/* Created on Jan 19, 2004 */
package com.quantum.util;

import java.lang.reflect.Method;

import junit.framework.TestCase;

/**
 * @author holmesbc
 */
public class StringUtilTest extends TestCase {
	public void testSubstituteString() throws Exception {
		
		String sample = "This is a test of ${variable} substitution.";
		String replaceAll = replaceAll(sample, "\\$\\{variable\\}", "parameter");
		
		assertEquals("replaceAll", "This is a test of parameter substitution.", replaceAll);
		System.out.println(StringUtil.substituteString(sample, "${variable}", "parameter"));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "${variable}", "parameter"));
	}

	public void testSubstituteStringAtEnd() throws Exception {
		
		String sample = "Substitute ${variable}";
		String replaceAll = replaceAll(sample, "\\$\\{variable\\}", "parameter");
		
		System.out.println(StringUtil.substituteString(sample, "${variable}", "parameter"));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "${variable}", "parameter"));
	}

	public void testSubstituteStringAtBeginning() throws Exception  {
		
		String sample = "${variable} substitution";
		String replaceAll = replaceAll(sample, "\\$\\{variable\\}", "parameter");
		
		System.out.println(StringUtil.substituteString(sample, "${variable}", "parameter"));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "${variable}", "parameter"));
	}

	public void testSubstituteStringMultipleTokens() throws Exception  {
		
		String sample = "${variable}${variable}";
		String replaceAll = replaceAll(sample, "\\$\\{variable\\}", "parameter");
		
		System.out.println(StringUtil.substituteString(sample, "${variable}", "parameter"));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "${variable}", "parameter"));
	}

	public void testSubstituteStringZeroLength() throws Exception  {
		
		String sample = "This is a test of ${variable} substitution.";
		String replaceAll = replaceAll(sample, "\\$\\{variable\\}", "");
		
		System.out.println(StringUtil.substituteString(sample, "${variable}", ""));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "${variable}", ""));
	}

	public void testSubstituteStringSpecialChars() throws Exception  {
		
		String sample = "This is a test of \r substitution.";
		String replaceAll = replaceAll(sample, "\r", "");
		
		System.out.println(StringUtil.substituteString(sample, "\r", ""));		
		assertEquals("substitute String", replaceAll, StringUtil.substituteString(sample, "\r", ""));
	}
	
	private String replaceAll(String original, String regex, String newValue) throws Exception {
		Method method = String.class.getMethod("replaceAll", new Class[] { String.class, String.class } );
		return (String) method.invoke(original, new Object[] { regex, newValue } );
	}
}