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path: root/src/test/java/org/yaml/snakeyaml/YamlComposeTest.java
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/**
 * Copyright (c) 2008, SnakeYAML
 *
 * 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;

import java.io.StringReader;
import junit.framework.TestCase;
import org.yaml.snakeyaml.nodes.MappingNode;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeId;
import org.yaml.snakeyaml.nodes.ScalarNode;

public class YamlComposeTest extends TestCase {

  public void testComposeManyDocuments() {
    try {
      Yaml yaml = new Yaml();
      yaml.compose(new StringReader("abc: 56\n---\n123\n---\n456"));
      fail("YAML contans more then one document.");
    } catch (Exception e) {
      assertTrue("<<<" + e.getMessage() + ">>>",
          e.getMessage().startsWith("expected a single document in the stream"));
    }
  }

  public void testComposeFromReader() {
    Yaml yaml = new Yaml();
    MappingNode node = (MappingNode) yaml.compose(new StringReader("abc: 56"));
    ScalarNode node1 = (ScalarNode) node.getValue().get(0).getKeyNode();
    assertEquals("abc", node1.getValue());
    ScalarNode node2 = (ScalarNode) node.getValue().get(0).getValueNode();
    assertEquals("56", node2.getValue());
  }

  public void testComposeAllFromReader() {
    Yaml yaml = new Yaml();
    boolean first = true;
    for (Node node : yaml.composeAll(new StringReader("abc: 56\n---\n123\n---\n456"))) {
      if (first) {
        assertEquals(NodeId.mapping, node.getNodeId());
      } else {
        assertEquals(NodeId.scalar, node.getNodeId());
      }
      first = false;
    }
  }

  public void testComposeAllOneDocument() {
    Yaml yaml = new Yaml();
    for (Node node : yaml.composeAll(new StringReader("6"))) {
      assertEquals(NodeId.scalar, node.getNodeId());
    }
  }
}