1 files changed, 51 insertions, 0 deletions
diff --git a/common/src/test/java/org/onap/so/client/kafka/KafkaConsumerImplTest.java b/common/src/test/java/org/onap/so/client/kafka/KafkaConsumerImplTest.java
new file mode 100644
index 0000000000..d71e562b64
--- /dev/null
+++ b/common/src/test/java/org/onap/so/client/kafka/KafkaConsumerImplTest.java
@@ -0,0 +1,51 @@
+package org.onap.so.client.kafka;
+
+import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.apache.kafka.clients.consumer.MockConsumer;
+import org.apache.kafka.clients.consumer.OffsetResetStrategy;
+import org.apache.kafka.common.TopicPartition;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import uk.org.webcompere.systemstubs.environment.EnvironmentVariables;
+import uk.org.webcompere.systemstubs.jupiter.SystemStub;
+import uk.org.webcompere.systemstubs.jupiter.SystemStubsExtension;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ExtendWith(SystemStubsExtension.class)
+public class KafkaConsumerImplTest {
+    private KafkaConsumerImpl consumer;
+    private static MockConsumer<String, String> mockConsumer;
+    @SystemStub
+    EnvironmentVariables environmentVariables = new EnvironmentVariables();
+
+    @Before
+    public void setup() {
+        environmentVariables.set("JAAS_CONFIG", "jaas.config");
+        mockConsumer = new MockConsumer<>(OffsetResetStrategy.EARLIEST);
+        configureMockConsumer();
+    }
+
+    @Test
+    public void consumerShouldConsumeMessages() throws Exception {
+        consumer = new KafkaConsumerImpl("localhost:9092");
+        consumer.setConsumer(mockConsumer);
+        List<String> response = consumer.get("TOPIC", "CG1", "C1");
+        assertThat(response).contains("I", "like", "pizza");
+    }
+
+    private void configureMockConsumer() {
+        mockConsumer.assign(Arrays.asList(new TopicPartition("TOPIC", 0)));
+
+        HashMap<TopicPartition, Long> beginningOffsets = new HashMap<>();
+        beginningOffsets.put(new TopicPartition("TOPIC", 0), 0L);
+        mockConsumer.updateBeginningOffsets(beginningOffsets);
+        mockConsumer.addRecord(new ConsumerRecord<String, String>("TOPIC", 0, 0L, "key", "I"));
+        mockConsumer.addRecord(new ConsumerRecord<String, String>("TOPIC", 0, 1L, "key", "like"));
+        mockConsumer.addRecord(new ConsumerRecord<String, String>("TOPIC", 0, 2L, "key", "pizza"));
+
+    }
+}