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/*
 * $Header: /cvs/glassfish/admin-cli/cli-api/src/java/com/sun/cli/util/TokenizerTest.java,v 1.4 2007/05/05 05:25:00 tcfujii Exp $
 * $Revision: 1.4 $
 * $Date: 2007/05/05 05:25:00 $
 */
 
package com.sun.cli.util;

import java.util.Iterator;

import junit.framework.TestCase;



public class TokenizerTest extends TestCase
{
		public
	TokenizerTest( String name )
	{
		super( name );
	}
	
	public final static String	WHITE_SPACE	= " \t";
	public final static char	ESCAPE_CHAR	= '\\';
	public final static String	ESCAPABLE_CHARS	= "" + ESCAPE_CHAR + WHITE_SPACE + '\"';
	
		Tokenizer
	create( String input, boolean multipleDelimsCountAsOne )
	{
		return( new TokenizerImpl( input,
			WHITE_SPACE, multipleDelimsCountAsOne, ESCAPE_CHAR, ESCAPABLE_CHARS) );
	}
	
		Tokenizer
	create( String input )
	{
		return( new TokenizerImpl( input,
			WHITE_SPACE, false, ESCAPE_CHAR, ESCAPABLE_CHARS) );
	}
	

		public void
	testEmpty()
	{
		final Tokenizer tk	= create( "" );
		
		assertEquals( "expecting no tokens", 0, tk.getTokens().length );
		
		try
		{	
			tk.iterator().next();
			fail( "expecting exception trying to get token" );
		}
		catch( Exception e )
		{
		}
	}
	
	
		public void
	testLeadingDelim()
	{
		final String	input	= WHITE_SPACE.charAt( 0 ) + "hello";
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( 2, tokens.length );
	}
	
	
		public void
	testSingleDelimOnly()
	{
		final String	input	= "" + WHITE_SPACE.charAt( 0 );
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( 2, tokens.length );
	}
	
		public void
	testSingleToken()
	{
		final String	input	= "hello";
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( "expecting 1 token", 1, tokens.length );
		assertEquals( "expecting " + input, input, tokens[ 0 ] );
	}

		public void
	testMultipleTokens()
	{
		final String	input	= "hello there 1 2 3 4 5";
		final Iterator	iter	= create( input ).iterator();
		
		int		count	= 0;
		String	temp	= "";
		while ( iter.hasNext() )
		{
			++count;
			temp	= temp + " " + iter.next();
		}
		assertEquals( "expecting 7 tokens", 7, count );
		assertEquals( "expecting match", input, temp.substring( 1, temp.length() ));
	}
	
		public void
	testWhiteSpaceEquality()
	{
		final String	input1	= "hello there 1 2 3 4 5";
		final String	input2	= "hello\tthere 1\t2 3 4\t5";
		final Iterator	iter1	= create( input1 ).iterator();
		final Iterator	iter2	= create( input2 ).iterator();
		
		while ( iter1.hasNext() )
		{
			assertEquals( "expecting equal results from different white space",
				iter1.next(), iter2.next() );
		}
	}
	
	private final static char	BACKSLASH	= '\\';
	
	
		public void
	testEscapedNewlineCR()
	{
		final String	TEST	= "test" + BACKSLASH + "n" + BACKSLASH + "r";
		final String []	tokens	= create( TEST ).getTokens();
		
		assertEquals( 1, tokens.length );
		assertEquals( "test\n\r", tokens[ 0 ] );
	}
	
		public void
	testUnescapableChar()
	{
		final String	TEST	= "test" + BACKSLASH + "xyz";
		final String []	tokens	= create( TEST ).getTokens();
		
		assertEquals( 1, tokens.length );
		assertEquals( "test\\xyz", tokens[ 0 ] );
	}
	
		public void
	testEscaping()
	{
		// create a String which each escapable character is represented
		final StringBuffer	b	= new StringBuffer();
		for( int i = 0; i < ESCAPABLE_CHARS.length(); ++i )
		{
			b.append( "\\" + ESCAPABLE_CHARS.charAt( i ) );
		}
		final String []	tokens	= create( b.toString() ).getTokens();
		
		assertEquals( "expecting 1 token", 1, tokens.length );
		assertEquals( "expecting match", ESCAPABLE_CHARS, tokens[ 0 ] );
	}
	
	
		public void
	testTrailingDelimiter1()
	{
		final String	input	= "hello" + WHITE_SPACE.charAt( 0 );
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( 2, tokens.length );
	}
	
		public void
	testTrailingDelimiter2()
	{
		final String	input	= "hello" + WHITE_SPACE.charAt( 0 ) +
							"\"there\"" + WHITE_SPACE.charAt( 0 );
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( 3, tokens.length );
	}
	
		public void
	testMultipleDelimsWithNoData()
	{
		final String	input	= "" + WHITE_SPACE.charAt( 0 );
		final String []	tokens	= create( input, false ).getTokens();
		
		assertEquals( input.length() + 1, tokens.length );
	}
	
		public void
	testMultipleDelimsAsOne()
	{
		final String	input	= "hello" + WHITE_SPACE + "there" + WHITE_SPACE;
		final String []	tokens	= create( input, true ).getTokens();
		
		assertEquals( 3, tokens.length );
	}
	
		public void
	testQuotedString()
	{
		final String	input	= "\"hello there\" \"another\" \"3\" \"words\" \"\"";
		final String []	tokens	= create( input ).getTokens();
		
		assertEquals( 5, tokens.length );
		assertEquals( "hello there", tokens[ 0 ] );
		assertEquals( "another", tokens[ 1 ] );
		assertEquals( "3", tokens[ 2 ] );
		assertEquals( "words", tokens[ 3 ] );
		assertEquals( "", tokens[ 4 ] );
	}
	//-------------------------------------------------------------------------


	
		protected void
	setUp()
	{
	}
	
		protected void
	tearDown()
	{
	}
	
};