1 /**

     2  * 

     3  */

     4 package org.junit.experimental.theories.internal;

     5 

     6 import java.util.Arrays;

     7 import java.util.Collection;

     8 import java.util.Iterator;

     9 

    10 

    11 public class ParameterizedAssertionError extends RuntimeException {

    12 	private static final long serialVersionUID = 1L;

    13 

    14 	public ParameterizedAssertionError(Throwable targetException,

    15 			String methodName, Object... params) {

    16 		super(String.format("%s(%s)", methodName, join(", ", params)),

    17 				targetException);

    18 	}

    19 

    20 	@Override public boolean equals(Object obj) {

    21 		return toString().equals(obj.toString());

    22 	}

    23 

    24 	public static String join(String delimiter, Object... params) {

    25 		return join(delimiter, Arrays.asList(params));

    26 	}

    27 

    28 	public static String join(String delimiter,

    29 			Collection<Object> values) {

    30 		StringBuffer buffer = new StringBuffer();

    31 		Iterator<Object> iter = values.iterator();

    32 		while (iter.hasNext()) {

    33 			Object next = iter.next();

    34 			buffer.append(stringValueOf(next));

    35 			if (iter.hasNext()) {

    36 				buffer.append(delimiter);

    37 			}

    38 		}

    39 		return buffer.toString();

    40 	}

    41 

    42 	private static String stringValueOf(Object next) {

    43 		try {

    44 			return String.valueOf(next);

    45 		} catch (Throwable e) {

    46 			return "[toString failed]";

    47 		}

    48 	}

    49 }