/*******************************************************************************
 * Copyright (c) 2000, 2010 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
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.text.tests;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.BadPositionCategoryException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.Position;


public class DocumentTest extends TestCase {

	private Document fDocument;


	public DocumentTest(String name) {
		super(name);
	}


	protected void checkPositions(Position[] expected) {

		try {

			Position[] actual= fDocument.getPositions(IDocument.DEFAULT_CATEGORY);
			checkPositions(expected, actual);

		} catch (BadPositionCategoryException x) {
			assertTrue("BadPositionCategoryException thrown", false);
		}

	}

	protected void checkPositions(Position[] expected, Position[] actual) {

		assertTrue("invalid number of positions", expected.length == actual.length);

		for (int i= 0; i < expected.length; i++) {
			assertEquals("Position " + i + " wrong:", expected[i], actual[i]);
		}

	}

	protected void setUp() {

		fDocument= new Document();

		String text=                          // 0
		"package TestPackage;\n" +            // 21
		"/*\n" +                              // 24
		"* comment\n" +                       // 34
		"*/\n" +                              // 37
		"	public class Class {\n" +         // 59 
		"		// comment1\n" +              // 73
		"		public void method1() {\n" +  // 99
		"		}\n" +                        //103
		"		// comment2\n" +              //117
		"		public void method2() {\n" +  //143
		"		}\n" +                        //147
		"	}\n";                             //150

		fDocument.set(text);

		try {

			fDocument.addPosition(new Position( 0,   20)); // "package TestPackage;"
			fDocument.addPosition(new Position( 21,  15)); // "/*\n* comment\n*/"
			fDocument.addPosition(new Position( 38, 111)); // "public class Class {\n ... }"
			fDocument.addPosition(new Position( 61,  12)); // "// comment1\n"
			fDocument.addPosition(new Position( 75,  27)); // "public void method1() {\n		}"
			fDocument.addPosition(new Position(105,  12)); // "// comment2\n"
			fDocument.addPosition(new Position(119,  27)); // "public void method2() {\n		}"

		} catch (BadLocationException x) {
			assertTrue("initilization failed", false);
		}
	}

	public static Test suite() {
		return new TestSuite(DocumentTest.class);
	}

	protected void tearDown () {
		fDocument= null;
	}


	public void testEmptyDocument() {
		IDocument document= new Document();
		int lines= document.getNumberOfLines();
		assertEquals(1, lines);
	}
	
	public void testDelete1() {

		try {

			fDocument.replace(21, 16, "");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   20),
			new Position( 21,  0),
			new Position( 22, 111),
			new Position( 45,  12),
			new Position( 59,  27),
			new Position( 89,  12),
			new Position(103,  27)
		};

		checkPositions(positions);
	}

	public void testEditScript1() {

		//	1. step

		try {

			fDocument.replace(0, fDocument.getLength(), "");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0, 0)
		};

		checkPositions(positions);


		//	2. step
		try {

			fDocument.replace(0, 0, "\t");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		positions= new Position[] {
			new Position( 1, 0)
		};

		checkPositions(positions);

	}

	public void testFindPositions() {

		try {

			fDocument.addPosition(new Position( 21,  13));
			fDocument.addPosition(new Position(  0,  19));
			fDocument.addPosition(new Position( 21,  14));
			fDocument.addPosition(new Position( 21,  16));
			fDocument.addPosition(new Position(  0,   0));
			fDocument.addPosition(new Position( 104,  1));
			fDocument.addPosition(new Position( 120,  1));
			fDocument.addPosition(new Position( 119,  1));

		} catch (BadLocationException x) {
			assertTrue("initilization failed", false);
		}


		Position[] positions= new Position[] {
			new Position( 0,    0),
			new Position( 0,   19),
			new Position( 0,   20),
			new Position( 21,  16),
			new Position( 21,  14),
			new Position( 21,  13),
			new Position( 21,  15),
			new Position( 38, 111),
			new Position( 61,  12),
			new Position( 75,  27),
			new Position(104,   1),
			new Position(105,  12),
			new Position(119,   1),
			new Position(119,  27),
			new Position(120,   1)
		};

		checkPositions(positions);

	}

	public void testInsert1() {

		try {

			fDocument.replace(0, 0, "//comment\n");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 10,   20),
			new Position( 31,  15),
			new Position( 48, 111),
			new Position( 71,  12),
			new Position( 85,  27),
			new Position(115,  12),
			new Position(129,  27)
		};

		checkPositions(positions);
	}

	public void testInsert2() {

		try {

			fDocument.replace(61, 0, "//comment\n");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   20),
			new Position( 21,  15),
			new Position( 38, 121),
			new Position( 71,  12),
			new Position( 85,  27),
			new Position(115,  12),
			new Position(129,  27)
		};

		checkPositions(positions);
	}

	public void testInsert3() {

		try {

			fDocument.replace(101, 0, "//comment\n");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   20),
			new Position( 21,  15),
			new Position( 38, 121),
			new Position( 61,  12),
			new Position( 75,  37),
			new Position(115,  12),
			new Position(129,  27)
		};

		checkPositions(positions);
	}

	public void testInsert4() {

		try {

			fDocument.replace(20, 0, "// comment");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		System.out.print(fDocument.get());

		Position[] positions= new Position[] {
			new Position( 0,   20),
			new Position( 31,  15),
			new Position( 48, 111),
			new Position( 71,  12),
			new Position( 85,  27),
			new Position(115,  12),
			new Position(129,  27)
		};

		checkPositions(positions);
	}

	public void testReplace1() {

		try {

			fDocument.replace(8, 11, "pkg1");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   13),
			new Position( 14,  15),
			new Position( 31, 111),
			new Position( 54,  12),
			new Position( 68,  27),
			new Position( 98,  12),
			new Position(112,  27)
		};

		checkPositions(positions);
	}

	public void testReplace2() {

		try {

			fDocument.replace(21, 16, "//comment\n");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   20),
			new Position( 31,   0),
			new Position( 32, 111),
			new Position( 55,  12),
			new Position( 69,  27),
			new Position( 99,  12),
			new Position(113,  27)
		};

		checkPositions(positions);
	}

	public void testReplace3() {

		Position[] actual= new Position[] {
			new Position(0, 150),
		};

		try {

			fDocument.addPosition(actual[0]);
			fDocument.replace(0, 150, "xxxxxxxxxx");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] expected= new Position[] {
			new Position(0, 10)
		};

		checkPositions(expected, actual);
	}

	public void testReplace4() {

		try {

			fDocument.replace(19, 1, "xxxxx;");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position( 0,   25),
			new Position( 26,  15),
			new Position( 43, 111),
			new Position( 66,  12),
			new Position( 80,  27),
			new Position(110,  12),
			new Position(124,  27)
		};

		checkPositions(positions);
	}

	public void testAppend() {

		Position[] actual= new Position[] {
			new Position(0, 2),
		};

		try {

			fDocument.replace(0, 150, "");
			fDocument.replace(fDocument.getLength(), 0, "xx");
			fDocument.addPosition(actual[0]);
			fDocument.replace(fDocument.getLength(), 0, "xxxxxxxx");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] expected= new Position[] {
			new Position(0, 2)
		};

		checkPositions(expected, actual);
	}


	public void testShiftLeft() {

		try {

			fDocument.replace(73, 1, "");
			fDocument.replace(98, 1, "");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position(  0,  20),
			new Position( 21,  15),
			new Position( 38, 109),
			new Position( 61,  12),
			new Position( 74,  26),
			new Position(103,  12),
			new Position(117,  27)
		};

		checkPositions(positions);
	}

	public void testShiftRight() {

		try {

			fDocument.replace( 73, 0, "\t");
			fDocument.replace(100, 0, "\t");

		} catch (BadLocationException x) {
			assertTrue("BadLocationException thrown", false);
		}

		Position[] positions= new Position[] {
			new Position(  0,  20),
			new Position( 21,  15),
			new Position( 38, 113),
			new Position( 61,  12),
			new Position( 76,  28),
			new Position(107,  12),
			new Position(121,  27)
		};

		checkPositions(positions);
	}
}