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ReviewSubscriptionTest.kt
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ReviewSubscriptionTest.kt
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/*
* Copyright 2021 Netflix, Inc.
*
* 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.
*/
package com.example.demo.datafetchers
import com.example.demo.generated.client.AddReviewGraphQLQuery
import com.example.demo.generated.client.AddReviewProjectionRoot
import com.example.demo.generated.types.Review
import com.example.demo.generated.types.SubmittedReview
import com.example.demo.scalars.DateTimeScalarRegistration
import com.example.demo.services.DefaultReviewsService
import com.example.demo.services.ShowsService
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.netflix.graphql.dgs.DgsQueryExecutor
import com.netflix.graphql.dgs.autoconfig.DgsAutoConfiguration
import com.netflix.graphql.dgs.client.codegen.GraphQLQueryRequest
import graphql.ExecutionResult
import org.assertj.core.api.Assertions
import org.junit.jupiter.api.Test
import org.reactivestreams.Publisher
import org.reactivestreams.Subscriber
import org.reactivestreams.Subscription
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.test.mock.mockito.MockBean
import java.util.concurrent.CopyOnWriteArrayList
/**
* Test the review added subscription.
* The subscription query returns a Publisher<ExecutionResult>.
* Each time a review is added, a new ExecutionResult is given to subscriber.
* Normally, this publisher is consumed by the Websocket/SSE subscription handler and you don't deal with this code directly, but for testing purposes it's useful to use the stream directly.
*/
@SpringBootTest(classes = [DefaultReviewsService::class, ReviewsDataFetcher::class, DgsAutoConfiguration::class, DateTimeScalarRegistration::class])
class ReviewSubscriptionTest {
@Autowired
lateinit var dgsQueryExecutor: DgsQueryExecutor
@MockBean
lateinit var showsService: ShowsService
@Test
fun reviewSubscription() {
val executionResult = dgsQueryExecutor.execute("subscription { reviewAdded(showId: 1) {starScore} }")
val reviewPublisher = executionResult.getData<Publisher<ExecutionResult>>()
val reviews = CopyOnWriteArrayList<Review>()
reviewPublisher.subscribe(object: Subscriber<ExecutionResult> {
override fun onSubscribe(s: Subscription) {
s.request(2)
}
override fun onNext(t: ExecutionResult) {
val data = t.getData<Map<String, Any>>()
reviews.add(jacksonObjectMapper().convertValue(data["reviewAdded"], Review::class.java))
}
override fun onError(t: Throwable?) {
}
override fun onComplete() {
}
})
addReview()
addReview()
Assertions.assertThat(reviews.size).isEqualTo(2)
}
private fun addReview(): ExecutionResult {
val graphQLQueryRequest =
GraphQLQueryRequest(
AddReviewGraphQLQuery.Builder()
.review(SubmittedReview(1, "testuser", 5))
.build(),
AddReviewProjectionRoot<Nothing, Nothing>()
.username()
.starScore()
)
return dgsQueryExecutor.execute(graphQLQueryRequest.serialize())
}
}