1 package org.junit.internal;

     2 

     3 import java.util.ArrayList;

     4 import java.util.List;

     5 

     6 import org.junit.Assert;

     7 

     8 /**

     9  * Thrown when two array elements differ

    10  * @see Assert#assertEquals(String, Object[], Object[])

    11  */

    12 public class ArrayComparisonFailure extends AssertionError {

    13 

    14 	private static final long serialVersionUID= 1L;

    15 	

    16 	private List<Integer> fIndices= new ArrayList<Integer>();

    17 	private final String fMessage;

    18 	private final AssertionError fCause;

    19 

    20 	/**

    21 	 * Construct a new <code>ArrayComparisonFailure</code> with an error text and the array's

    22 	 * dimension that was not equal

    23 	 * @param cause the exception that caused the array's content to fail the assertion test 

    24 	 * @param index the array position of the objects that are not equal.

    25 	 * @see Assert#assertEquals(String, Object[], Object[])

    26 	 */

    27 	public ArrayComparisonFailure(String message, AssertionError cause, int index) {

    28 		fMessage= message;

    29 		fCause= cause;

    30 		addDimension(index);

    31 	}

    32 

    33 	public void addDimension(int index) {

    34 		fIndices.add(0, index);

    35 	}

    36 

    37 	@Override

    38 	public String getMessage() {

    39 		StringBuilder builder= new StringBuilder();

    40 		if (fMessage != null)

    41 			builder.append(fMessage);

    42 		builder.append("arrays first differed at element ");

    43 		for (int each : fIndices) {

    44 			builder.append("[");

    45 			builder.append(each);

    46 			builder.append("]");

    47 		}

    48 		builder.append("; ");

    49 		builder.append(fCause.getMessage());

    50 		return builder.toString();

    51 	}

    52 	

    53 	/**

    54 	 * {@inheritDoc}

    55 	 */

    56 	@Override public String toString() {

    57 		return getMessage();

    58 	}

    59 }