/*******************************************************************************
 * @license
 * Copyright (c) 2010, 2011 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials are made 
 * available under the terms of the Eclipse Public License v1.0 
 * (http://www.eclipse.org/legal/epl-v10.html), and the Eclipse Distribution 
 * License v1.0 (http://www.eclipse.org/org/documents/edl-v10.html). 
 * 
 * Contributors: IBM Corporation - initial API and implementation
 ******************************************************************************/

/*global define */

define(["orion/assert", 'orion/textview/textModel', 'orion/textview/annotations'], function(assert, mTextModel) {

	var tests = {};
	
	function assertEquals(msg, expected, actual) {
		assert.equal(actual, expected, msg);
	}
	
	tests.testEmptyTextModel = function() {
		var content = new mTextModel.TextModel();
		assertEquals(":1a:", content.getLineCount(), 1);
		assertEquals(":1b:", content.getLine(0), "");

		content.setText("test");
		content.setText("", 0, 4);
		assertEquals(":2a:", content.getLineCount(), 1);
		assertEquals(":2b:", content.getLine(0), "");
	};
	
	tests.testInsertTextModel = function() {
		var content = new mTextModel.TextModel();
		var newText;
		
		content.setText("This\nis a test\r");
		content.setText("test\n ", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":1a:", ("test\n This\nis a test\r"), newText);
		assertEquals(":1b:", 4, content.getLineCount());
		assertEquals(":1c:", ("test"), content.getLine(0));
		assertEquals(":1d:", (" This"), content.getLine(1));
		assertEquals(":1e:", ("is a test"), content.getLine(2));
		assertEquals(":1f:", (""), content.getLine(3));

		content.setText("This\nis a test\r");
		content.setText("*** ", 5, 5);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":2a:", ("This\n*** is a test\r"), newText);
		assertEquals(":2b:", 3, content.getLineCount());
		assertEquals(":2c:", ("This"), content.getLine(0));
		assertEquals(":2d:", ("*** is a test"), content.getLine(1));
		assertEquals(":2e:", (""), content.getLine(2));

		content.setText("Line 1\r\nLine 2");
		content.setText("\r", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":3a:", ("\rLine 1\r\nLine 2"), newText);
		assertEquals(":3b:", 3, content.getLineCount());
		assertEquals(":3c:", (""), content.getLine(0));
		assertEquals(":3d:", ("Line 1"), content.getLine(1));
		assertEquals(":3e:", ("Line 2"), content.getLine(2));
		content.setText("\r", 9, 9);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":3f:", ("\rLine 1\r\n\rLine 2"), newText);
		assertEquals(":3g:", 4, content.getLineCount());
		assertEquals(":3h:", (""), content.getLine(0));
		assertEquals(":3i:", ("Line 1"), content.getLine(1));
		assertEquals(":3j:", (""), content.getLine(2));
		assertEquals(":3k:", ("Line 2"), content.getLine(3));

		content.setText("This\nis a test\r");
		content.setText("\n", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":4a:", ("\nThis\nis a test\r"), newText);
		assertEquals(":4b:", 4, content.getLineCount());
		assertEquals(":4c:", (""), content.getLine(0));
		assertEquals(":4d:", ("This"), content.getLine(1));
		assertEquals(":4e:", ("is a test"), content.getLine(2));
		assertEquals(":4f:", (""), content.getLine(3));
		
		content.setText("This\nis a test\r");
		content.setText("\r\nnewLine", 7, 7);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":5a:", ("This\nis\r\nnewLine a test\r"), newText);
		assertEquals(":5b:", 4, content.getLineCount());
		assertEquals(":5c:", ("This"), content.getLine(0));
		assertEquals(":5d:", ("is"), content.getLine(1));
		assertEquals(":5e:", ("newLine a test"), content.getLine(2));
		assertEquals(":5f:", (""), content.getLine(3));

		content.setText("");
		content.setText("This\nis\r\nnewLine a test\r", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":6a:", ("This\nis\r\nnewLine a test\r"), newText);
		assertEquals(":6b:", 4, content.getLineCount());
		assertEquals(":6c:", ("This"), content.getLine(0));
		assertEquals(":6d:", ("is"), content.getLine(1));
		assertEquals(":6e:", ("newLine a test"), content.getLine(2));
		assertEquals(":6f:", (""), content.getLine(3));

		// insert at end
		content.setText("This");
		content.setText("\n ", 4, 4);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":7a:", ("This\n "), newText);
		assertEquals(":7b:", 2, content.getLineCount());
		assertEquals(":7c:", ("This"), content.getLine(0));
		assertEquals(":7d:", (" "), content.getLine(1));
		content.setText("This\n");
		content.setText("\n", 5, 5);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":7e:", ("This\n\n"), newText);
		assertEquals(":7f:", 3, content.getLineCount());
		assertEquals(":7g:", ("This"), content.getLine(0));
		assertEquals(":7h:", (""), content.getLine(1));
		assertEquals(":7i:", (""), content.getLine(2));

		// insert at beginning
		content.setText("This");
		content.setText("\n", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":8a:", ("\nThis"), newText);
		assertEquals(":8b:", 2, content.getLineCount());
		assertEquals(":8c:", (""), content.getLine(0));
		assertEquals(":8d:", ("This"), content.getLine(1));

		//insert at end
		content.setText("This");
		content.setText("\n", 4, 4);//passing 5, 5 runs into problem (text model doesn't not check range and fails)
		newText = content.getText(0, content.getCharCount());
		assertEquals(":8e:", "This\n", newText);
		//Note: This is different than StyledText, web editor always break line on \r \n \r\n, it uses lineDelimiter for enter key
		assertEquals(":8f:", 2, content.getLineCount());
		
		// insert text
		content.setText("This\nis a test\r");
		content.setText("*** ", 5, 5);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":9a:", newText, ("This\n*** is a test\r"));
		assertEquals(":9b:", 3, content.getLineCount());
		assertEquals(":9c:", ("This"), content.getLine(0));
		assertEquals(":9d:", ("*** is a test"), content.getLine(1));
		assertEquals(":9e:", (""), content.getLine(2));
		
		content.setText("This\n");
		content.setText("line", 5, 5);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":10a:", "This\nline", newText);
		assertEquals(":10b:", 2, content.getLineCount());
		assertEquals(":10c:", "This", content.getLine(0));
		assertEquals(":10d:", "line", content.getLine(1));
		assertEquals(":10e:", 1, content.getLineAtOffset(8));
		assertEquals(":10f:", 1, content.getLineAtOffset(9));

		// insert at beginning 
		content.setText("This\n");
		content.setText("line\n", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":11a:", ("line\nThis\n"), newText);
		assertEquals(":11b:", 3, content.getLineCount());
		assertEquals(":11c:", ("line"), content.getLine(0));
		assertEquals(":11d:", ("This"), content.getLine(1));
		assertEquals(":11e:", 1, content.getLineAtOffset(5));

		content.setText("Line 1\r\nLine 2\r\nLine 3");
		content.setText("\r", 0, 0);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":12a:", ("\rLine 1\r\nLine 2\r\nLine 3"), newText);
		assertEquals(":12b:", 4, content.getLineCount());
		assertEquals(":12c:", (""), content.getLine(0));
		assertEquals(":12d:", ("Line 1"), content.getLine(1));
		assertEquals(":12e:", ("Line 2"), content.getLine(2));
		assertEquals(":12f:", ("Line 3"), content.getLine(3));

		content.setText("Line 1\nLine 2\nLine 3");
		content.setText("Line1a\nLine1b\n", 7, 7);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":13a:", ("Line 1\nLine1a\nLine1b\nLine 2\nLine 3"), newText);
		assertEquals(":13b:", 5, content.getLineCount());
		assertEquals(":13c:", ("Line 1"), content.getLine(0));
		assertEquals(":13d:", ("Line1a"), content.getLine(1));
		assertEquals(":13e:", ("Line1b"), content.getLine(2));
		assertEquals(":13f:", ("Line 2"), content.getLine(3));
		assertEquals(":13g:", ("Line 3"), content.getLine(4));

		content.setText("Line 1\nLine 2\nLine 3");
		content.setText("l1a", 11, 11);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":14a:", ("Line 1\nLinel1a 2\nLine 3"), newText);
		assertEquals(":14b:", 3, content.getLineCount());
		assertEquals(":14c:", ("Line 1"), content.getLine(0));
		assertEquals(":14d:", ("Linel1a 2"), content.getLine(1));
		assertEquals(":14e:", ("Line 3"), content.getLine(2));

		content.setText("Line 1\nLine 2 is a very long line that spans many words\nLine 3");
		content.setText("very, very, ", 19, 19);
		newText = content.getText(0, content.getCharCount());
		assertEquals(":15a:", ("Line 1\nLine 2 is a very, very, very long line that spans many words\nLine 3"), newText);
		assertEquals(":15b:", 3, content.getLineCount());
		assertEquals(":15c:", ("Line 1"), content.getLine(0));
		assertEquals(":15d:", ("Line 2 is a very, very, very long line that spans many words"), content.getLine(1));
		assertEquals(":15e:", ("Line 3"), content.getLine(2));
	};

	return tests;		
});

