/*
* 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.messaging.handler.annotation.support;
import java.lang.reflect.Method;
import java.util.Locale;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.core.MethodParameter;
import org.springframework.messaging.Message;
import org.springframework.messaging.converter.MessageConversionException;
import org.springframework.messaging.converter.MessageConverter;
import org.springframework.messaging.support.ErrorMessage;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.messaging.support.MessageBuilder;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
/**
* Unit tests for {@link MessageMethodArgumentResolver}.
*
* @author Stephane Nicoll
* @author Juergen Hoeller
*/
public class MessageMethodArgumentResolverTests {
@Rule
public final ExpectedException thrown = ExpectedException.none();
private MessageConverter converter;
private MessageMethodArgumentResolver resolver;
private Method method;
@Before
public void setup() throws Exception {
this.method = MessageMethodArgumentResolverTests.class.getDeclaredMethod("handle",
Message.class, Message.class, Message.class, Message.class, ErrorMessage.class);
this.converter = mock(MessageConverter.class);
this.resolver = new MessageMethodArgumentResolver(this.converter);
}
@Test
public void resolveWithPayloadTypeAsWildcard() throws Exception {
Message<String> message = MessageBuilder.withPayload("test").build();
MethodParameter parameter = new MethodParameter(this.method, 0);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithMatchingPayloadType() throws Exception {
Message<Integer> message = MessageBuilder.withPayload(123).build();
MethodParameter parameter = new MethodParameter(this.method, 1);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithPayloadTypeSubclass() throws Exception {
Message<Integer> message = MessageBuilder.withPayload(123).build();
MethodParameter parameter = new MethodParameter(this.method, 2);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithConversion() throws Exception {
Message<String> message = MessageBuilder.withPayload("test").build();
MethodParameter parameter = new MethodParameter(this.method, 1);
when(this.converter.fromMessage(message, Integer.class)).thenReturn(4);
@SuppressWarnings("unchecked")
Message<Integer> actual = (Message<Integer>) this.resolver.resolveArgument(parameter, message);
assertNotNull(actual);
assertSame(message.getHeaders(), actual.getHeaders());
assertEquals(new Integer(4), actual.getPayload());
}
@Test
public void resolveWithConversionNoMatchingConverter() throws Exception {
Message<String> message = MessageBuilder.withPayload("test").build();
MethodParameter parameter = new MethodParameter(this.method, 1);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MessageConversionException.class);
thrown.expectMessage(Integer.class.getName());
thrown.expectMessage(String.class.getName());
this.resolver.resolveArgument(parameter, message);
}
@Test
public void resolveWithConversionEmptyPayload() throws Exception {
Message<String> message = MessageBuilder.withPayload("").build();
MethodParameter parameter = new MethodParameter(this.method, 1);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MessageConversionException.class);
thrown.expectMessage("payload is empty");
thrown.expectMessage(Integer.class.getName());
thrown.expectMessage(String.class.getName());
this.resolver.resolveArgument(parameter, message);
}
@Test
public void resolveWithPayloadTypeUpperBound() throws Exception {
Message<Integer> message = MessageBuilder.withPayload(123).build();
MethodParameter parameter = new MethodParameter(this.method, 3);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithPayloadTypeOutOfBound() throws Exception {
Message<Locale> message = MessageBuilder.withPayload(Locale.getDefault()).build();
MethodParameter parameter = new MethodParameter(this.method, 3);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MessageConversionException.class);
thrown.expectMessage(Number.class.getName());
thrown.expectMessage(Locale.class.getName());
this.resolver.resolveArgument(parameter, message);
}
@Test
public void resolveMessageSubclassMatch() throws Exception {
ErrorMessage message = new ErrorMessage(new UnsupportedOperationException());
MethodParameter parameter = new MethodParameter(this.method, 4);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithMessageSubclassAndPayloadWildcard() throws Exception {
ErrorMessage message = new ErrorMessage(new UnsupportedOperationException());
MethodParameter parameter = new MethodParameter(this.method, 0);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithWrongMessageType() throws Exception {
UnsupportedOperationException ex = new UnsupportedOperationException();
Message<? extends Throwable> message = new GenericMessage<Throwable>(ex);
MethodParameter parameter = new MethodParameter(this.method, 4);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MethodArgumentTypeMismatchException.class);
thrown.expectMessage(ErrorMessage.class.getName());
thrown.expectMessage(GenericMessage.class.getName());
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithPayloadTypeAsWildcardAndNoConverter() throws Exception {
this.resolver = new MessageMethodArgumentResolver();
Message<String> message = MessageBuilder.withPayload("test").build();
MethodParameter parameter = new MethodParameter(this.method, 0);
assertTrue(this.resolver.supportsParameter(parameter));
assertSame(message, this.resolver.resolveArgument(parameter, message));
}
@Test
public void resolveWithConversionNeededButNoConverter() throws Exception {
this.resolver = new MessageMethodArgumentResolver();
Message<String> message = MessageBuilder.withPayload("test").build();
MethodParameter parameter = new MethodParameter(this.method, 1);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MessageConversionException.class);
thrown.expectMessage(Integer.class.getName());
thrown.expectMessage(String.class.getName());
this.resolver.resolveArgument(parameter, message);
}
@Test
public void resolveWithConversionEmptyPayloadButNoConverter() throws Exception {
this.resolver = new MessageMethodArgumentResolver();
Message<String> message = MessageBuilder.withPayload("").build();
MethodParameter parameter = new MethodParameter(this.method, 1);
assertTrue(this.resolver.supportsParameter(parameter));
thrown.expect(MessageConversionException.class);
thrown.expectMessage("payload is empty");
thrown.expectMessage(Integer.class.getName());
thrown.expectMessage(String.class.getName());
this.resolver.resolveArgument(parameter, message);
}
@SuppressWarnings("unused")
private void handle(
Message<?> wildcardPayload,
Message<Integer> integerPayload,
Message<Number> numberPayload,
Message<? extends Number> anyNumberPayload,
ErrorMessage subClass) {
}
}