/**
 * 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.util.ArrayList;
import java.util.Arrays;
import java.util.EnumMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import junit.framework.TestCase;
import org.yaml.snakeyaml.constructor.Constructor;

public class EnumTest extends TestCase {

  // Dumping
  public void testDumpEnum() {
    Yaml yaml = new Yaml();
    String output = yaml.dump(Suit.CLUBS);
    assertEquals("!!org.yaml.snakeyaml.Suit 'CLUBS'\n", output);
  }

  public void testDumpOverriddenToString() {
    Yaml yaml = new Yaml();
    String output = yaml.dump(DumperOptions.FlowStyle.BLOCK);
    assertEquals("!!org.yaml.snakeyaml.DumperOptions$FlowStyle 'BLOCK'\n", output);
  }

  public void testDumpEnumArray() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    String output = yaml.dump(Suit.values());
    assertEquals(
        "- !!org.yaml.snakeyaml.Suit 'CLUBS'\n- !!org.yaml.snakeyaml.Suit 'DIAMONDS'\n- !!org.yaml.snakeyaml.Suit 'HEARTS'\n- !!org.yaml.snakeyaml.Suit 'SPADES'\n",
        output);
  }

  public void testDumpEnumList() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    List<Suit> list = Arrays.asList(Suit.values());
    String output = yaml.dump(list);
    assertEquals(
        "- !!org.yaml.snakeyaml.Suit 'CLUBS'\n- !!org.yaml.snakeyaml.Suit 'DIAMONDS'\n- !!org.yaml.snakeyaml.Suit 'HEARTS'\n- !!org.yaml.snakeyaml.Suit 'SPADES'\n",
        output);
  }

  public void testDumpEnumListNoAnchor() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    List<Suit> list = new ArrayList<Suit>(3);
    list.add(Suit.CLUBS);
    list.add(Suit.DIAMONDS);
    list.add(Suit.CLUBS);
    String output = yaml.dump(list);
    assertEquals(
        "- !!org.yaml.snakeyaml.Suit 'CLUBS'\n- !!org.yaml.snakeyaml.Suit 'DIAMONDS'\n- !!org.yaml.snakeyaml.Suit 'CLUBS'\n",
        output);
  }

  public void testDumpEnumMap() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    Map<String, Suit> map = new LinkedHashMap<String, Suit>();
    map.put("c", Suit.CLUBS);
    map.put("d", Suit.DIAMONDS);
    String output = yaml.dump(map);
    assertEquals("c: !!org.yaml.snakeyaml.Suit 'CLUBS'\nd: !!org.yaml.snakeyaml.Suit 'DIAMONDS'\n",
        output);
  }

  public void testDumpEnumMap2() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    Map<Suit, Integer> map = new EnumMap<Suit, Integer>(Suit.class);
    map.put(Suit.CLUBS, 0);
    map.put(Suit.DIAMONDS, 123);
    String output = yaml.dump(map);
    assertEquals(
        "!!org.yaml.snakeyaml.Suit 'CLUBS': 0\n!!org.yaml.snakeyaml.Suit 'DIAMONDS': 123\n",
        output);
  }

  public void testDumpEnumBean() {
    DumperOptions options = new DumperOptions();
    options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
    Yaml yaml = new Yaml(options);
    EnumBean bean = new EnumBean();
    bean.setId(17);
    bean.setSuit(Suit.SPADES);
    LinkedHashMap<Suit, Integer> map = new LinkedHashMap<Suit, Integer>();
    map.put(Suit.CLUBS, 1);
    map.put(Suit.DIAMONDS, 2);
    bean.setMap(map);
    String output = yaml.dump(bean);
    assertEquals(
        "!!org.yaml.snakeyaml.EnumBean\nid: 17\nmap:\n  CLUBS: 1\n  DIAMONDS: 2\nsuit: SPADES\n",
        output);
  }

  // Loading
  public void testLoadEnum() {
    Yaml yaml = YamlCreator.allowClassPrefix("org");
    Suit suit = yaml.load("!!org.yaml.snakeyaml.Suit 'CLUBS'\n");
    assertEquals(Suit.CLUBS, suit);
  }

  public void testLoadOverridenToString() {
    Yaml yaml = YamlCreator.allowClassPrefix("org.yaml.snakeyaml");
    assertEquals(DumperOptions.FlowStyle.BLOCK,
        yaml.load("!!org.yaml.snakeyaml.DumperOptions$FlowStyle 'BLOCK'\n"));
  }

  @SuppressWarnings("unchecked")
  public void testLoadEnumList() {
    Yaml yaml = YamlCreator.allowClassPrefix("org");
    List<Suit> list = yaml.load(
        "- !!org.yaml.snakeyaml.Suit 'CLUBS'\n- !!org.yaml.snakeyaml.Suit 'DIAMONDS'\n- !!org.yaml.snakeyaml.Suit 'HEARTS'\n- !!org.yaml.snakeyaml.Suit 'SPADES'");
    assertEquals(4, list.size());
    assertEquals(Suit.CLUBS, list.get(0));
    assertEquals(Suit.DIAMONDS, list.get(1));
    assertEquals(Suit.HEARTS, list.get(2));
    assertEquals(Suit.SPADES, list.get(3));
  }

  @SuppressWarnings("unchecked")
  public void testLoadEnumMap() {
    Yaml yaml = YamlCreator.allowClassPrefix("org");
    Map<Integer, Suit> map =
        yaml.load("1: !!org.yaml.snakeyaml.Suit 'HEARTS'\n2: !!org.yaml.snakeyaml.Suit 'DIAMONDS'");
    assertEquals(2, map.size());
    assertEquals(Suit.HEARTS, map.get(1));
    assertEquals(Suit.DIAMONDS, map.get(2));
  }

  public void testLoadEnumBean() {
    Yaml yaml = YamlCreator.allowClassPrefix("org");
    EnumBean bean = yaml.load(
        "!!org.yaml.snakeyaml.EnumBean\nid: 174\nmap:\n  !!org.yaml.snakeyaml.Suit 'CLUBS': 1\n  !!org.yaml.snakeyaml.Suit 'DIAMONDS': 2\nsuit: CLUBS");

    LinkedHashMap<Suit, Integer> map = new LinkedHashMap<Suit, Integer>();
    map.put(Suit.CLUBS, 1);
    map.put(Suit.DIAMONDS, 2);

    assertEquals(Suit.CLUBS, bean.getSuit());
    assertEquals(174, bean.getId());
    assertEquals(map, bean.getMap());
  }

  public void testLoadEnumBean2() {
    Constructor c = new Constructor(YamlCreator.trustPrefixLoaderOptions("org.yaml.snakeyaml"));
    TypeDescription td = new TypeDescription(EnumBean.class);
    td.putMapPropertyType("map", Suit.class, Object.class);
    c.addTypeDescription(td);
    Yaml yaml = new Yaml(c);
    EnumBean bean = yaml.load(
        "!!org.yaml.snakeyaml.EnumBean\nid: 174\nmap:\n  CLUBS: 1\n  DIAMONDS: 2\nsuit: CLUBS");

    LinkedHashMap<Suit, Integer> map = new LinkedHashMap<Suit, Integer>();
    map.put(Suit.CLUBS, 1);
    map.put(Suit.DIAMONDS, 2);

    assertEquals(Suit.CLUBS, bean.getSuit());
    assertEquals(174, bean.getId());
    assertEquals(map, bean.getMap());
  }

  public void testLoadWrongEnum() {
    Yaml yaml = YamlCreator.allowClassPrefix("org");
    try {
      yaml.load("1: !!org.yaml.snakeyaml.Suit 'HEARTS'\n2: !!org.yaml.snakeyaml.Suit 'KOSYR'");
      fail("KOSYR is not Suit");
    } catch (Exception e) {
      assertTrue("KOSYR must be reported",
          e.getMessage().contains("Unable to find enum value 'KOSYR' for enum"));
    }
  }
}
