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QUnit.module( 'jquery.textSelection', QUnit.newMwEnvironment() );

/**
 * Test factory for $.fn.textSelection( 'encapsulateText' )
 *
 * @param options {object} associative array containing:
 *   description {string}
 *   input {string}
 *   output {string}
 *   start {int} starting char for selection
 *   end {int} ending char for selection
 *   params {object} add'l parameters for $().textSelection( 'encapsulateText' )
 */
function encapsulateTest( options ) {
	var opt = $.extend({
		description: '',
		before: {},
		after: {},
		replace: {}
	}, options);

	opt.before = $.extend({
		text: '',
		start: 0,
		end: 0
	}, opt.before);
	opt.after = $.extend({
		text: '',
		selected: null
	}, opt.after);

	QUnit.test( opt.description, function ( assert ) {
		var tests = 1;
		if ( opt.after.selected !== null ) {
			tests++;
		}
		QUnit.expect( tests );

		var $textarea = $( '<textarea>' );

		$( '#qunit-fixture' ).append( $textarea );

		//$textarea.textSelection( 'setContents', opt.before.text); // this method is actually missing atm...
		$textarea.val( opt.before.text ); // won't work with the WikiEditor iframe?

		var	start = opt.before.start,
			end = opt.before.end;
		if ( window.opera ) {
			// Compensate for Opera's craziness converting "\n" to "\r\n" and counting that as two chars
			var	newLinesBefore = opt.before.text.substring( 0, start ).split( "\n" ).length - 1,
				newLinesInside = opt.before.text.substring( start, end ).split( "\n" ).length - 1;
			start += newLinesBefore;
			end += newLinesBefore + newLinesInside;
		}

		var options = $.extend( {}, opt.replace ); // Clone opt.replace
		options.selectionStart = start;
		options.selectionEnd = end;
		$textarea.textSelection( 'encapsulateSelection', options );

		var text = $textarea.textSelection( 'getContents' ).replace( /\r\n/g, "\n" );

		assert.equal( text, opt.after.text, 'Checking full text after encapsulation' );

		if (opt.after.selected !== null) {
			var selected = $textarea.textSelection( 'getSelection' );
			assert.equal( selected, opt.after.selected, 'Checking selected text after encapsulation.' );
		}

	} );
}

var sig = {
	'pre': "--~~~~"
}, bold = {
	pre: "'''",
	peri: 'Bold text',
	post: "'''"
}, h2 = {
	'pre': '== ',
	'peri': 'Heading 2',
	'post': ' ==',
	'regex': /^(\s*)(={1,6})(.*?)\2(\s*)$/,
	'regexReplace': "$1==$3==$4",
	'ownline': true
}, ulist = {
	'pre': "* ",
	'peri': 'Bulleted list item',
	'post': "",
	'ownline': true,
	'splitlines': true
};

encapsulateTest({
	description: "Adding sig to end of text",
	before: {
		text: "Wikilove dude! ",
		start: 15,
		end: 15
	},
	after: {
		text: "Wikilove dude! --~~~~",
		selected: ""
	},
	replace: sig
});

encapsulateTest({
	description: "Adding bold to empty",
	before: {
		text: "",
		start: 0,
		end: 0
	},
	after: {
		text: "'''Bold text'''",
		selected: "Bold text" // selected because it's the default
	},
	replace: bold
});

encapsulateTest({
	description: "Adding bold to existing text",
	before: {
		text: "Now is the time for all good men to come to the aid of their country",
		start: 20,
		end: 32
	},
	after: {
		text: "Now is the time for '''all good men''' to come to the aid of their country",
		selected: "" // empty because it's not the default'
	},
	replace: bold
});

encapsulateTest({
	description: "ownline option: adding new h2",
	before: {
		text:"Before\nAfter",
		start: 7,
		end: 7
	},
	after: {
		text: "Before\n== Heading 2 ==\nAfter",
		selected: "Heading 2"
	},
	replace: h2
});

encapsulateTest({
	description: "ownline option: turn a whole line into new h2",
	before: {
		text:"Before\nMy heading\nAfter",
		start: 7,
		end: 17
	},
	after: {
		text: "Before\n== My heading ==\nAfter",
		selected: ""
	},
	replace: h2
});


encapsulateTest({
	description: "ownline option: turn a partial line into new h2",
	before: {
		text:"BeforeMy headingAfter",
		start: 6,
		end: 16
	},
	after: {
		text: "Before\n== My heading ==\nAfter",
		selected: ""
	},
	replace: h2
});


encapsulateTest({
	description: "splitlines option: no selection, insert new list item",
	before: {
		text: "Before\nAfter",
		start: 7,
		end: 7
	},
	after: {
		text: "Before\n* Bulleted list item\nAfter"
	},
	replace: ulist
});

encapsulateTest({
	description: "splitlines option: single partial line selection, insert new list item",
	before: {
		text: "BeforeMy List ItemAfter",
		start: 6,
		end: 18
	},
	after: {
		text: "Before\n* My List Item\nAfter"
	},
	replace: ulist
});

encapsulateTest({
	description: "splitlines option: multiple lines",
	before: {
		text: "Before\nFirst\nSecond\nThird\nAfter",
		start: 7,
		end: 25
	},
	after: {
		text: "Before\n* First\n* Second\n* Third\nAfter"
	},
	replace: ulist
});


function caretTest( options ) {
	QUnit.test( options.description, 2, function ( assert ) {
		var $textarea = $( '<textarea>' ).text( options.text );

		$( '#qunit-fixture' ).append( $textarea );

		if ( options.mode === 'set' ) {
			$textarea.textSelection('setSelection', {
				start: options.start,
				end: options.end
			});
		}

		function among( actual, expected, message ) {
			if ( $.isArray( expected ) ) {
				assert.ok( $.inArray( actual, expected ) !== -1 , message + ' (got ' + actual + '; expected one of ' + expected.join(', ') + ')' );
			} else {
				assert.equal( actual, expected, message );
			}
		}

		var pos = $textarea.textSelection('getCaretPosition', {startAndEnd: true});
		among(pos[0], options.start, 'Caret start should be where we set it.');
		among(pos[1], options.end, 'Caret end should be where we set it.');
	});
}

var caretSample = "Some big text that we like to work with. Nothing fancy... you know what I mean?";

/*
 // @broken: Disabled per bug 34820
caretTest({
	description: 'getCaretPosition with original/empty selection - bug 31847 with IE 6/7/8',
	text: caretSample,
	start: [0, caretSample.length], // Opera and Firefox (prior to FF 6.0) default caret to the end of the box (caretSample.length)
	end: [0, caretSample.length], // Other browsers default it to the beginning (0), so check both.
	mode: 'get'
});
*/

caretTest({
	description: 'set/getCaretPosition with forced empty selection',
	text: caretSample,
	start: 7,
	end: 7,
	mode: 'set'
});

caretTest({
	description: 'set/getCaretPosition with small selection',
	text: caretSample,
	start: 6,
	end: 11,
	mode: 'set'
});