Add iot unit and integrations tests

Author: minbi

aws-android-sdk-iot/build.gradle

@@ -5,6 +5,10 @@ dependencies {
 
     api project(":aws-android-sdk-core")
     implementation "org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.0"
+
+    testImplementation "junit:junit:4.12"
+    testImplementation "org.robolectric:robolectric:2.4"
+    testImplementation "org.mockito:mockito-all:1.10.5"
 }
 
 sourceCompatibility = "1.7"

aws-android-sdk-iot/pom.xml

@@ -28,6 +28,24 @@
       <optional>false</optional>
       <version>1.1.0</version>
     </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.robolectric</groupId>
+      <artifactId>robolectric</artifactId>
+      <version>2.4</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-all</artifactId>
+      <version>1.10.5</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

aws-android-sdk-iot/src/test/java/com/amazonaws/mobileconnectors/iot/AWSIotClientIdHelperTest.java

@@ -0,0 +1,76 @@
+
+package com.amazonaws.mobileconnectors.iot;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import com.amazonaws.util.StringUtils;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.FileOutputStream;
+
+public class AWSIotClientIdHelperTest {
+
+    private static final String TEST_DIRECTORY = "./";
+    private static final String PERSISTENCE_FILENAME = "CLIENT_ID";
+
+    @Before
+    public void setUp() throws Exception {
+        // remove any existing file, clear the static class variable
+        File persistenceFile = new File(TEST_DIRECTORY, PERSISTENCE_FILENAME);
+        if (persistenceFile.exists()) {
+            persistenceFile.delete();
+        }
+        AWSIotClientIdHelper.reset();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        // remove any existing file
+        File persistenceFile = new File(TEST_DIRECTORY, PERSISTENCE_FILENAME);
+        if (persistenceFile.exists()) {
+            persistenceFile.delete();
+        }
+    }
+
+    @Test
+    public void testGenerateClientId() throws Exception {
+        String testId1 = AWSIotClientIdHelper.generateClientId();
+        String testId2 = AWSIotClientIdHelper.generateClientId();
+        String testId3 = AWSIotClientIdHelper.generateClientId();
+        // UUIDs are 36 character strings
+        assertEquals(36, testId1.length());
+        assertEquals(36, testId2.length());
+        assertEquals(36, testId3.length());
+        // generate gets a new ID each call
+        assertFalse(testId1.equals(testId2));
+        assertFalse(testId2.equals(testId3));
+        assertFalse(testId1.equals(testId3));
+    }
+
+    @Test
+    public void testGetPersistedClientId() throws Exception {
+        String testId = AWSIotClientIdHelper.getPersistedClientId(TEST_DIRECTORY);
+        // UUIDs are 36 character strings
+        assertEquals(36, testId.length());
+        // ensure same ID is returned 2nd time
+        assertEquals(testId, AWSIotClientIdHelper.getPersistedClientId(TEST_DIRECTORY));
+    }
+
+    @Test
+    public void testGetPersistedClientIdFilePresent() throws Exception {
+        File persistenceFile = new File(TEST_DIRECTORY, PERSISTENCE_FILENAME);
+        FileOutputStream out = new FileOutputStream(persistenceFile);
+        out.write("this-is-a-36-character-string-4-test".getBytes(StringUtils.UTF8));
+        out.close();
+        String testId = AWSIotClientIdHelper.getPersistedClientId(TEST_DIRECTORY);
+        // UUIDs are 36 character strings
+        assertEquals(36, testId.length());
+        // ensure same ID as create above is returned
+        assertEquals("this-is-a-36-character-string-4-test", testId);
+    }
+}

aws-android-sdk-iot/src/test/java/com/amazonaws/mobileconnectors/iot/AWSIotMqttLastWillAndTestamentTest.java

@@ -0,0 +1,43 @@
+package com.amazonaws.mobileconnectors.iot;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class AWSIotMqttLastWillAndTestamentTest {
+
+    @Test
+    public void testTopic() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("test/lwt", "bye", AWSIotMqttQos.QOS0);
+        assertEquals("test/lwt", lwt.getTopic());
+    }
+
+    @Test
+    public void testMessage() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("test/lwt", "bye", AWSIotMqttQos.QOS0);
+        assertEquals("bye", lwt.getMessage());
+    }
+
+    @Test
+    public void testQos() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("test/lwt", "bye", AWSIotMqttQos.QOS0);
+        assertEquals(AWSIotMqttQos.QOS0, lwt.getQos());
+    }
+
+    @Test(expected=IllegalArgumentException.class)
+    public void testCreateLwtWithNullTopic() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament(null, "bye", AWSIotMqttQos.QOS0);
+    }
+    @Test(expected=IllegalArgumentException.class)
+    public void testCreateLwtWithEmptyTopic() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("", "bye", AWSIotMqttQos.QOS0);
+    }
+    @Test(expected=IllegalArgumentException.class)
+    public void testCreateLwtWithNullMessage() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("test/lwt", null, AWSIotMqttQos.QOS0);
+    }
+    @Test(expected=IllegalArgumentException.class)
+    public void testCreateLwtWithNullQos() throws Exception {
+        AWSIotMqttLastWillAndTestament lwt = new AWSIotMqttLastWillAndTestament("test/lwt", "bye", null);
+    }
+}