Implement simple health check mechanism
[dcaegen2/collectors/hv-ves.git] / hv-collector-health-check / src / test / kotlin / org / onap / dcae / collectors / veshv / healthcheck / impl / HealthStateProviderImplTest.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.healthcheck.impl
21
22 import org.jetbrains.spek.api.Spek
23 import org.jetbrains.spek.api.dsl.describe
24 import org.jetbrains.spek.api.dsl.given
25 import org.jetbrains.spek.api.dsl.it
26 import org.jetbrains.spek.api.dsl.on
27 import org.onap.dcae.collectors.veshv.healthcheck.api.HealthState
28 import reactor.test.StepVerifier
29
30 /**
31  * @author Jakub Dudycz <jakub.dudycz@nokia.com>
32  * @since August 2018
33  */
34 object HealthStateProviderImplTest : Spek({
35     describe("Health state provider") {
36             val healthStateProviderImpl = HealthStateProviderImpl()
37             on("health state update") {
38                 healthStateProviderImpl.changeState(HealthState.HEALTHY)
39                 healthStateProviderImpl.changeState(HealthState.WAITING_FOR_CONSUL_CONFIGURATION)
40                 healthStateProviderImpl.changeState(HealthState.WAITING_FOR_CONSUL_CONFIGURATION)
41                 healthStateProviderImpl.changeState(HealthState.CONSUL_CONFIGURATION_NOT_FOUND)
42
43                 it("should push new health state to the subscriber") {
44                     StepVerifier
45                             .create(healthStateProviderImpl().take(4))
46                             .expectNext(HealthState.HEALTHY)
47                             .expectNext(HealthState.WAITING_FOR_CONSUL_CONFIGURATION)
48                             .expectNext(HealthState.WAITING_FOR_CONSUL_CONFIGURATION)
49                             .expectNext(HealthState.CONSUL_CONFIGURATION_NOT_FOUND)
50                             .verifyComplete()
51                 }
52             }
53     }
54 })