Add additional test case

Author: Stephen Powis

CHANGELOG.md

@@ -4,6 +4,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## 1.2.0 (UNRELEASED)
 
+### New Features
+- Added ability to authenticate with Kafka-Connect REST endpoints utilizing Basic-Authentication.
 
 ## 1.1.0 (01/30/2019)
 

pom.xml

@@ -129,6 +129,15 @@
             <scope>test</scope>
         </dependency>
 
+        <!-- Mocking in Tests -->
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>2.23.4</version>
+            <scope>test</scope>
+        </dependency>
+
+
         <!-- Data providers on tests -->
         <dependency>
             <groupId>com.tngtech.java</groupId>

src/test/java/org/sourcelab/kafka/connect/apiclient/KafkaConnectClientUnitTest.java

@@ -0,0 +1,58 @@
+/**
+ * Copyright 2018, 2019 SourceLab.org https://github.com/SourceLabOrg/kafka-connect-client
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+ * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package org.sourcelab.kafka.connect.apiclient;
+
+import org.apache.http.HttpStatus;
+import org.junit.Test;
+import org.sourcelab.kafka.connect.apiclient.rest.RestClient;
+import org.sourcelab.kafka.connect.apiclient.rest.RestResponse;
+import org.sourcelab.kafka.connect.apiclient.rest.exceptions.UnauthorizedRequestException;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+/**
+ * Unit tests over KafkaConnectClient.
+ */
+public class KafkaConnectClientUnitTest {
+
+    /**
+     * This test verifies that if the underlying RestClient returns a response with Http Status Code 401,
+     * then KafkaConnectClient will throw an UnauthorizedRequestException.
+     */
+    @Test(expected = UnauthorizedRequestException.class)
+    public void unAuthorizedException() {
+        // Create configuration
+        final Configuration configuration = new Configuration("http://localhost:9092");
+
+        // Create mock RestResponse
+        final RestResponse restResponse = new RestResponse("Invalid credentials.", HttpStatus.SC_UNAUTHORIZED);
+
+        // Create mock RestClient
+        final RestClient mockRestClient = mock(RestClient.class);
+        when(mockRestClient.submitRequest(any()))
+            .thenReturn(restResponse);
+
+        // Create client
+        final KafkaConnectClient client = new KafkaConnectClient(configuration, mockRestClient);
+
+        // Call any method that makes a request via RestClient.
+        client.getConnectors();
+    }
+}