src/test/java/org/yaml/snakeyaml/issues/issue437/BinaryRoundTripTest.java

/**
 * Copyright (c) 2008, 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.issue437;

import junit.framework.TestCase;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.events.Event;
import org.yaml.snakeyaml.events.ImplicitTuple;
import org.yaml.snakeyaml.events.ScalarEvent;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeId;
import org.yaml.snakeyaml.nodes.ScalarNode;
import org.yaml.snakeyaml.nodes.Tag;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class BinaryRoundTripTest extends TestCase {

    public void testBinary() {
        Yaml underTest = new Yaml();
        String source = "\u0096";
        String serialized = underTest.dump(source);
        assertEquals("!!binary |-\n" +
                "  wpY=\n", serialized);
        //parse back to bytes
        byte[] deserialized = underTest.load(serialized);
        assertEquals(source, new String(deserialized));
    }

    public void testBinaryNode() {
        Yaml underTest = new Yaml();
        String source = "\u0096";
        Node node = underTest.represent(source);
        //check Node
        assertEquals(Tag.BINARY, node.getTag());
        assertEquals(NodeId.scalar, node.getNodeId());
        ScalarNode scalar = (ScalarNode) node;
        assertEquals("wpY=", scalar.getValue());
        //check Event
        List<Event> events = underTest.serialize(node);
        assertEquals(5, events.size());
        ScalarEvent data = (ScalarEvent) events.get(2);
        assertEquals(Tag.BINARY.toString(), data.getTag());
        assertEquals(DumperOptions.ScalarStyle.LITERAL, data.getScalarStyle());
        assertEquals("wpY=", data.getValue());
        ImplicitTuple implicit = data.getImplicit();
        assertFalse(implicit.canOmitTagInPlainScalar());
        assertFalse(implicit.canOmitTagInNonPlainScalar());
    }

    public void testStrNode() {
        DumperOptions options = new DumperOptions();
        options.setNonPrintableStyle(DumperOptions.NonPrintableStyle.ESCAPE);
        Yaml underTest = new Yaml(options);
        String source = "\u0096";
        Node node = underTest.represent(source);
        assertEquals(Tag.STR, node.getTag());
        assertEquals(NodeId.scalar, node.getNodeId());
        ScalarNode scalar = (ScalarNode) node;
        assertEquals("\u0096", scalar.getValue());
    }

    public void testRoundTripBinary() {
        DumperOptions options = new DumperOptions();
        options.setNonPrintableStyle(DumperOptions.NonPrintableStyle.ESCAPE);
        Yaml underTest = new Yaml(options);
        Map<String, String> toSerialized = new HashMap<>();
        toSerialized.put("key", "a\u0096b");
        String output = underTest.dump(toSerialized);
        assertEquals("{key: \"a\\x96b\"}\n", output);
        Map<String, String> parsed = underTest.load(output);
        assertEquals(toSerialized.get("key"), parsed.get("key"));
        assertEquals(toSerialized, parsed);
    }
}