org.springsource.restbucks.AbstractWebIntegrationTest.java Source code

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Here is the source code for org.springsource.restbucks.AbstractWebIntegrationTest.java

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/*
 * Copyright 2013-2015 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.springsource.restbucks;

import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;

import org.junit.Before;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.hateoas.LinkDiscoverer;
import org.springframework.hateoas.LinkDiscoverers;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.ResultMatcher;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

/**
 * Base class to derive concrete web test classes from.
 * 
 * @author Oliver Gierke
 */
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@SpringApplicationConfiguration(classes = Restbucks.class)
@DirtiesContext
public abstract class AbstractWebIntegrationTest {

    protected @Autowired WebApplicationContext context;
    protected @Autowired LinkDiscoverers links;
    protected MockMvc mvc;

    @Before
    public void setUp() {
        mvc = MockMvcBuilders.webAppContextSetup(context).build();
    }

    /**
     * Creates a {@link ResultMatcher} that checks for the presence of a link with the given rel.
     * 
     * @param rel
     * @return
     */
    protected ResultMatcher linkWithRelIsPresent(final String rel) {
        return new LinkWithRelMatcher(rel, true);
    }

    /**
     * Creates a {@link ResultMatcher} that checks for the non-presence of a link with the given rel.
     * 
     * @param rel
     * @return
     */
    protected ResultMatcher linkWithRelIsNotPresent(String rel) {
        return new LinkWithRelMatcher(rel, false);
    }

    protected LinkDiscoverer getDiscovererFor(MockHttpServletResponse response) {
        return links.getLinkDiscovererFor(response.getContentType());
    }

    private class LinkWithRelMatcher implements ResultMatcher {

        private final String rel;
        private final boolean present;

        public LinkWithRelMatcher(String rel, boolean present) {
            this.rel = rel;
            this.present = present;
        }

        /* 
         * (non-Javadoc)
         * @see org.springframework.test.web.servlet.ResultMatcher#match(org.springframework.test.web.servlet.MvcResult)
         */
        @Override
        public void match(MvcResult result) throws Exception {

            MockHttpServletResponse response = result.getResponse();
            String content = response.getContentAsString();
            LinkDiscoverer discoverer = links.getLinkDiscovererFor(response.getContentType());

            assertThat(discoverer.findLinkWithRel(rel, content), is(present ? notNullValue() : nullValue()));
        }
    }
}