BodyParserJsonTest.java

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 * Wisdom-Framework
 * %%
 * Copyright (C) 2013 - 2015 Wisdom Framework
 * %%
 * 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,
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 * See the License for the specific language governing permissions and
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package org.wisdom.content.bodyparsers;

import com.google.common.base.Charsets;
import org.junit.Before;
import org.junit.Test;
import org.wisdom.api.http.MimeTypes;
import org.wisdom.content.jackson.JacksonSingleton;
import org.wisdom.test.parents.FakeContext;

import java.lang.reflect.Type;
import java.util.List;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Check the Body Parser responsible for parsing JSON body.
 */
public class BodyParserJsonTest {

    private BodyParserJson parser;

    /**
     * This field is used to retrieve the Type.
     */
    List<Data> tmp;

    @Before
    public void setUp() {
        JacksonSingleton singleton = new JacksonSingleton();
        singleton.validate();
        parser = new BodyParserJson();
        parser.json = singleton;
    }

    @Test
    public void testParsing() {
        FakeContext context = new FakeContext().setBody("{" +
                        "\"name\":\"wisdom\"," +
                        "\"friends\":[\"clement\",\"jonathan\"]," +
                        "\"age\":2}");
        Data data = parser.invoke(context, Data.class);
        assertThat(data.getName()).isEqualTo("wisdom");
        assertThat(data.getFriends()).containsExactly("clement", "jonathan");
        assertThat(data.getAge()).isEqualTo(2);
    }

    @Test
    public void testParsingWithGenericType() throws NoSuchFieldException {
        Type type = this.getClass().getDeclaredField("tmp").getGenericType();
        FakeContext context = new FakeContext().setBody("[{" +
                "\"name\":\"wisdom\"," +
                "\"friends\":[\"clement\",\"jonathan\"]," +
                "\"age\":2}]");
        List<Data> list =  parser.invoke(context, List.class, type);
        assertThat(list).hasSize(1);
        assertThat(list.get(0)).isInstanceOf(Data.class);
        Data data = list.get(0);
        assertThat(data.getName()).isEqualTo("wisdom");
        assertThat(data.getFriends()).containsExactly("clement", "jonathan");
        assertThat(data.getAge()).isEqualTo(2);
    }

    @Test
    public void testParsingFromByteArray() {
        String body = "{" +
                "\"name\":\"wisdom\"," +
                "\"friends\":[\"clement\",\"jonathan\"]," +
                "\"age\":2}";
        Data data = parser.invoke(body.getBytes(Charsets.UTF_8), Data.class);
        assertThat(data.getName()).isEqualTo("wisdom");
        assertThat(data.getFriends()).containsExactly("clement", "jonathan");
        assertThat(data.getAge()).isEqualTo(2);
    }

    @Test
    public void testNullAndEmpty() throws NoSuchFieldException {
        Type type = this.getClass().getDeclaredField("tmp").getGenericType();
        FakeContext context = new FakeContext().setBody("");
        List<Data> data = parser.invoke(context, List.class, type);
        assertThat(data).isNull();

        context = new FakeContext().setBody(null);
        data = parser.invoke(context, List.class, type);
        assertThat(data).isNull();

        context = new FakeContext().setBody(null);
        data = parser.invoke(context, List.class);
        assertThat(data).isNull();

        context = new FakeContext().setBody("");
        data = parser.invoke(context, List.class);
        assertThat(data).isNull();
    }

    @Test
    public void testMimeTypes() {
        assertThat(parser.getContentTypes())
                .hasSize(1).contains(MimeTypes.JSON);
    }


}