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SimpleSubscriptionIT.kt
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SimpleSubscriptionIT.kt
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/*
* Copyright 2021 Expedia, 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
*
* https://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.expediagroup.graphql.examples.server.spring.subscriptions
import com.expediagroup.graphql.examples.server.spring.SUBSCRIPTION_ENDPOINT
import com.expediagroup.graphql.server.spring.subscriptions.SubscriptionOperationMessage
import com.expediagroup.graphql.server.spring.subscriptions.SubscriptionOperationMessage.ClientMessages.GQL_CONNECTION_INIT
import com.expediagroup.graphql.server.spring.subscriptions.SubscriptionOperationMessage.ClientMessages.GQL_START
import com.expediagroup.graphql.server.spring.subscriptions.SubscriptionOperationMessage.ServerMessages
import com.expediagroup.graphql.types.GraphQLRequest
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
import com.fasterxml.jackson.module.kotlin.readValue
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.MethodOrderer
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.TestInstance
import org.junit.jupiter.api.TestMethodOrder
import org.springframework.boot.autoconfigure.EnableAutoConfiguration
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.web.server.LocalServerPort
import org.springframework.web.reactive.socket.WebSocketSession
import org.springframework.web.reactive.socket.client.ReactorNettyWebSocketClient
import reactor.core.publisher.Flux
import reactor.core.publisher.Mono
import reactor.test.StepVerifier
import reactor.test.publisher.TestPublisher
import java.net.URI
import kotlin.random.Random
@SpringBootTest(
webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
properties = ["graphql.packages=com.expediagroup.graphql.examples.server.spring"]
)
@EnableAutoConfiguration
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
@TestMethodOrder(MethodOrderer.MethodName::class)
@Disabled("unknown race condition is causing random failures when run using GH action, cannot reproduce it locally")
class SimpleSubscriptionIT(@LocalServerPort private var port: Int) {
private val objectMapper = jacksonObjectMapper()
private val client = ReactorNettyWebSocketClient()
private val uri: URI = URI.create("ws://localhost:$port$SUBSCRIPTION_ENDPOINT")
@Test
fun `verify singleValueSubscription query`() {
val query = "singleValueSubscription"
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output) }.subscribe()
StepVerifier.create(output)
.expectNext("{\"data\":{\"$query\":1}}")
.expectComplete()
.verify()
subscription.dispose()
}
@Test
fun `verify counter query`() {
val query = "counter(limit: 2)"
val numberRegex = "(\\-?[0-9]+)"
val expectedDataRegex = Regex("\\{\"data\":\\{\"counter\":$numberRegex}}")
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output) }.subscribe()
StepVerifier.create(output)
.expectNextMatches { s -> s.matches(expectedDataRegex) }
.expectNextMatches { s -> s.matches(expectedDataRegex) }
.expectComplete()
.verify()
subscription.dispose()
}
@Test
fun `verify singleValueThenError query`() {
val query = "singleValueThenError"
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output) }.subscribe()
StepVerifier.create(output)
.expectNextCount(1)
.expectComplete()
.verify()
subscription.dispose()
}
@Test
fun `verify flow query`() {
val query = "flow"
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output) }.subscribe()
StepVerifier.create(output)
.expectNext("{\"data\":{\"$query\":1}}")
.expectNext("{\"data\":{\"$query\":2}}")
.expectNext("{\"data\":{\"$query\":4}}")
.expectComplete()
.verify()
subscription.dispose()
}
@Test
fun `verify subscriptionContext query without connectionParams`() {
val query = "subscriptionContext"
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output) }.subscribe()
StepVerifier.create(output)
.expectNext("{\"data\":{\"$query\":\"none\"}}")
.expectNext("{\"data\":{\"$query\":\"value 2\"}}")
.expectNext("{\"data\":{\"$query\":\"value3\"}}")
.expectComplete()
.verify()
subscription.dispose()
}
@Test
fun `verify subscriptionContext query with connectionParams read by MySubscriptionHooks`() {
val query = "subscriptionContext"
val output = TestPublisher.create<String>()
val subscription = client.execute(uri) { session -> executeSubscription(session, query, output, mapOf("Authorization" to "mytoken")) }.subscribe()
StepVerifier.create(output)
.expectNext("{\"data\":{\"$query\":\"mytoken\"}}")
.expectNext("{\"data\":{\"$query\":\"value 2\"}}")
.expectNext("{\"data\":{\"$query\":\"value3\"}}")
.expectComplete()
.verify()
subscription.dispose()
}
private fun executeSubscription(
session: WebSocketSession,
query: String,
output: TestPublisher<String>,
initPayload: Any? = null
): Mono<Void> {
val id = Random.nextInt().toString()
val initMessage = getInitMessage(id, initPayload)
val startMessage = getStartMessage(query, id)
return session.send(Flux.just(session.textMessage(initMessage)))
.then(session.send(Flux.just(session.textMessage(startMessage))))
.thenMany(
session.receive()
.map { objectMapper.readValue<SubscriptionOperationMessage>(it.payloadAsText) }
.doOnNext {
if (it.type == ServerMessages.GQL_DATA.type) {
val data = objectMapper.writeValueAsString(it.payload)
output.next(data)
} else if (it.type == ServerMessages.GQL_COMPLETE.type) {
output.complete()
}
}
)
.then()
}
private fun SubscriptionOperationMessage.toJson() = objectMapper.writeValueAsString(this)
private fun getInitMessage(id: String, payload: Any?) = SubscriptionOperationMessage(GQL_CONNECTION_INIT.type, id = id, payload = payload).toJson()
private fun getStartMessage(query: String, id: String): String {
val request = GraphQLRequest("subscription { $query }")
return SubscriptionOperationMessage(GQL_START.type, id = id, payload = request).toJson()
}
}