Implement message counting in consumer

Issue-ID: DCAEGEN2-1635
Change-Id: I2666de7bad27052d9cefa0f687ad0772d4c9a95d
Signed-off-by: kjaniak <kornel.janiak@nokia.com>

2 files changed, 118 insertions, 0 deletions

diff --git a/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactoryTest.kt b/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactoryTest.kt
new file mode 100644
index 00000000..a8ba4217
--- /dev/null
+++ b/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/api/ConsumerFactoryTest.kt
@@ -0,0 +1,64 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2019 NOKIA
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.kafka.api
+
+import com.nhaarman.mockitokotlin2.mock
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.entry
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+
+object ConsumerFactoryTest : Spek({
+    describe("ConsumerFactory") {
+        val kafkaBootstrapServers = "0.0.0.0:40,0.0.0.1:41"
+        given("consumer provider"){
+            val mockedKafkaConsumer = mock<KafkaConsumer>()
+            val consumerProvider = { mockedKafkaConsumer }
+            on("creation of consumer") {
+                val kafkaTopics = setOf("topic1", "topic2")
+                val consumer = ConsumerFactory.createConsumersForTopics(
+                        kafkaBootstrapServers,
+                        kafkaTopics,
+                        consumerProvider)
+                it("should create consumer"){
+                    assertThat(consumer).isNotEmpty.hasSize(2)
+                    assertThat(consumer).contains(entry("topic1", mockedKafkaConsumer),
+                            entry("topic2", mockedKafkaConsumer))
+                }
+            }
+            on("empty kafkaTopics set"){
+                val emptyKafkaTopics = emptySet<String>()
+                val consumer = ConsumerFactory.createConsumersForTopics(
+                        kafkaBootstrapServers,
+                        emptyKafkaTopics,
+                        consumerProvider)
+
+                it("should not create consumer"){
+                    assertThat(consumer).isEmpty()
+                }
+            }
+        }
+
+
+    }
+})
\ No newline at end of file
diff --git a/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSourceTest.kt b/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSourceTest.kt
new file mode 100644
index 00000000..43650f34
--- /dev/null
+++ b/sources/hv-collector-kafka/src/test/kotlin/org/onap/dcae/collectors/veshv/kafka/impl/KafkaSourceTest.kt
@@ -0,0 +1,54 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.kafka.impl
+
+import org.apache.kafka.clients.consumer.ConsumerConfig
+import org.apache.kafka.common.serialization.ByteArrayDeserializer
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
+ * @since August 2018
+ */
+internal class KafkaSourceTest : Spek({
+    val servers = "kafka1:9080,kafka2:9080"
+    val topics = setOf("topic1", "topic2")
+
+    describe("receiver options") {
+        val options = KafkaSource.createReceiverOptions(servers, topics)!!.toImmutable()
+
+        fun verifyProperty(key: String, expectedValue: Any) {
+            it("should have $key option set") {
+                assertThat(options.consumerProperty(key))
+                        .isEqualTo(expectedValue)
+            }
+        }
+
+        verifyProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, servers)
+        verifyProperty(ConsumerConfig.CLIENT_ID_CONFIG, "hv-collector-consumer")
+        verifyProperty(ConsumerConfig.GROUP_ID_CONFIG, "hv-collector-consumers")
+        verifyProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, ByteArrayDeserializer::class.java)
+        verifyProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, ByteArrayDeserializer::class.java)
+        verifyProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest")
+    }
+})
\ No newline at end of file