/* * Copyright 2002-2018 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 * * 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 org.springframework.web.reactive.result.method.annotation; import java.lang.reflect.Method; import java.util.Optional; import org.junit.Before; import org.junit.Test; import reactor.core.publisher.Mono; import reactor.test.StepVerifier; import org.springframework.context.annotation.AnnotationConfigApplicationContext; import org.springframework.core.DefaultParameterNameDiscoverer; import org.springframework.core.GenericTypeResolver; import org.springframework.core.MethodParameter; import org.springframework.core.ReactiveAdapterRegistry; import org.springframework.core.annotation.SynthesizingMethodParameter; import org.springframework.format.support.DefaultFormattingConversionService; import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest; import org.springframework.mock.web.test.server.MockServerWebExchange; import org.springframework.util.ReflectionUtils; import org.springframework.web.bind.annotation.SessionAttribute; import org.springframework.web.bind.support.ConfigurableWebBindingInitializer; import org.springframework.web.reactive.BindingContext; import org.springframework.web.server.ServerWebExchange; import org.springframework.web.server.ServerWebInputException; import org.springframework.web.server.WebSession; import static org.junit.Assert.*; import static org.mockito.Mockito.*; /** * Unit tests for {@link SessionAttributeMethodArgumentResolver}. * @author Rossen Stoyanchev */ public class SessionAttributeMethodArgumentResolverTests { private SessionAttributeMethodArgumentResolver resolver; private ServerWebExchange exchange; private WebSession session; private Method handleMethod; @Before @SuppressWarnings("resource") public void setup() { AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(); context.refresh(); ReactiveAdapterRegistry adapterRegistry = ReactiveAdapterRegistry.getSharedInstance(); this.resolver = new SessionAttributeMethodArgumentResolver(context.getBeanFactory(), adapterRegistry); this.session = mock(WebSession.class); this.exchange = MockServerWebExchange.builder(MockServerHttpRequest.get("/")).session(this.session).build(); this.handleMethod = ReflectionUtils.findMethod(getClass(), "handleWithSessionAttribute", (Class<?>[]) null); } @Test public void supportsParameter() { assertTrue(this.resolver.supportsParameter(new MethodParameter(this.handleMethod, 0))); assertFalse(this.resolver.supportsParameter(new MethodParameter(this.handleMethod, 4))); } @Test public void resolve() { MethodParameter param = initMethodParameter(0); Mono<Object> mono = this.resolver.resolveArgument(param, new BindingContext(), this.exchange); StepVerifier.create(mono).expectError(ServerWebInputException.class).verify(); Foo foo = new Foo(); when(this.session.getAttribute("foo")).thenReturn(foo); mono = this.resolver.resolveArgument(param, new BindingContext(), this.exchange); assertSame(foo, mono.block()); } @Test public void resolveWithName() { MethodParameter param = initMethodParameter(1); Foo foo = new Foo(); when(this.session.getAttribute("specialFoo")).thenReturn(foo); Mono<Object> mono = this.resolver.resolveArgument(param, new BindingContext(), this.exchange); assertSame(foo, mono.block()); } @Test public void resolveNotRequired() { MethodParameter param = initMethodParameter(2); Mono<Object> mono = this.resolver.resolveArgument(param, new BindingContext(), this.exchange); assertNull(mono.block()); Foo foo = new Foo(); when(this.session.getAttribute("foo")).thenReturn(foo); mono = this.resolver.resolveArgument(param, new BindingContext(), this.exchange); assertSame(foo, mono.block()); } @SuppressWarnings("unchecked") @Test public void resolveOptional() { MethodParameter param = initMethodParameter(3); Optional<Object> actual = (Optional<Object>) this.resolver .resolveArgument(param, new BindingContext(), this.exchange).block(); assertNotNull(actual); assertFalse(actual.isPresent()); ConfigurableWebBindingInitializer initializer = new ConfigurableWebBindingInitializer(); initializer.setConversionService(new DefaultFormattingConversionService()); BindingContext bindingContext = new BindingContext(initializer); Foo foo = new Foo(); when(this.session.getAttribute("foo")).thenReturn(foo); actual = (Optional<Object>) this.resolver.resolveArgument(param, bindingContext, this.exchange).block(); assertNotNull(actual); assertTrue(actual.isPresent()); assertSame(foo, actual.get()); } private MethodParameter initMethodParameter(int parameterIndex) { MethodParameter param = new SynthesizingMethodParameter(this.handleMethod, parameterIndex); param.initParameterNameDiscovery(new DefaultParameterNameDiscoverer()); GenericTypeResolver.resolveParameterType(param, this.resolver.getClass()); return param; } @SuppressWarnings({"unused", "OptionalUsedAsFieldOrParameterType"}) private void handleWithSessionAttribute( @SessionAttribute Foo foo, @SessionAttribute("specialFoo") Foo namedFoo, @SessionAttribute(name="foo", required = false) Foo notRequiredFoo, @SessionAttribute(name="foo") Optional<Foo> optionalFoo, String notSupported) { } private static class Foo { } }