src/test/java/org/yaml/snakeyaml/issues/issue58/NullValueDumperTest.java

/**
 * Copyright (c) 2008-2011, http://www.snakeyaml.org
 *
 * 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.yaml.snakeyaml.issues.issue58;

import java.util.ArrayList;

import junit.framework.TestCase;

import org.yaml.snakeyaml.JavaBeanDumper;
import org.yaml.snakeyaml.Yaml;

public class NullValueDumperTest extends TestCase {

    public static class Foo {
        private ArrayList<Object> bar = new ArrayList<Object>();

        public ArrayList<Object> getBar() {
            return bar;
        }

        public void setBar(ArrayList<Object> bar) {
            this.bar = bar;
        }
    }

    public void testListElement() {
        final Foo foo = new Foo();
        foo.bar.add(1);
        foo.bar.add("A");
        foo.bar.add(3.14);

        assertEquals("bar:\n- 1\n- A\n- 3.14\n", new JavaBeanDumper().dump(foo));
    }

    public void testNullListElement() {
        final Foo foo = new Foo();

        foo.bar.add(1);
        foo.bar.add("A");
        foo.bar.add(null);
        foo.bar.add(3.14);
        assertEquals("bar:\n- 1\n- A\n- null\n- 3.14\n", new JavaBeanDumper().dump(foo));
        assertEquals(
                "!!org.yaml.snakeyaml.issues.issue58.NullValueDumperTest$Foo\nbar: [1, A, null, 3.14]\n",
                new Yaml().dump(foo));
    }
}