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Support @ModelAttribute with suspending function in WebFlux
Closes spring-projectsgh-30894
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.../org/springframework/web/reactive/result/method/annotation/ModelInitializerKotlinTests.kt
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/* | ||
* Copyright 2002-2023 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. | ||
*/ | ||
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package org.springframework.web.reactive.result.method.annotation | ||
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import kotlinx.coroutines.delay | ||
import org.assertj.core.api.Assertions | ||
import org.junit.jupiter.api.BeforeEach | ||
import org.junit.jupiter.api.Test | ||
import org.springframework.context.support.StaticApplicationContext | ||
import org.springframework.core.ReactiveAdapterRegistry | ||
import org.springframework.ui.Model | ||
import org.springframework.web.bind.annotation.GetMapping | ||
import org.springframework.web.bind.annotation.ModelAttribute | ||
import org.springframework.web.bind.support.ConfigurableWebBindingInitializer | ||
import org.springframework.web.method.HandlerMethod | ||
import org.springframework.web.server.ServerWebExchange | ||
import org.springframework.web.testfixture.http.server.reactive.MockServerHttpRequest | ||
import org.springframework.web.testfixture.method.ResolvableMethod | ||
import org.springframework.web.testfixture.server.MockServerWebExchange | ||
import reactor.core.publisher.Mono | ||
import java.time.Duration | ||
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/** | ||
* Kotlin test fixture for [ModelInitializer]. | ||
* | ||
* @author Sebastien Deleuze | ||
*/ | ||
class ModelInitializerKotlinTests { | ||
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private val timeout = Duration.ofMillis(5000) | ||
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private lateinit var modelInitializer: ModelInitializer | ||
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private val exchange: ServerWebExchange = MockServerWebExchange.from(MockServerHttpRequest.get("/path")) | ||
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@BeforeEach | ||
fun setup() { | ||
val adapterRegistry = ReactiveAdapterRegistry.getSharedInstance() | ||
val resolverConfigurer = ArgumentResolverConfigurer() | ||
resolverConfigurer.addCustomResolver(ModelMethodArgumentResolver(adapterRegistry)) | ||
val methodResolver = ControllerMethodResolver(resolverConfigurer, adapterRegistry, StaticApplicationContext(), | ||
emptyList()) | ||
modelInitializer = ModelInitializer(methodResolver, adapterRegistry) | ||
} | ||
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@Test | ||
@Suppress("UNCHECKED_CAST") | ||
fun modelAttributeMethods() { | ||
val controller = TestController() | ||
val method = ResolvableMethod.on(TestController::class.java).annotPresent(GetMapping::class.java) | ||
.resolveMethod() | ||
val handlerMethod = HandlerMethod(controller, method) | ||
val context = InitBinderBindingContext(ConfigurableWebBindingInitializer(), emptyList()) | ||
this.modelInitializer.initModel(handlerMethod, context, this.exchange).block(timeout) | ||
val model = context.model.asMap() | ||
Assertions.assertThat(model).hasSize(2) | ||
val monoValue = model["suspendingReturnValue"] as Mono<TestBean> | ||
Assertions.assertThat(monoValue.block(timeout)!!.name).isEqualTo("Suspending return value") | ||
val value = model["suspendingModelParameter"] as TestBean | ||
Assertions.assertThat(value.name).isEqualTo("Suspending model parameter") | ||
} | ||
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private data class TestBean(val name: String) | ||
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private class TestController { | ||
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@ModelAttribute("suspendingReturnValue") | ||
suspend fun suspendingReturnValue(): TestBean { | ||
delay(1) | ||
return TestBean("Suspending return value") | ||
} | ||
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@ModelAttribute | ||
suspend fun suspendingModelParameter(model: Model) { | ||
delay(1) | ||
model.addAttribute("suspendingModelParameter", TestBean("Suspending model parameter")) | ||
} | ||
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@GetMapping | ||
fun handleGet() { | ||
} | ||
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} | ||
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} |