(property + "/$unit", "°C"));
 124         futures.add(publish(property + "/$datatype", "float"));
 125         futures.add(publish(property + "/$format", "-100:100"));
 126
 127         final String propertyBellTopic = testNode + "/doorbell";
 128         futures.add(publish(propertyBellTopic + "/$name", "Doorbell"));
 129         futures.add(publish(propertyBellTopic + "/$settable", "false"));
 130         futures.add(publish(propertyBellTopic + "/$retained", "false"));
 131         futures.add(publish(propertyBellTopic + "/$datatype", "boolean"));
 132
 133         this.propertyTestTopic = testNode + "/testRetain";
 134         futures.add(publish(propertyTestTopic + "/$name", "Test"));
 135         futures.add(publish(propertyTestTopic + "/$settable", "true"));
 136         futures.add(publish(propertyTestTopic + "/$retained", "false"));
 137         futures.add(publish(propertyTestTopic + "/$datatype", "boolean"));
 138
 139         registeredTopics = futures.size();
 140         CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).get(5, TimeUnit.SECONDS);
 141
 142         scheduler = new ScheduledThreadPoolExecutor(6);
 143     }
 144
 145     @Override
 146     @AfterEach
 147     public void afterEach() throws Exception {
 148         if (homieConnection != null) {
 149             homieConnection.removeConnectionObserver(failIfChange);
 150             homieConnection.stop().get(5, TimeUnit.SECONDS);
 151         }
 152         if (scheduler != null) {
 153             scheduler.shutdownNow();
 154         }
 155         super.afterEach();
 156     }
 157
 158     @Test
 159     public void retrieveAllTopics() throws Exception {
 160         // four topics are not under /testnode !
 161         CountDownLatch c = new CountDownLatch(registeredTopics - 4);
 162         homieConnection.subscribe(DEVICE_TOPIC + "/testnode/#", (topic, payload) -> c.countDown()).get(5,
 163                 TimeUnit.SECONDS);
 164         assertTrue(c.await(5, TimeUnit.SECONDS),
 165                 "Connection " + homieConnection.getClientId() + " not retrieving all topics ");
 166     }
 167
 168     @Test
 169     public void retrieveOneAttribute() throws Exception {
 170         WaitForTopicValue watcher = new WaitForTopicValue(homieConnection, DEVICE_TOPIC + "/$homie");
 171         assertThat(watcher.waitForTopicValue(1000), is("3.0"));
 172     }
 173
 174     @SuppressWarnings("null")
 175     @Test
 176     public void retrieveAttributes() throws Exception {
 177         assertThat(homieConnection.hasSubscribers(), is(false));
 178
 179         Node node = new Node(DEVICE_TOPIC, "testnode", ThingChannelConstants.TEST_HOME_THING, callback,
 180                 new NodeAttributes());
 181         Property property = spy(
 182                 new Property(DEVICE_TOPIC + "/testnode", node, "temperature", callback, new PropertyAttributes()));
 183
 184         // Create a scheduler
 185         ScheduledExecutorService scheduler = new ScheduledThreadPoolExecutor(4);
 186
 187         property.subscribe(homieConnection, scheduler, 500).get();
 188
 189         assertThat(property.attributes.settable, is(true));
 190         assertThat(property.attributes.retained, is(true));
 191         assertThat(property.attributes.name, is("Testprop"));
 192         assertThat(property.attributes.unit, is("°C"));
 193         assertThat(property.attributes.datatype, is(DataTypeEnum.float_));
 194         waitForAssert(() -> assertThat(property.attributes.format, is("-100:100")));
 195         verify(property, timeout(500).atLeastOnce()).attributesReceived();
 196
 197         // Receive property value
 198         ChannelState channelState = spy(property.getChannelState());
 199         PropertyHelper.setChannelState(property, channelState);
 200
 201         property.startChannel(homieConnection, scheduler, 500).get();
 202         verify(channelState).start(any(), any(), anyInt());
 203         verify(channelState, timeout(500)).processMessage(any(), any());
 204         verify(callback).updateChannelState(any(), any());
 205
 206         assertThat(property.getChannelState().getCache().getChannelState(),
 207                 is(new QuantityType<>(10, SIUnits.CELSIUS)));
 208
 209         property.stop().get();
 210         assertThat(homieConnection.hasSubscribers(), is(false));
 211     }
 212
 213     // Inject a spy'ed property
 214     public Property createSpyProperty(InvocationOnMock invocation) {
 215         final Node node = (Node) invocation.getMock();
 216         final String id = (String) invocation.getArguments()[0];
 217         return spy(node.createProperty(id, spy(new PropertyAttributes())));
 218     }
 219
 220     // Inject a spy'ed node
 221     public Node createSpyNode(InvocationOnMock invocation) {
 222         final Device device = (Device) invocation.getMock();
 223         final String id = (String) invocation.getArguments()[0];
 224         // Create the node
 225         Node node = spy(device.createNode(id, spy(new NodeAttributes())));
 226         // Intercept creating a property in the next call and inject a spy'ed property.
 227         doAnswer(this::createSpyProperty).when(node).createProperty(any());
 228         return node;
 229     }
 230
 231     @SuppressWarnings("null")
 232     @Disabled("Temporarily disabled: unstable")
 233     @Test
 234     public void parseHomieTree() throws Exception {
 235         // Create a Homie Device object. Because spied Nodes are required for call verification,
 236         // the full Device constructor need to be used and a ChildMap object need to be created manually.
 237         ChildMap<Node> nodeMap = new ChildMap<>();
 238         Device device = spy(
 239                 new Device(ThingChannelConstants.TEST_HOME_THING, callback, new DeviceAttributes(), nodeMap));
 240
 241         // Intercept creating a node in initialize()->start() and inject a spy'ed node.
 242         doAnswer(this::createSpyNode).when(device).createNode(any());
 243
 244         // initialize the device, subscribe and wait.
 245         device.initialize(BASE_TOPIC, DEVICE_ID, Collections.emptyList());
 246         device.subscribe(homieConnection, scheduler, 1500).get();
 247
 248         assertThat(device.isInitialized(), is(true));
 249
 250         // Check device attributes
 251         assertThat(device.attributes.homie, is("3.0"));
 252         assertThat(device.attributes.name, is("Name"));
 253         assertThat(device.attributes.state, is(ReadyState.ready));
 254         assertThat(device.attributes.nodes.length, is(1));
 255         verify(device, times(4)).attributeChanged(any(), any(), any(), any(), anyBoolean());
 256         verify(callback).readyStateChanged(eq(ReadyState.ready));
 257         verify(device).attributesReceived(any(), any(), anyInt());
 258
 259         // Expect 1 node
 260         assertThat(device.nodes.size(), is(1));
 261
 262         // Check node and node attributes
 263         Node node = device.nodes.get("testnode");
 264         verify(node).subscribe(any(), any(), anyInt());
 265         verify(node).attributesReceived(any(), any(), anyInt());
 266         verify(node.attributes).subscribeAndReceive(any(), any(), anyString(), any(), anyInt());
 267         assertThat(node.attributes.type, is("Type"));
 268         assertThat(node.attributes.name, is("Testnode"));
 269
 270         // Expect 2 property
 271         assertThat(node.properties.size(), is(3));
 272
 273         // Check property and property attributes
 274         Property property = node.properties.get("temperature");
 275         assertThat(property.attributes.settable, is(true));
 276         assertThat(property.attributes.retained, is(true));
 277         assertThat(property.attributes.name, is("Testprop"));
 278         assertThat(property.attributes.unit, is("°C"));
 279         assertThat(property.attributes.datatype, is(DataTypeEnum.float_));
 280         assertThat(property.attributes.format, is("-100:100"));
 281         verify(property).attributesReceived();
 282         assertNotNull(property.getChannelState());
 283         assertThat(property.getType().getState().getMinimum().intValue(), is(-100));
 284         assertThat(property.getType().getState().getMaximum().intValue(), is(100));
 285
 286         // Check property and property attributes
 287         Property propertyBell = node.properties.get("doorbell");
 288         verify(propertyBell).attributesReceived();
 289         assertThat(propertyBell.attributes.settable, is(false));
 290         assertThat(propertyBell.attributes.retained, is(false));
 291         assertThat(propertyBell.attributes.name, is("Doorbell"));
 292         assertThat(propertyBell.attributes.datatype, is(DataTypeEnum.boolean_));
 293
 294         // The device->node->property tree is ready. Now subscribe to property values.
 295         device.startChannels(homieConnection, scheduler, 50, handler).get();
 296         assertThat(propertyBell.getChannelState().isStateful(), is(false));
 297         assertThat(propertyBell.getChannelState().getCache().getChannelState(), is(UnDefType.UNDEF));
 298         assertThat(property.getChannelState().getCache().getChannelState(),
 299                 is(new QuantityType<>(10, SIUnits.CELSIUS)));
 300
 301         property = node.properties.get("testRetain");
 302         WaitForTopicValue watcher = new WaitForTopicValue(brokerConnection, propertyTestTopic + "/set");
 303         // Watch the topic. Publish a retain=false value to MQTT
 304         property.getChannelState().publishValue(OnOffType.OFF).get();
 305         assertThat(watcher.waitForTopicValue(10000), is("false"));
 306
 307         // Publish a retain=false value to MQTT.
 308         property.getChannelState().publishValue(OnOffType.ON).get();
 309         // No value is expected to be retained on this MQTT topic
 310         waitForAssert(() -> {
 311             WaitForTopicValue w = new WaitForTopicValue(brokerConnection, propertyTestTopic + "/set");
 312             assertNull(w.waitForTopicValue(50));
 313         }, 500, 100);
 314     }
 315 }