ComparisonFailure


1   package junit.framework;
2   
3   /**
4    * Thrown when an assert equals for Strings failed.
5    * 
6    * Inspired by a patch from Alex Chaffee mailto:alex@purpletech.com
7    */
8   public class ComparisonFailure extends AssertionFailedError {
9       private static final int MAX_CONTEXT_LENGTH= 20;
10      private static final long serialVersionUID= 1L;
11      
12      private String   fExpected;
13      private String   fActual;
14  
15      /**
16       * Constructs a comparison failure.
17       * @param message the identifying message or null
18       * @param expected the expected string value
19       * @param actual the actual string value
20       */
21      public ComparisonFailure (String   message, String   expected, String   actual) {
22          super (message);
23          fExpected= expected;
24          fActual= actual;
25      }
26      
27      /**
28       * Returns "..." in place of common prefix and "..." in
29       * place of common suffix between expected and actual.
30       * 
31       * @see Throwable#getMessage()
32       */
33      @Override  
34      public String   getMessage() {
35          return new ComparisonCompactor(MAX_CONTEXT_LENGTH, fExpected, fActual).compact(super.getMessage());
36      }
37      
38      /**
39       * Gets the actual string value
40       * @return the actual string value
41       */
42      public String   getActual() {
43          return fActual;
44      }
45      /**
46       * Gets the expected string value
47       * @return the expected string value
48       */
49      public String   getExpected() {
50          return fExpected;
51      }
52  }
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