ParameterizedAssertionError.java :  » IDE » IntelliJ » org » junit » experimental » theories » internal » Java Open Source

/**
 * 
 */
package org.junit.experimental.theories.internal;

import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;


public class ParameterizedAssertionError extends RuntimeException {
  private static final long serialVersionUID = 1L;

  public ParameterizedAssertionError(Throwable targetException,
      String methodName, Object... params) {
    super(String.format("%s(%s)", methodName, join(", ", params)),
        targetException);
  }

  @Override public boolean equals(Object obj) {
    return toString().equals(obj.toString());
  }

  public static String join(String delimiter, Object... params) {
    return join(delimiter, Arrays.asList(params));
  }

  public static String join(String delimiter,
      Collection<Object> values) {
    StringBuffer buffer = new StringBuffer();
    Iterator<Object> iter = values.iterator();
    while (iter.hasNext()) {
      Object next = iter.next();
      buffer.append(stringValueOf(next));
      if (iter.hasNext()) {
        buffer.append(delimiter);
      }
    }
    return buffer.toString();
  }

  private static String stringValueOf(Object next) {
    try {
      return String.valueOf(next);
    } catch (Throwable e) {
      return "[toString failed]";
    }
  }
}