Improve Test coverage of DFC

[nonrtric/plt/ranpm.git] / datafilecollector / src / test / java / org / oran / datafile / tasks / KafkaTopicListenerTest.java

diff --git a/datafilecollector/src/test/java/org/oran/datafile/tasks/KafkaTopicListenerTest.java b/datafilecollector/src/test/java/org/oran/datafile/tasks/KafkaTopicListenerTest.java
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+++ b/datafilecollector/src/test/java/org/oran/datafile/tasks/KafkaTopicListenerTest.java
@@ -0,0 +1,70 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2023 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.oran.datafile.tasks;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Collections;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.clients.consumer.OffsetResetStrategy;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.oran.datafile.configuration.AppConfig;
+import reactor.core.publisher.Flux;
+import reactor.kafka.receiver.KafkaReceiver;
+import reactor.kafka.receiver.ReceiverOptions;
+
+class KafkaTopicListenerTest {
+
+    @Mock
+    private AppConfig appConfig;
+
+    @Mock
+    private KafkaTopicListener kafkaTopicListener;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(appConfig.getInputTopic()).thenReturn("testTopic");
+        when(appConfig.getKafkaClientId()).thenReturn("testClientId");
+        when(appConfig.getKafkaBootStrapServers()).thenReturn("localhost:9092");
+        kafkaTopicListener = new KafkaTopicListener(appConfig);
+    }
+
+    @Test
+    void testStartReceiveFromTopic() {
+        KafkaReceiver mockKafkaReceiver = mock(KafkaReceiver.class);
+
+        when(mockKafkaReceiver.receive()).thenReturn(Flux.just(new KafkaTopicListener.DataFromTopic("key", "value")));
+
+        ReceiverOptions<String, String> receiverOptions = mock(ReceiverOptions.class);
+        when(receiverOptions.subscription(Collections.singleton("testTopic"))).thenReturn(receiverOptions);
+        when(receiverOptions.consumerProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, OffsetResetStrategy.EARLIEST.name()))
+            .thenReturn(receiverOptions);
+
+        assertEquals("testTopic", appConfig.getInputTopic());
+
+    }
+}
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