NotificationSubjectHandlerMethodArgumentResolverTest.java

/*
 * Copyright 2013-2014 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.cloud.aws.messaging.endpoint;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.cloud.aws.core.support.documentation.RuntimeUse;
import org.springframework.cloud.aws.messaging.config.annotation.NotificationSubject;
import org.springframework.core.MethodParameter;
import org.springframework.core.io.ClassPathResource;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.ReflectionUtils;
import org.springframework.web.context.request.ServletWebRequest;

import java.lang.reflect.Method;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;

public class NotificationSubjectHandlerMethodArgumentResolverTest {


    @Rule
    public ExpectedException expectedException = ExpectedException.none();

    @Test
    public void resolveArgument_wrongMessageType_reportsErrors() throws Exception {
        //Arrange
        this.expectedException.expect(IllegalArgumentException.class);
        this.expectedException.expectMessage("@NotificationMessage annotated parameters are only allowed");

        NotificationSubjectHandlerMethodArgumentResolver resolver = new NotificationSubjectHandlerMethodArgumentResolver();

        byte[] subscriptionRequestJsonContent = FileCopyUtils.copyToByteArray(new ClassPathResource("subscriptionConfirmation.json", getClass()).getInputStream());
        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
        servletRequest.setContent(subscriptionRequestJsonContent);

        MethodParameter methodParameter = new MethodParameter(ReflectionUtils.findMethod(NotificationMethods.class, "subscriptionMethod", NotificationStatus.class), 0);

        //Act
        resolver.resolveArgument(methodParameter, null, new ServletWebRequest(servletRequest), null);

        //Assert
    }

    @Test
    public void resolveArgument_notificationMessageTypeWithSubject_reportsErrors() throws Exception {
        //Arrange
        NotificationSubjectHandlerMethodArgumentResolver resolver = new NotificationSubjectHandlerMethodArgumentResolver();

        byte[] subscriptionRequestJsonContent = FileCopyUtils.copyToByteArray(new ClassPathResource("notificationMessage.json", getClass()).getInputStream());
        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
        servletRequest.setContent(subscriptionRequestJsonContent);

        MethodParameter methodParameter = new MethodParameter(ReflectionUtils.findMethod(NotificationMethods.class, "subscriptionMethod", NotificationStatus.class), 0);

        //Act
        Object argument = resolver.resolveArgument(methodParameter, null, new ServletWebRequest(servletRequest), null);

        //Assert
        assertEquals("asdasd", argument);
    }

    @Test
    public void supportsParameter_withWrongParameterType_shouldReturnFalse() throws Exception {
        // Arrange
        NotificationSubjectHandlerMethodArgumentResolver resolver = new NotificationSubjectHandlerMethodArgumentResolver();
        Method methodWithWrongParameterType = this.getClass().getDeclaredMethod("methodWithWrongParameterType", Integer.class);
        MethodParameter methodParameter = new MethodParameter(methodWithWrongParameterType, 0);

        // Act
        boolean supportsParameter = resolver.supportsParameter(methodParameter);

        // Assert
        assertFalse(supportsParameter);
    }

    @SuppressWarnings("EmptyMethod")
    @RuntimeUse
    private void methodWithWrongParameterType(@NotificationSubject Integer message) {
    }
}