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 (at) 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 java.lang.Throwable#getMessage() 32 */ 33 public String getMessage() { 34 return new ComparisonCompactor(MAX_CONTEXT_LENGTH, fExpected, fActual).compact(super.getMessage()); 35 } 36 37 /** 38 * Gets the actual string value 39 * @return the actual string value 40 */ 41 public String getActual() { 42 return fActual; 43 } 44 /** 45 * Gets the expected string value 46 * @return the expected string value 47 */ 48 public String getExpected() { 49 return fExpected; 50 } 51 }
