com.cedarsoft.serialization.jackson.JacksonTest.java Source code

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Here is the source code for com.cedarsoft.serialization.jackson.JacksonTest.java

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/**
 * Copyright (C) cedarsoft GmbH.
 *
 * Licensed under the GNU General Public License version 3 (the "License")
 * with Classpath Exception; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *         http://www.cedarsoft.org/gpl3ce
 *         (GPL 3 with Classpath Exception)
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3 only, as
 * published by the Free Software Foundation. cedarsoft GmbH designates this
 * particular file as subject to the "Classpath" exception as provided
 * by cedarsoft GmbH in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 3 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 3 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
 * or visit www.cedarsoft.com if you need additional information or
 * have any questions.
 */

package com.cedarsoft.serialization.jackson;

import com.cedarsoft.test.utils.JsonUtils;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import org.junit.*;

import javax.annotation.Nonnull;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import static org.junit.Assert.*;

/**
 *
 */
public class JacksonTest {
    private JsonFactory jsonFactory;
    private ByteArrayOutputStream out;
    private JsonGenerator generator;

    @Before
    public void setUp() throws Exception {
        jsonFactory = JacksonSupport.getJsonFactory();
        out = new ByteArrayOutputStream();
        generator = jsonFactory.createGenerator(out, JsonEncoding.UTF8);
    }

    @Test
    public void testNull() throws Exception {
        generator.writeNull();
        verifyGenerator("null");

        JsonParser parser = jsonFactory.createJsonParser("null");
        assertEquals(null, parser.getCurrentToken());
        assertEquals(JsonToken.VALUE_NULL, parser.nextToken());
        assertEquals(null, parser.nextToken());
    }

    @Test
    public void testBasic() throws Exception {
        generator.writeStartObject();
        generator.writeEndObject();
        verifyGenerator("{}");
    }

    @Test
    public void testBasic2() throws Exception {
        generator.writeStartObject();
        generator.writeFieldName("daFieldName");
        generator.writeString("daStringValue");
        generator.writeEndObject();
        verifyGenerator("{\n" + "  \"daFieldName\" : \"daStringValue\"\n" + "}");
    }

    @Test
    public void testArray() throws Exception {
        generator.writeStartObject();
        generator.writeFieldName("daArray");
        generator.writeStartArray();
        generator.writeString("daContent1");
        generator.writeString("daContent2");
        generator.writeEndArray();
        generator.writeEndObject();
        verifyGenerator("{\n" + "  \"daArray\" : [ \"daContent1\", \"daContent2\" ]\n" + "}");
    }

    @Test
    public void testRawArray() throws Exception {
        generator.writeStartArray();
        generator.writeString("daContent1");
        generator.writeString("daContent2");
        generator.writeEndArray();
        verifyGenerator("[ \"daContent1\", \"daContent2\" ]");
    }

    @Test
    public void testOnlyText() throws Exception {
        generator.writeString("daContent1");
        verifyGenerator("\"daContent1\"");
    }

    private void verifyGenerator(@Nonnull String control) throws IOException {
        generator.flush();
        JsonUtils.assertJsonEquals(control, out.toString());
    }
}