sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * dcaegen2-collectors-veshv
   4  * ================================================================================
   5  * Copyright (C) 2018 NOKIA
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
  21
  22 import arrow.core.Left
  23 import arrow.core.None
  24 import arrow.core.Some
  25 import arrow.effects.IO
  26 import com.google.protobuf.ByteString
  27 import com.nhaarman.mockitokotlin2.any
  28 import com.nhaarman.mockitokotlin2.eq
  29 import com.nhaarman.mockitokotlin2.mock
  30 import com.nhaarman.mockitokotlin2.never
  31 import com.nhaarman.mockitokotlin2.verify
  32 import com.nhaarman.mockitokotlin2.whenever
  33 import org.assertj.core.api.Assertions.assertThat
  34 import org.jetbrains.spek.api.Spek
  35 import org.jetbrains.spek.api.dsl.describe
  36 import org.jetbrains.spek.api.dsl.it
  37 import org.mockito.ArgumentMatchers.anySet
  38 import org.onap.ves.VesEventOuterClass.CommonEventHeader
  39 import org.onap.ves.VesEventOuterClass.VesEvent
  40 import java.util.concurrent.ConcurrentLinkedQueue
  41
  42 /**
  43  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  44  * @since August 2018
  45  */
  46 internal class DcaeAppSimulatorTest : Spek({
  47     lateinit var consumerFactory: ConsumerFactory
  48     lateinit var messageStreamValidation: MessageStreamValidation
  49     lateinit var consumer: Consumer
  50     lateinit var cut: DcaeAppSimulator
  51
  52     beforeEachTest {
  53         consumerFactory = mock()
  54         messageStreamValidation = mock()
  55         consumer = mock()
  56         cut = DcaeAppSimulator(consumerFactory, messageStreamValidation)
  57
  58         whenever(consumerFactory.createConsumerForTopics(anySet())).thenReturn(IO.just(consumer))
  59     }
  60
  61     fun consumerState(vararg messages: ByteArray) = ConsumerState(ConcurrentLinkedQueue(messages.toList()))
  62
  63     describe("listenToTopics") {
  64         val topics = setOf("perf3gpp", "faults")
  65
  66         it("should fail when topic list is empty") {
  67             val result = cut.listenToTopics(setOf()).attempt().unsafeRunSync()
  68             assertThat(result.isLeft()).isTrue()
  69         }
  70
  71         it("should fail when topic list contains empty strings") {
  72             val result = cut.listenToTopics(setOf("perf3gpp", " ", "faults")).attempt().unsafeRunSync()
  73             assertThat(result.isLeft()).isTrue()
  74         }
  75
  76         it("should subscribe to given topics") {
  77             cut.listenToTopics(topics).unsafeRunSync()
  78             verify(consumerFactory).createConsumerForTopics(topics)
  79         }
  80
  81         it("should subscribe to given topics when called with comma separated list") {
  82             cut.listenToTopics("perf3gpp,faults").unsafeRunSync()
  83             verify(consumerFactory).createConsumerForTopics(topics)
  84         }
  85
  86         it("should handle errors") {
  87             // given
  88             val error = RuntimeException("WTF")
  89             whenever(consumerFactory.createConsumerForTopics(anySet()))
  90                     .thenReturn(IO.raiseError(error))
  91
  92             // when
  93             val result = cut.listenToTopics("perf3gpp").attempt().unsafeRunSync()
  94
  95             // then
  96             assertThat(result).isEqualTo(Left(error))
  97         }
  98     }
  99
 100     describe("state") {
 101
 102         it("should return None when topics hasn't been initialized") {
 103             assertThat(cut.state()).isEqualTo(None)
 104         }
 105
 106         describe("when topics are initialized") {
 107             beforeEachTest {
 108                 cut.listenToTopics("perf3gpp").unsafeRunSync()
 109             }
 110
 111             it("should return some state when it has been set") {
 112                 val state = consumerState()
 113                 whenever(consumer.currentState()).thenReturn(state)
 114
 115                 assertThat(cut.state()).isEqualTo(Some(state))
 116             }
 117         }
 118     }
 119
 120     describe("resetState") {
 121         it("should do nothing when topics hasn't been initialized") {
 122             cut.resetState().unsafeRunSync()
 123             verify(consumer, never()).reset()
 124         }
 125
 126         describe("when topics are initialized") {
 127             beforeEachTest {
 128                 cut.listenToTopics("perf3gpp").unsafeRunSync()
 129             }
 130
 131             it("should reset the state") {
 132                 // given
 133                 whenever(consumer.reset()).thenReturn(IO.unit)
 134
 135                 // when
 136                 cut.resetState().unsafeRunSync()
 137
 138                 // then
 139                 verify(consumer).reset()
 140             }
 141         }
 142     }
 143
 144     describe("validate") {
 145         beforeEachTest {
 146             whenever(messageStreamValidation.validate(any(), any())).thenReturn(IO.just(true))
 147         }
 148
 149         it("should use empty list when consumer is unavailable") {
 150             // when
 151             val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
 152
 153             // then
 154             verify(messageStreamValidation).validate(any(), eq(emptyList()))
 155             assertThat(result).isTrue()
 156         }
 157
 158         it("should delegate to MessageStreamValidation") {
 159             // given
 160             cut.listenToTopics("perf3gpp").unsafeRunSync()
 161             whenever(consumer.currentState()).thenReturn(consumerState(vesEvent().toByteArray()))
 162
 163             // when
 164             val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
 165
 166             // then
 167             verify(messageStreamValidation).validate(any(), any())
 168             assertThat(result).isTrue()
 169         }
 170     }
 171 })
 172
 173
 174 private const val DUMMY_EVENT_ID = "aaa"
 175 private const val DUMMY_PAYLOAD = "payload"
 176
 177 private fun vesEvent(eventId: String = DUMMY_EVENT_ID, payload: String = DUMMY_PAYLOAD): VesEvent {
 178     return VesEvent.newBuilder()
 179             .setCommonEventHeader(CommonEventHeader.newBuilder()
 180                     .setEventId(eventId))
 181             .setEventFields(ByteString.copyFrom(payload.toByteArray()))
 182             .build()
 183 }