org.springframework.hateoas.alps.JacksonSerializationTests.java Source code

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Here is the source code for org.springframework.hateoas.alps.JacksonSerializationTests.java

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/*
 * Copyright 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.hateoas.alps;

import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
import static org.springframework.hateoas.alps.Alps.*;

import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;

import org.junit.Before;
import org.junit.Test;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;

import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

/**
 * Unit tests for serialization of ALPS documents.
 * 
 * @author Oliver Gierke
 */
public class JacksonSerializationTests {

    ObjectMapper mapper;

    @Before
    public void setUp() {

        mapper = new ObjectMapper();
        mapper.setSerializationInclusion(Include.NON_NULL);
        mapper.configure(SerializationFeature.INDENT_OUTPUT, true);
    }

    /**
     * @see #141
     */
    @Test
    public void writesSampleDocument() throws Exception {

        Alps alps = alps().//
                doc(doc().href("http://example.org/samples/full/doc.html").build()). //
                descriptors(Arrays.asList(//
                        descriptor().id("search").type(Type.SAFE).//
                                doc(new Doc("A search form with two inputs.", Format.TEXT)).//
                                descriptors(Arrays.asList( //
                                        descriptor().href("#resultType").build(), //
                                        descriptor().id("value").name("search").type(Type.SEMANTIC).build())//
                                ).build(), //
                        descriptor().id("resultType").type(Type.SEMANTIC).//
                                doc(doc().value("results format").build()).//
                                ext(ext().href("http://alps.io/ext/range").value("summary,detail").build()//
                                ).build())//
                ).build();

        assertThat(mapper.writeValueAsString(alps), is(read(new ClassPathResource("reference.json", getClass()))));
    }

    private static String read(Resource resource) throws IOException {

        Scanner scanner = null;

        try {

            scanner = new Scanner(resource.getInputStream());
            StringBuilder builder = new StringBuilder();

            while (scanner.hasNextLine()) {

                builder.append(scanner.nextLine());

                if (scanner.hasNextLine()) {
                    builder.append("\n");
                }
            }

            return builder.toString();

        } finally {
            if (scanner != null) {
                scanner.close();
            }
        }
    }
}