1 files changed, 59 insertions, 0 deletions
diff --git a/src/main/java/org/junit/internal/ArrayComparisonFailure.java b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
new file mode 100644
index 0000000..08851de
--- /dev/null
+++ b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
@@ -0,0 +1,59 @@
+package org.junit.internal;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Assert;
+
+/**
+ * Thrown when two array elements differ
+ * @see Assert#assertArrayEquals(String, Object[], Object[])
+ */
+public class ArrayComparisonFailure extends AssertionError {
+
+	private static final long serialVersionUID= 1L;
+	
+	private List<Integer> fIndices= new ArrayList<Integer>();
+	private final String fMessage;
+	private final AssertionError fCause;
+
+	/**
+	 * Construct a new <code>ArrayComparisonFailure</code> with an error text and the array's
+	 * dimension that was not equal
+	 * @param cause the exception that caused the array's content to fail the assertion test 
+	 * @param index the array position of the objects that are not equal.
+	 * @see Assert#assertArrayEquals(String, Object[], Object[])
+	 */
+	public ArrayComparisonFailure(String message, AssertionError cause, int index) {
+		fMessage= message;
+		fCause= cause;
+		addDimension(index);
+	}
+
+	public void addDimension(int index) {
+		fIndices.add(0, index);
+	}
+
+	@Override
+	public String getMessage() {
+		StringBuilder builder= new StringBuilder();
+		if (fMessage != null)
+			builder.append(fMessage);
+		builder.append("arrays first differed at element ");
+		for (int each : fIndices) {
+			builder.append("[");
+			builder.append(each);
+			builder.append("]");
+		}
+		builder.append("; ");
+		builder.append(fCause.getMessage());
+		return builder.toString();
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override public String toString() {
+		return getMessage();
+	}
+}