//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   // This file is copied from JUnit with no modification.
   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   package junit.framework;
   
   /**
    * A set of assert methods.  Messages are only displayed when an assert fails.
    */
   
  public class Assert {
  	/**
  	 * Protect constructor since it is a static only class
  	 */
  	protected Assert() {
  	}
  
  	/**
  	 * Asserts that a condition is true. If it isn't it throws
  	 * an AssertionFailedError with the given message.
  	 */
  	static public void assertTrue(String message, boolean condition) {
  		if (!condition)
  			fail(message);
  	}
  	/**
  	 * Asserts that a condition is true. If it isn't it throws
  	 * an AssertionFailedError.
  	 */
  	static public void assertTrue(boolean condition) {
  		assertTrue(null, condition);
  	}
  	/**
  	 * Asserts that a condition is false. If it isn't it throws
  	 * an AssertionFailedError with the given message.
  	 */
  	static public void assertFalse(String message, boolean condition) {
  		assertTrue(message, !condition);
  	}
  	/**
  	 * Asserts that a condition is false. If it isn't it throws
  	 * an AssertionFailedError.
  	 */
  	static public void assertFalse(boolean condition) {
  		assertFalse(null, condition);
  	}
  	/**
  	 * Fails a test with the given message.
  	 */
  	static public void fail(String message) {
  		throw new AssertionFailedError(message);
  	}
  	/**
  	 * Fails a test with no message.
  	 */
  	static public void fail() {
  		fail(null);
  	}
  	/**
  	 * Asserts that two objects are equal. If they are not
  	 * an AssertionFailedError is thrown with the given message.
  	 */
  	static public void assertEquals(String message, Object expected, Object actual) {
  		if (expected == null && actual == null)
  			return;
  		if (expected != null && expected.equals(actual))
  			return;
  		failNotEquals(message, expected, actual);
  	}
  	/**
  	 * Asserts that two objects are equal. If they are not
  	 * an AssertionFailedError is thrown.
  	 */
  	static public void assertEquals(Object expected, Object actual) {
  	    assertEquals(null, expected, actual);
  	}
  	/**
  	 * Asserts that two Strings are equal. 
  	 */
  	static public void assertEquals(String message, String expected, String actual) {
  		if (expected == null && actual == null)
  			return;
  		if (expected != null && expected.equals(actual))
  			return;
  		throw new ComparisonFailure(message, expected, actual);
  	}
  	/**
  	 * Asserts that two Strings are equal. 
  	 */
  	static public void assertEquals(String expected, String actual) {
  	    assertEquals(null, expected, actual);
  	}
  	/**
  	 * Asserts that two doubles are equal concerning a delta.  If they are not
  	 * an AssertionFailedError is thrown with the given message.  If the expected
  	 * value is infinity then the delta value is ignored.
  	 */
  	static public void assertEquals(String message, double expected, double actual, double delta) {
  		// handle infinity specially since subtracting to infinite values gives NaN and the
  		// the following test fails
 		if (Double.isInfinite(expected)) {
 			if (!(expected == actual))
 				failNotEquals(message, new Double(expected), new Double(actual));
 		} else if (!(Math.abs(expected-actual) <= delta)) // Because comparison with NaN always returns false
 			failNotEquals(message, new Double(expected), new Double(actual));
 	}
 	/**
 	 * Asserts that two doubles are equal concerning a delta. If the expected
 	 * value is infinity then the delta value is ignored.
 	 */
 	static public void assertEquals(double expected, double actual, double delta) {
 	    assertEquals(null, expected, actual, delta);
 	}
 	/**
 	 * Asserts that two floats are equal concerning a delta. If they are not
 	 * an AssertionFailedError is thrown with the given message.  If the expected
 	 * value is infinity then the delta value is ignored.
 	 */
 	static public void assertEquals(String message, float expected, float actual, float delta) {
  		// handle infinity specially since subtracting to infinite values gives NaN and the
 		// the following test fails
 		if (Float.isInfinite(expected)) {
 			if (!(expected == actual))
 				failNotEquals(message, new Float(expected), new Float(actual));
 		} else if (!(Math.abs(expected-actual) <= delta))
       		failNotEquals(message, new Float(expected), new Float(actual));
 	}
 	/**
 	 * Asserts that two floats are equal concerning a delta. If the expected
 	 * value is infinity then the delta value is ignored.
 	 */
 	static public void assertEquals(float expected, float actual, float delta) {
 		assertEquals(null, expected, actual, delta);
 	}
 	/**
 	 * Asserts that two longs are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertEquals(String message, long expected, long actual) {
 	    assertEquals(message, new Long(expected), new Long(actual));
 	}
 	/**
 	 * Asserts that two longs are equal.
 	 */
 	static public void assertEquals(long expected, long actual) {
 	    assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that two booleans are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertEquals(String message, boolean expected, boolean actual) {
     		assertEquals(message, new Boolean(expected), new Boolean(actual));
   	}
 	/**
 	 * Asserts that two booleans are equal.
  	 */
 	static public void assertEquals(boolean expected, boolean actual) {
 		assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that two bytes are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
   	static public void assertEquals(String message, byte expected, byte actual) {
 		assertEquals(message, new Byte(expected), new Byte(actual));
 	}
 	/**
    	 * Asserts that two bytes are equal.
 	 */
 	static public void assertEquals(byte expected, byte actual) {
 		assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that two chars are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
   	static public void assertEquals(String message, char expected, char actual) {
     		assertEquals(message, new Character(expected), new Character(actual));
   	}
 	/**
 	 * Asserts that two chars are equal.
 	 */
   	static public void assertEquals(char expected, char actual) {
 		assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that two shorts are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertEquals(String message, short expected, short actual) {
     		assertEquals(message, new Short(expected), new Short(actual));
 	}
   	/**
 	 * Asserts that two shorts are equal.
 	 */
 	static public void assertEquals(short expected, short actual) {
 		assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that two ints are equal. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
   	static public void assertEquals(String message, int expected, int actual) {
 		assertEquals(message, new Integer(expected), new Integer(actual));
   	}
   	/**
    	 * Asserts that two ints are equal.
 	 */
   	static public void assertEquals(int expected, int actual) {
   		assertEquals(null, expected, actual);
 	}
 	/**
 	 * Asserts that an object isn't null.
 	 */
 	static public void assertNotNull(Object object) {
 		assertNotNull(null, object);
 	}
 	/**
 	 * Asserts that an object isn't null. If it is
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertNotNull(String message, Object object) {
 		assertTrue(message, object != null);
 	}
 	/**
 	 * Asserts that an object is null.
 	 */
 	static public void assertNull(Object object) {
 		assertNull(null, object);
 	}
 	/**
 	 * Asserts that an object is null.  If it is not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertNull(String message, Object object) {
 		assertTrue(message, object == null);
 	}
 	/**
 	 * Asserts that two objects refer to the same object. If they are not
 	 * an AssertionFailedError is thrown with the given message.
 	 */
 	static public void assertSame(String message, Object expected, Object actual) {
 		if (expected == actual)
 			return;
 		failNotSame(message, expected, actual);
 	}
 	/**
 	 * Asserts that two objects refer to the same object. If they are not
 	 * the same an AssertionFailedError is thrown.
 	 */
 	static public void assertSame(Object expected, Object actual) {
 	    assertSame(null, expected, actual);
 	}
  	/**
  	 * Asserts that two objects refer to the same object. If they are not
  	 * an AssertionFailedError is thrown with the given message.
  	 */
 	static public void assertNotSame(String message, Object expected, Object actual) {
 		if (expected == actual)
 			failSame(message);
 	}
 	/**
 	 * Asserts that two objects refer to the same object. If they are not
 	 * the same an AssertionFailedError is thrown.
 	 */
 	static public void assertNotSame(Object expected, Object actual) {
 		assertNotSame(null, expected, actual);
 	}
 
 	static private void failSame(String message) {
 		String formatted= "";
  		if (message != null)
  			formatted= message+" ";
  		fail(formatted+"expected not same");
 	}
 
 	static private void failNotSame(String message, Object expected, Object actual) {
 		String formatted= "";
 		if (message != null)
 			formatted= message+" ";
 		fail(formatted+"expected same:<"+expected+"> was not:<"+actual+">");
 	}
 
 	static private void failNotEquals(String message, Object expected, Object actual) {
 		fail(format(message, expected, actual));
 	}
 
 	static String format(String message, Object expected, Object actual) {
 		String formatted= "";
 		if (message != null)
 			formatted= message+" ";
 		return formatted+"expected:<"+expected+"> but was:<"+actual+">";
 	}
 }