/
PayloadMethodArgumentResolverTests.java
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/
PayloadMethodArgumentResolverTests.java
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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.messaging.handler.annotation.support;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;
import java.util.Locale;
import java.util.Optional;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.core.DefaultParameterNameDiscoverer;
import org.springframework.core.MethodParameter;
import org.springframework.core.annotation.SynthesizingMethodParameter;
import org.springframework.messaging.Message;
import org.springframework.messaging.converter.MessageConversionException;
import org.springframework.messaging.converter.StringMessageConverter;
import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import org.springframework.validation.annotation.Validated;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
/**
* Test fixture for {@link PayloadMethodArgumentResolver}.
*
* @author Rossen Stoyanchev
* @author Brian Clozel
* @author Stephane Nicoll
*/
class PayloadMethodArgumentResolverTests {
private PayloadMethodArgumentResolver resolver;
private MethodParameter paramAnnotated;
private MethodParameter paramAnnotatedNotRequired;
private MethodParameter paramAnnotatedRequired;
private MethodParameter paramWithSpelExpression;
private MethodParameter paramOptional;
private MethodParameter paramNotAnnotated;
private MethodParameter paramValidatedNotAnnotated;
private MethodParameter paramValidated;
@BeforeEach
void setup() throws Exception {
this.resolver = new PayloadMethodArgumentResolver(new StringMessageConverter(), testValidator());
Method payloadMethod = PayloadMethodArgumentResolverTests.class.getDeclaredMethod(
"handleMessage", String.class, String.class, Locale.class,
String.class, Optional.class, String.class, String.class, String.class);
this.paramAnnotated = new SynthesizingMethodParameter(payloadMethod, 0);
this.paramAnnotatedNotRequired = new SynthesizingMethodParameter(payloadMethod, 1);
this.paramAnnotatedRequired = new SynthesizingMethodParameter(payloadMethod, 2);
this.paramWithSpelExpression = new SynthesizingMethodParameter(payloadMethod, 3);
this.paramOptional = new SynthesizingMethodParameter(payloadMethod, 4);
this.paramValidated = new SynthesizingMethodParameter(payloadMethod, 5);
this.paramValidated.initParameterNameDiscovery(new DefaultParameterNameDiscoverer());
this.paramValidatedNotAnnotated = new SynthesizingMethodParameter(payloadMethod, 6);
this.paramNotAnnotated = new SynthesizingMethodParameter(payloadMethod, 7);
}
@Test
void supportsParameter() {
assertThat(this.resolver.supportsParameter(this.paramAnnotated)).isTrue();
assertThat(this.resolver.supportsParameter(this.paramNotAnnotated)).isTrue();
PayloadMethodArgumentResolver strictResolver =
new PayloadMethodArgumentResolver(new StringMessageConverter(), testValidator(), false);
assertThat(strictResolver.supportsParameter(this.paramAnnotated)).isTrue();
assertThat(strictResolver.supportsParameter(this.paramNotAnnotated)).isFalse();
}
@Test
void resolveRequired() throws Exception {
Message<?> message = MessageBuilder.withPayload("ABC".getBytes()).build();
Object actual = this.resolver.resolveArgument(paramAnnotated, message);
assertThat(actual).isEqualTo("ABC");
}
@Test
void resolveRequiredEmpty() {
Message<?> message = MessageBuilder.withPayload("").build();
// required but empty
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(paramAnnotated, message));
}
@Test
void resolveRequiredEmptyNonAnnotatedParameter() {
Message<?> message = MessageBuilder.withPayload("").build();
// required but empty
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramNotAnnotated, message));
}
@Test
void resolveNotRequired() throws Exception {
Message<?> emptyByteArrayMessage = MessageBuilder.withPayload(new byte[0]).build();
assertThat(this.resolver.resolveArgument(this.paramAnnotatedNotRequired, emptyByteArrayMessage)).isNull();
Message<?> emptyStringMessage = MessageBuilder.withPayload(" ").build();
assertThat(this.resolver.resolveArgument(this.paramAnnotatedNotRequired, emptyStringMessage)).isNull();
assertThat(((Optional<?>) this.resolver.resolveArgument(this.paramOptional, emptyStringMessage))).isEmpty();
Message<?> emptyOptionalMessage = MessageBuilder.withPayload(Optional.empty()).build();
assertThat(this.resolver.resolveArgument(this.paramAnnotatedNotRequired, emptyOptionalMessage)).isNull();
Message<?> notEmptyMessage = MessageBuilder.withPayload("ABC".getBytes()).build();
assertThat(this.resolver.resolveArgument(this.paramAnnotatedNotRequired, notEmptyMessage)).isEqualTo("ABC");
}
@Test
void resolveOptionalTarget() throws Exception {
Message<?> message = MessageBuilder.withPayload("ABC".getBytes()).build();
Object actual = this.resolver.resolveArgument(paramOptional, message);
assertThat(((Optional<?>) actual).get()).isEqualTo("ABC");
}
@Test
void resolveOptionalSource() throws Exception {
Message<?> message = MessageBuilder.withPayload(Optional.of("ABC".getBytes())).build();
Object actual = this.resolver.resolveArgument(paramAnnotated, message);
assertThat(actual).isEqualTo("ABC");
}
@Test
void resolveNonConvertibleParam() {
Message<?> notEmptyMessage = MessageBuilder.withPayload(123).build();
assertThatExceptionOfType(MessageConversionException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramAnnotatedRequired, notEmptyMessage))
.withMessageContaining("Cannot convert");
}
@Test
void resolveSpelExpressionNotSupported() {
Message<?> message = MessageBuilder.withPayload("ABC".getBytes()).build();
assertThatIllegalStateException()
.isThrownBy(() -> this.resolver.resolveArgument(paramWithSpelExpression, message));
}
@Test
void resolveValidation() throws Exception {
Message<?> message = MessageBuilder.withPayload("ABC".getBytes()).build();
this.resolver.resolveArgument(this.paramValidated, message);
}
@Test
void resolveFailValidation() {
// See testValidator()
Message<?> message = MessageBuilder.withPayload("invalidValue".getBytes()).build();
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramValidated, message));
}
@Test
void resolveFailValidationNoConversionNecessary() {
Message<?> message = MessageBuilder.withPayload("invalidValue").build();
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramValidated, message));
}
@Test
void resolveNonAnnotatedParameter() throws Exception {
Message<?> notEmptyMessage = MessageBuilder.withPayload("ABC".getBytes()).build();
assertThat(this.resolver.resolveArgument(this.paramNotAnnotated, notEmptyMessage)).isEqualTo("ABC");
Message<?> emptyStringMessage = MessageBuilder.withPayload("").build();
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramValidated, emptyStringMessage));
}
@Test
void resolveNonAnnotatedParameterFailValidation() {
// See testValidator()
Message<?> message = MessageBuilder.withPayload("invalidValue".getBytes()).build();
assertThatExceptionOfType(MethodArgumentNotValidException.class)
.isThrownBy(() -> this.resolver.resolveArgument(this.paramValidatedNotAnnotated, message))
.withMessageContaining("invalid value");
}
private Validator testValidator() {
return new Validator() {
@Override
public boolean supports(Class<?> clazz) {
return String.class.isAssignableFrom(clazz);
}
@Override
public void validate(Object target, Errors errors) {
String value = (String) target;
if ("invalidValue".equals(value)) {
errors.reject("invalid value");
}
}
};
}
@SuppressWarnings("unused")
private void handleMessage(
@Payload String param,
@Payload(required=false) String paramNotRequired,
@Payload(required=true) Locale nonConvertibleRequiredParam,
@Payload("foo.bar") String paramWithSpelExpression,
@Payload Optional<String> optionalParam,
@MyValid @Payload String validParam,
@Validated String validParamNotAnnotated,
String paramNotAnnotated) {
}
@Validated
@Target({ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface MyValid {
}
}