/*!
 * VisualEditor UserInterface Actions IndentationAction tests.
 *
 * @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
 * @license The MIT License (MIT); see LICENSE.txt
 */

QUnit.module( 've.ui.IndentationAction' );

/* Tests */

function runIndentationChangeTest( assert, range, method, expectedSelection, expectedData, expectedOriginalData, msg ) {
	var selection,
		dom = ve.createDocumentFromHTML( ve.dm.example.isolationHTML ),
		target = new ve.init.sa.Target( $( '#qunit-fixture' ), dom ),
		surface = target.surface,
		indentationAction = new ve.ui.IndentationAction( surface ),
		data = ve.copyArray( surface.getModel().getDocument().getFullData() ),
		originalData = ve.copyArray( data );

	expectedData( data );
	if ( expectedOriginalData ) {
		expectedOriginalData( originalData );
	}

	surface.getModel().change( null, range );
	indentationAction[method]();

	assert.deepEqual( surface.getModel().getDocument().getFullData(), data, msg + ': data models match' );
	assert.deepEqual( surface.getModel().getSelection(), expectedSelection, msg + ': selections match' );

	selection = surface.getModel().undo();

	assert.deepEqual( surface.getModel().getDocument().getFullData(), originalData, msg + ' (undo): data models match' );
	assert.deepEqual( selection, range, msg + ' (undo): selections match' );

	surface.destroy();
}

QUnit.test( 'increase/decrease', 2, function ( assert ) {
	var i,
		cases = [
			{
				'range': new ve.Range( 14, 16 ),
				'method': 'decrease',
				'expectedSelection': new ve.Range( 14, 16 ),
				'expectedData': function ( data ) {
					data.splice( 11, 2, { 'type': '/list' }, { 'type': 'paragraph' } );
					data.splice( 19, 2, { 'type': '/paragraph' }, { 'type': 'list', 'attributes': { 'style': 'bullet' } } );
				},
				'expectedOriginalData': function ( data ) {
					// generated: 'wrapper' is removed by the action and not restored by undo
					delete data[12].internal;
				},
				'msg': 'decrease indentation on partial selection of list item "Item 2"'
			},
			{
				'range': new ve.Range( 3, 19 ),
				'method': 'decrease',
				'expectedSelection': new ve.Range( 1, 15 ),
				'expectedData': function ( data ) {
					data.splice( 0, 2 );
					data.splice( 8, 2 );
					data.splice( 16, 1, { 'type': 'list', 'attributes': { 'style': 'bullet' } } );
					delete data[0].internal;
					delete data[8].internal;
				},
				'expectedOriginalData': function ( data ) {
					// generated: 'wrapper' is removed by the action and not restored by undo
					delete data[2].internal;
					delete data[12].internal;
				},
				'msg': 'decrease indentation on Items 1 & 2'
			},
			{
				'range': new ve.Range( 3, 19 ),
				'method': 'increase',
				'expectedSelection': new ve.Range( 5, 21 ),
				'expectedData': function ( data ) {
					data.splice( 0, 0, { 'type': 'list', 'attributes': { 'style': 'bullet' } }, { 'type': 'listItem' } );
					data.splice( 23, 0, { 'type': '/list' }, { 'type': '/listItem' } );
				},
				'msg': 'increase indentation on Items 1 & 2'
			}
		];

	QUnit.expect( cases.length * 4 );
	for ( i = 0; i < cases.length; i++ ) {
		runIndentationChangeTest( assert, cases[i].range, cases[i].method, cases[i].expectedSelection, cases[i].expectedData, cases[i].expectedOriginalData, cases[i].msg );
	}
} );