/*
* Copyright 2002-2016 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.net.URI;
import java.util.Arrays;
import java.util.Map;
import java.util.Optional;
import org.junit.Before;
import org.junit.Test;
import reactor.core.publisher.Mono;
import reactor.core.test.TestSubscriber;
import org.springframework.core.LocalVariableTableParameterNameDiscoverer;
import org.springframework.core.MethodParameter;
import org.springframework.core.ParameterNameDiscoverer;
import org.springframework.core.annotation.SynthesizingMethodParameter;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.http.HttpMethod;
import org.springframework.http.server.reactive.MockServerHttpRequest;
import org.springframework.http.server.reactive.MockServerHttpResponse;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.util.ReflectionUtils;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.ServerWebInputException;
import org.springframework.web.server.adapter.DefaultServerWebExchange;
import org.springframework.web.server.session.MockWebSessionManager;
import org.springframework.web.server.session.WebSessionManager;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
/**
* Unit tests for {@link RequestParamMethodArgumentResolver}.
*
* @author Rossen Stoyanchev
*/
public class RequestParamMethodArgumentResolverTests {
private RequestParamMethodArgumentResolver resolver;
private ServerWebExchange exchange;
private MethodParameter paramNamedDefaultValueString;
private MethodParameter paramNamedStringArray;
private MethodParameter paramNamedMap;
private MethodParameter paramMap;
private MethodParameter paramStringNotAnnot;
private MethodParameter paramRequired;
private MethodParameter paramNotRequired;
private MethodParameter paramOptional;
@Before @SuppressWarnings("ConfusingArgumentToVarargsMethod")
public void setUp() throws Exception {
ConversionService conversionService = new DefaultConversionService();
this.resolver = new RequestParamMethodArgumentResolver(conversionService, null, true);
ParameterNameDiscoverer paramNameDiscoverer = new LocalVariableTableParameterNameDiscoverer();
Method method = ReflectionUtils.findMethod(getClass(), "handle", (Class<?>[]) null);
ServerHttpRequest request = new MockServerHttpRequest(HttpMethod.GET, new URI("/"));
WebSessionManager sessionManager = new MockWebSessionManager();
this.exchange = new DefaultServerWebExchange(request, new MockServerHttpResponse(), sessionManager);
this.paramNamedDefaultValueString = new SynthesizingMethodParameter(method, 0);
this.paramNamedStringArray = new SynthesizingMethodParameter(method, 1);
this.paramNamedMap = new SynthesizingMethodParameter(method, 2);
this.paramMap = new SynthesizingMethodParameter(method, 3);
this.paramStringNotAnnot = new SynthesizingMethodParameter(method, 4);
this.paramStringNotAnnot.initParameterNameDiscovery(paramNameDiscoverer);
this.paramRequired = new SynthesizingMethodParameter(method, 5);
this.paramNotRequired = new SynthesizingMethodParameter(method, 6);
this.paramOptional = new SynthesizingMethodParameter(method, 7);
}
@Test
public void supportsParameter() {
this.resolver = new RequestParamMethodArgumentResolver(new GenericConversionService(), null, true);
assertTrue(this.resolver.supportsParameter(this.paramNamedDefaultValueString));
assertTrue(this.resolver.supportsParameter(this.paramNamedStringArray));
assertTrue(this.resolver.supportsParameter(this.paramNamedMap));
assertFalse(this.resolver.supportsParameter(this.paramMap));
assertTrue(this.resolver.supportsParameter(this.paramStringNotAnnot));
assertTrue(this.resolver.supportsParameter(this.paramRequired));
assertTrue(this.resolver.supportsParameter(this.paramNotRequired));
assertTrue(this.resolver.supportsParameter(this.paramOptional));
this.resolver = new RequestParamMethodArgumentResolver(new GenericConversionService(), null, false);
assertFalse(this.resolver.supportsParameter(this.paramStringNotAnnot));
}
@Test
public void resolveString() throws Exception {
String expected = "foo";
this.exchange.getRequest().getQueryParams().set("name", expected);
Mono<Object> mono = this.resolver.resolveArgument(this.paramNamedDefaultValueString, null, this.exchange);
Object result = mono.block();
assertTrue(result instanceof String);
assertEquals("Invalid result", expected, result);
}
@Test
public void resolveStringArray() throws Exception {
String[] expected = {"foo", "bar"};
this.exchange.getRequest().getQueryParams().put("name", Arrays.asList(expected));
Mono<Object> mono = this.resolver.resolveArgument(this.paramNamedStringArray, null, this.exchange);
Object result = mono.block();
assertTrue(result instanceof String[]);
assertArrayEquals(expected, (String[]) result);
}
@Test
public void resolveDefaultValue() throws Exception {
Mono<Object> mono = this.resolver.resolveArgument(paramNamedDefaultValueString, null, this.exchange);
Object result = mono.block();
assertTrue(result instanceof String);
assertEquals("Invalid result", "bar", result);
}
@Test
public void missingRequestParam() throws Exception {
Mono<Object> mono = this.resolver.resolveArgument(paramNamedStringArray, null, this.exchange);
TestSubscriber
.subscribe(mono)
.assertError(ServerWebInputException.class);
}
@Test
public void resolveSimpleTypeParam() throws Exception {
this.exchange.getRequest().getQueryParams().set("stringNotAnnot", "plainValue");
Mono<Object> mono = this.resolver.resolveArgument(paramStringNotAnnot, null, this.exchange);
Object result = mono.block();
assertTrue(result instanceof String);
assertEquals("plainValue", result);
}
@Test // SPR-8561
public void resolveSimpleTypeParamToNull() throws Exception {
Mono<Object> mono = this.resolver.resolveArgument(paramStringNotAnnot, null, this.exchange);
Object result = mono.block();
assertNull(result);
}
@Test // SPR-10180
public void resolveEmptyValueToDefault() throws Exception {
this.exchange.getRequest().getQueryParams().set("name", "");
Mono<Object> mono = this.resolver.resolveArgument(paramNamedDefaultValueString, null, this.exchange);
Object result = mono.block();
assertEquals("bar", result);
}
@Test
public void resolveEmptyValueWithoutDefault() throws Exception {
this.exchange.getRequest().getQueryParams().set("stringNotAnnot", "");
Mono<Object> mono = this.resolver.resolveArgument(paramStringNotAnnot, null, this.exchange);
Object result = mono.block();
assertEquals("", result);
}
@Test
public void resolveEmptyValueRequiredWithoutDefault() throws Exception {
this.exchange.getRequest().getQueryParams().set("name", "");
Mono<Object> mono = this.resolver.resolveArgument(paramRequired, null, this.exchange);
Object result = mono.block();
assertEquals("", result);
}
@Test
public void resolveOptionalParamValue() throws Exception {
Mono<Object> mono = this.resolver.resolveArgument(paramOptional, null, this.exchange);
Object result = mono.block();
assertEquals(Optional.empty(), result);
this.exchange.getRequest().getQueryParams().set("name", "123");
mono = resolver.resolveArgument(paramOptional, null, this.exchange);
result = mono.block();
assertEquals(Optional.class, result.getClass());
Optional<?> value = (Optional<?>) result;
assertTrue(value.isPresent());
assertEquals(123, value.get());
}
@SuppressWarnings({"unused", "OptionalUsedAsFieldOrParameterType"})
public void handle(
@RequestParam(name = "name", defaultValue = "bar") String param1,
@RequestParam("name") String[] param2,
@RequestParam("name") Map<?, ?> param3,
@RequestParam Map<?, ?> param4,
String stringNotAnnot,
@RequestParam("name") String paramRequired,
@RequestParam(name = "name", required = false) String paramNotRequired,
@RequestParam("name") Optional<Integer> paramOptional) {
}
}