TestJacksonUtils.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.avro.util.internal;

import java.util.Collections;
import org.apache.avro.JsonProperties;
import org.apache.avro.Schema;
import org.apache.avro.SchemaBuilder;
import org.codehaus.jackson.node.ArrayNode;
import org.codehaus.jackson.node.BooleanNode;
import org.codehaus.jackson.node.DoubleNode;
import org.codehaus.jackson.node.IntNode;
import org.codehaus.jackson.node.JsonNodeFactory;
import org.codehaus.jackson.node.LongNode;
import org.codehaus.jackson.node.NullNode;
import org.codehaus.jackson.node.ObjectNode;
import org.codehaus.jackson.node.TextNode;
import org.junit.Test;

import static org.apache.avro.util.internal.JacksonUtils.toJsonNode;
import static org.apache.avro.util.internal.JacksonUtils.toObject;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;

public class TestJacksonUtils {

  enum Direction {
    UP, DOWN;
  }

  @Test
  public void testToJsonNode() {
    assertEquals(null, toJsonNode(null));
    assertEquals(NullNode.getInstance(), toJsonNode(JsonProperties.NULL_VALUE));
    assertEquals(BooleanNode.TRUE, toJsonNode(true));
    assertEquals(IntNode.valueOf(1), toJsonNode(1));
    assertEquals(LongNode.valueOf(2), toJsonNode(2L));
    assertEquals(DoubleNode.valueOf(1.0), toJsonNode(1.0f));
    assertEquals(DoubleNode.valueOf(2.0), toJsonNode(2.0));
    assertEquals(TextNode.valueOf("\u0001\u0002"), toJsonNode(new byte[] { 1, 2 }));
    assertEquals(TextNode.valueOf("a"), toJsonNode("a"));
    assertEquals(TextNode.valueOf("UP"), toJsonNode(Direction.UP));

    ArrayNode an = JsonNodeFactory.instance.arrayNode();
    an.add(1);
    assertEquals(an, toJsonNode(Collections.singletonList(1)));

    ObjectNode on = JsonNodeFactory.instance.objectNode();
    on.put("a", 1);
    assertEquals(on, toJsonNode(Collections.singletonMap("a", 1)));
  }

  @Test
  public void testToObject() {
    assertEquals(null, toObject(null));
    assertEquals(JsonProperties.NULL_VALUE, toObject(NullNode.getInstance()));
    assertEquals(true, toObject(BooleanNode.TRUE));
    assertEquals(1, toObject(IntNode.valueOf(1)));
    assertEquals(2L, toObject(IntNode.valueOf(2), Schema.create(Schema.Type.LONG)));
    assertEquals(1.0f, toObject(DoubleNode.valueOf(1.0), Schema.create(Schema.Type.FLOAT)));
    assertEquals(2.0, toObject(DoubleNode.valueOf(2.0)));
    assertEquals(TextNode.valueOf("\u0001\u0002"), toJsonNode(new byte[]{1, 2}));
    assertArrayEquals(new byte[]{1, 2},
        (byte[]) toObject(TextNode.valueOf("\u0001\u0002"), Schema.create(Schema.Type.BYTES)));
    assertEquals("a", toObject(TextNode.valueOf("a")));
    assertEquals("UP", toObject(TextNode.valueOf("UP"),
        SchemaBuilder.enumeration("Direction").symbols("UP", "DOWN")));

    ArrayNode an = JsonNodeFactory.instance.arrayNode();
    an.add(1);
    assertEquals(Collections.singletonList(1), toObject(an));

    ObjectNode on = JsonNodeFactory.instance.objectNode();
    on.put("a", 1);
    assertEquals(Collections.singletonMap("a", 1), toObject(on));
    assertEquals(Collections.singletonMap("a", 1L), toObject(on,
        SchemaBuilder.record("r").fields().requiredLong("a").endRecord()));

    assertEquals(JsonProperties.NULL_VALUE, toObject(NullNode.getInstance(),
        SchemaBuilder.unionOf().nullType().and().intType().endUnion()));

    assertEquals("a", toObject(TextNode.valueOf("a"),
        SchemaBuilder.unionOf().stringType().and().intType().endUnion()));
  }

}