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/*
* ============LICENSE_START=======================================================
* dcaegen2-collectors-veshv
* ================================================================================
* Copyright (C) 2018-2019 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.config.impl
import com.google.gson.JsonParser
import com.nhaarman.mockitokotlin2.any
import com.nhaarman.mockitokotlin2.mock
import com.nhaarman.mockitokotlin2.times
import com.nhaarman.mockitokotlin2.verify
import com.nhaarman.mockitokotlin2.whenever
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
import org.onap.dcae.collectors.veshv.config.api.ConfigurationStateListener
import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient
import reactor.core.publisher.Mono
import reactor.test.StepVerifier
import java.time.Duration
internal object CbsClientAdapterTest : Spek({
describe("Config Binding Service Client Adapter") {
val cbsClientMock: CbsClient = mock()
val configStateListener: ConfigurationStateListener = mock()
given("successful client creation") {
val cbsClientMono = Mono.just(cbsClientMock)
val cut = CbsClientAdapter(cbsClientMono, firstRequestDelay, configStateListener, mdc, retry())
on("configurations stream in CBS") {
val firstConfigurationContent = "first"
val secondConfigurationContent = "second"
whenever(cbsClientMock.get(any())).thenReturn(
configurationMono(firstConfigurationContent),
configurationMono(secondConfigurationContent)
)
it("should return flux of fetched configurations") {
StepVerifier
.withVirtualTime {
cut.configurationUpdates().take(2)
}
.expectSubscription()
.expectNoEvent(firstRequestDelay)
.expectNext(configuration(firstConfigurationContent))
.expectNext(configuration(secondConfigurationContent))
.verifyComplete()
}
}
on("exception from CBS client on configuration fetch") {
whenever(cbsClientMock.get(any())).thenReturn(
Mono.error { sampleException }
)
it("should return error flux") {
StepVerifier.create(cut.configurationUpdates())
.expectErrorMatches { it === sampleException }
.verify()
}
}
}
given("repeated failure during client creation") {
val failedCreationsAmount = 3
var currentFailuresCount = 0
val cbsClientMono = Mono.fromCallable {
currentFailuresCount++
if (currentFailuresCount <= failedCreationsAmount) {
throw sampleException
} else {
cbsClientMock
}
}
val cut = CbsClientAdapter(cbsClientMono, firstRequestDelay, configStateListener, mdc,
retry(failedCreationsAmount + 1L))
on("CBS client creation") {
whenever(cbsClientMock.get(any())).thenReturn(configurationMono())
it("it should emit configuration after failures") {
StepVerifier
.withVirtualTime { cut.configurationUpdates().take(1) }
.expectSubscription()
.expectNoEvent(firstRequestDelay)
.expectNext(configuration())
.verifyComplete()
}
it("should call state listener when retrying") {
verify(configStateListener, times(failedCreationsAmount)).retrying()
}
}
}
}
})
private val firstRequestDelay = Duration.ofSeconds(10)
private val sampleException = Exception("Best regards from CBS")
private fun configuration(content: String = "whatever") =
JsonParser().parse("""{ "content": ${content} }""").asJsonObject
private fun configurationMono(content: String = "whatever") = Mono.just(configuration(content))
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