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1   /**
2    * Copyright (c) 2008-2011, http://www.snakeyaml.org
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.yaml.snakeyaml.scanner;
18  
19  import java.io.IOException;
20  import java.util.LinkedList;
21  
22  import junit.framework.TestCase;
23  
24  import org.yaml.snakeyaml.Yaml;
25  import org.yaml.snakeyaml.error.Mark;
26  import org.yaml.snakeyaml.reader.StreamReader;
27  import org.yaml.snakeyaml.tokens.BlockEndToken;
28  import org.yaml.snakeyaml.tokens.BlockMappingStartToken;
29  import org.yaml.snakeyaml.tokens.KeyToken;
30  import org.yaml.snakeyaml.tokens.ScalarToken;
31  import org.yaml.snakeyaml.tokens.StreamEndToken;
32  import org.yaml.snakeyaml.tokens.StreamStartToken;
33  import org.yaml.snakeyaml.tokens.Token;
34  import org.yaml.snakeyaml.tokens.ValueToken;
35  
36  public class ScannerImplTest extends TestCase {
37  
38      public void testGetToken() {
39          String data = "string: abcd";
40          StreamReader reader = new StreamReader(data);
41          Scanner scanner = new ScannerImpl(reader);
42          Mark dummy = new Mark("dummy", 0, 0, 0, "", 0);
43          LinkedList<Token> etalonTokens = new LinkedList<Token>();
44          etalonTokens.add(new StreamStartToken(dummy, dummy));
45          etalonTokens.add(new BlockMappingStartToken(dummy, dummy));
46          etalonTokens.add(new KeyToken(dummy, dummy));
47          etalonTokens.add(new ScalarToken("string", true, dummy, dummy, (char) 0));
48          etalonTokens.add(new ValueToken(dummy, dummy));
49          etalonTokens.add(new ScalarToken("abcd", true, dummy, dummy, (char) 0));
50          etalonTokens.add(new BlockEndToken(dummy, dummy));
51          etalonTokens.add(new StreamEndToken(dummy, dummy));
52          while (!etalonTokens.isEmpty() && scanner.checkToken(etalonTokens.get(0).getTokenId())) {
53              assertEquals(etalonTokens.removeFirst(), scanner.getToken());
54          }
55          assertFalse("Must contain no more tokens: " + scanner.getToken(),
56                  scanner.checkToken(new Token.ID[0]));
57      }
58  
59      public void testWrongTab() throws IOException {
60          Yaml yaml = new Yaml();
61          try {
62              yaml.load("\t  data: 1");
63              fail("TAB cannot start a token.");
64          } catch (Exception e) {
65              assertEquals(
66                      "while scanning for the next token; found character \t'\\t' that cannot start any token",
67                      e.getMessage());
68          }
69      }
70  }