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SSESubscriptionGraphQLClientTest.kt
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SSESubscriptionGraphQLClientTest.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.netflix.graphql.dgs.client
import com.netflix.graphql.dgs.DgsComponent
import com.netflix.graphql.dgs.DgsSubscription
import com.netflix.graphql.dgs.DgsTypeDefinitionRegistry
import com.netflix.graphql.dgs.autoconfig.DgsAutoConfiguration
import com.netflix.graphql.dgs.subscriptions.sse.DgsSSEAutoConfig
import graphql.language.FieldDefinition.newFieldDefinition
import graphql.language.ObjectTypeDefinition.newObjectTypeDefinition
import graphql.language.TypeName
import graphql.schema.idl.TypeDefinitionRegistry
import org.junit.jupiter.api.Assertions.assertThrows
import org.junit.jupiter.api.Test
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.web.server.LocalServerPort
import org.springframework.web.reactive.function.client.WebClient
import org.springframework.web.reactive.function.client.WebClientResponseException
import reactor.core.publisher.Flux
import reactor.test.StepVerifier
@SpringBootTest(
classes = [DgsAutoConfiguration::class, DgsSSEAutoConfig::class, TestApp::class],
webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT
)
internal class SSESubscriptionGraphQLClientTest {
@LocalServerPort
var port: Int? = null
@Test
fun `A successful subscription should publish ticks`() {
val client = SSESubscriptionGraphQLClient("/subscriptions", WebClient.create("http://localhost:$port"))
val reactiveExecuteQuery =
client.reactiveExecuteQuery("subscription {numbers}", emptyMap()).mapNotNull { r -> r.data["numbers"] }
StepVerifier.create(reactiveExecuteQuery)
.expectNext(1, 2, 3)
.expectComplete()
.verify()
}
@Test
fun `An error on the subscription should send the error as a response and end the subscription`() {
val client = SSESubscriptionGraphQLClient("/subscriptions", WebClient.create("http://localhost:$port"))
val reactiveExecuteQuery = client.reactiveExecuteQuery("subscription {withError}", emptyMap())
StepVerifier.create(reactiveExecuteQuery)
.consumeNextWith { r -> r.hasErrors() }
.expectComplete()
.verify()
}
@Test
fun `A connection error should result in a WebClientException`() {
val client = SSESubscriptionGraphQLClient("/wrongurl", WebClient.create("http://localhost:$port"))
assertThrows(WebClientResponseException.NotFound::class.java) {
client.reactiveExecuteQuery("subscription {withError}", emptyMap()).blockLast()
}
}
@Test
fun `A badly formatted query should result in a WebClientException`() {
val client = SSESubscriptionGraphQLClient("/subscriptions", WebClient.create("http://localhost:$port"))
assertThrows(WebClientResponseException.BadRequest::class.java) {
client.reactiveExecuteQuery("invalid query", emptyMap()).blockLast()
}
}
@Test
fun `An invalid query should result in a WebClientException`() {
val client = SSESubscriptionGraphQLClient("/subscriptions", WebClient.create("http://localhost:$port"))
assertThrows(WebClientResponseException.BadRequest::class.java) {
client.reactiveExecuteQuery("subscriptions { unkownField }", emptyMap()).blockLast()
}
}
}
@SpringBootApplication
internal open class TestApp {
@DgsComponent
class SubscriptionDataFetcher {
@DgsSubscription
fun numbers(): Flux<Int> {
return Flux.just(1, 2, 3)
}
@DgsSubscription
fun withError(): Flux<Int> {
return Flux.error(IllegalArgumentException("testing"), true)
}
@DgsTypeDefinitionRegistry
fun typeDefinitionRegistry(): TypeDefinitionRegistry {
val newRegistry = TypeDefinitionRegistry()
newRegistry.add(
newObjectTypeDefinition().name("Subscription")
.fieldDefinition(
newFieldDefinition()
.name("numbers")
.type(TypeName("Int")).build()
)
.fieldDefinition(
newFieldDefinition()
.name("withError")
.type(TypeName("Int")).build()
)
.build()
)
return newRegistry
}
}
}