/
CoroutinesIntegrationTests.kt
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/
CoroutinesIntegrationTests.kt
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/*
* Copyright 2002-2024 the original author or authors.
*
* 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 org.springframework.web.reactive.result.method.annotation
import kotlinx.coroutines.Deferred
import kotlinx.coroutines.DelicateCoroutinesApi
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.async
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.flow
import org.assertj.core.api.Assertions.assertThat
import org.assertj.core.api.Assertions.assertThatExceptionOfType
import org.junit.jupiter.api.Assumptions.assumeFalse
import org.springframework.context.ApplicationContext
import org.springframework.context.annotation.AnnotationConfigApplicationContext
import org.springframework.context.annotation.ComponentScan
import org.springframework.context.annotation.Configuration
import org.springframework.http.HttpHeaders
import org.springframework.http.HttpStatus
import org.springframework.http.ResponseEntity
import org.springframework.web.bind.annotation.GetMapping
import org.springframework.web.bind.annotation.RestController
import org.springframework.web.client.HttpServerErrorException
import org.springframework.web.reactive.config.EnableWebFlux
import org.springframework.web.testfixture.http.server.reactive.bootstrap.HttpServer
import org.springframework.web.testfixture.http.server.reactive.bootstrap.UndertowHttpServer
import reactor.core.publisher.Flux
class CoroutinesIntegrationTests : AbstractRequestMappingIntegrationTests() {
override fun initApplicationContext(): ApplicationContext {
val context = AnnotationConfigApplicationContext()
context.register(WebConfig::class.java)
context.refresh()
return context
}
@ParameterizedHttpServerTest
fun `Suspending handler method`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/suspend", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foo")
}
@ParameterizedHttpServerTest
fun `Handler method returning Deferred`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/deferred", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foo")
}
@ParameterizedHttpServerTest // gh-27292
fun `Suspending ResponseEntity handler method`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/suspend-response-entity", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("{\"value\":\"foo\"}")
}
@ParameterizedHttpServerTest
fun `Handler method returning Flow`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/flow", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foobar")
}
@ParameterizedHttpServerTest
fun `Suspending handler method returning Flow`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/suspending-flow", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foobar")
}
@ParameterizedHttpServerTest
fun `Suspending handler method throwing exception`(httpServer: HttpServer) {
startServer(httpServer)
assertThatExceptionOfType(HttpServerErrorException.InternalServerError::class.java).isThrownBy {
performGet("/error", HttpHeaders.EMPTY, String::class.java)
}
}
@ParameterizedHttpServerTest
fun `Handler method returning Flow throwing exception`(httpServer: HttpServer) {
startServer(httpServer)
assertThatExceptionOfType(HttpServerErrorException.InternalServerError::class.java).isThrownBy {
performGet("/flow-error", HttpHeaders.EMPTY, String::class.java)
}
}
@ParameterizedHttpServerTest
fun `Suspending handler method returning ResponseEntity of Flux `(httpServer: HttpServer) {
assumeFalse(httpServer is UndertowHttpServer, "Undertow currently fails")
startServer(httpServer)
val entity = performGet("/entity-flux", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foobar")
}
@ParameterizedHttpServerTest
fun `Suspending handler method returning ResponseEntity of Flow`(httpServer: HttpServer) {
startServer(httpServer)
val entity = performGet("/entity-flow", HttpHeaders.EMPTY, String::class.java)
assertThat(entity.statusCode).isEqualTo(HttpStatus.OK)
assertThat(entity.body).isEqualTo("foobar")
}
@Configuration
@EnableWebFlux
@ComponentScan(resourcePattern = "**/CoroutinesIntegrationTests*")
open class WebConfig
@OptIn(DelicateCoroutinesApi::class)
@RestController
class CoroutinesController {
@GetMapping("/suspend")
suspend fun suspendingEndpoint(): String {
delay(1)
return "foo"
}
@GetMapping("/deferred")
fun deferredEndpoint(): Deferred<String> = GlobalScope.async {
delay(1)
"foo"
}
@GetMapping("/suspend-response-entity")
suspend fun suspendingResponseEntityEndpoint(): ResponseEntity<FooContainer<String>> {
delay(1)
return ResponseEntity.ok(FooContainer("foo"))
}
@GetMapping("/flow")
fun flowEndpoint()= flow {
emit("foo")
delay(1)
emit("bar")
delay(1)
}
@GetMapping("/suspending-flow")
suspend fun suspendingFlowEndpoint(): Flow<String> {
delay(1)
return flow {
emit("foo")
delay(1)
emit("bar")
delay(1)
}
}
@GetMapping("/error")
suspend fun error() {
delay(1)
throw IllegalStateException()
}
@GetMapping("/flow-error")
suspend fun flowError() = flow<String> {
delay(1)
throw IllegalStateException()
}
@GetMapping("/entity-flux")
suspend fun entityFlux() : ResponseEntity<Flux<String>> {
val strings = Flux.just("foo", "bar")
delay(1)
return ResponseEntity.ok().body(strings)
}
@GetMapping("/entity-flow")
suspend fun entityFlow() : ResponseEntity<Flow<String>> {
val strings = flow {
emit("foo")
delay(1)
emit("bar")
delay(1)
}
return ResponseEntity.ok().body(strings)
}
}
class FooContainer<T>(val value: T)
}