draggable.js

/*
 * draggable unit tests
 */
(function($) {
//
// Draggable Test Helper Functions
//

var defaults = {
	appendTo: "parent",
	axis: false,
	cancel: ":input,option",
	connectToSortable: false,
	containment: false,
	cursor: "default",
	cursorAt: null,
	delay: 0,
	disabled: false,
	distance: 1,
	grid: false,
	handle: false,
	helper: "original",
	iframeFix: false,
	opacity: null,
	refreshPositions: false,
	revert: false,
	revertDuration: 500,
	scroll: true,
	scrollSensitivity: 20,
	scrollSpeed: 20,
	scope: "default",
	snap: false,
	snapMode: "both",
	snapTolerance: 20,
	stack: false,
	zIndex: null
};

var el, offsetBefore, offsetAfter, dragged;

var drag = function(handle, dx, dy) {
	var element = el.data("draggable").element;
	offsetBefore = el.offset();
	$(handle).simulate("drag", {
		dx: dx || 0,
		dy: dy || 0
	});
	dragged = { dx: dx, dy: dy };
	offsetAfter = el.offset();
}

var moved = function (dx, dy, msg) {
	msg = msg ? msg + "." : "";
	var actual = { left: offsetAfter.left, top: offsetAfter.top };
	var expected = { left: offsetBefore.left + dx, top: offsetBefore.top + dy };
	same(actual, expected, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ' + msg);
}

function shouldmove(why) {
	drag(el, 50, 50);
	moved(50, 50, why);
}

function shouldnotmove(why) {
	drag(el, 50, 50);
	moved(0, 0, why);
}

var border = function(el, side) { return parseInt(el.css('border-' + side + '-width')); }

var margin = function(el, side) { return parseInt(el.css('margin-' + side)); }

// Draggable Tests
module("draggable");

test("init", function() {
	expect(6);

	$("<div></div>").appendTo('body').draggable().remove();
	ok(true, '.draggable() called on element');

	$([]).draggable();
	ok(true, '.draggable() called on empty collection');

	$("<div></div>").draggable();
	ok(true, '.draggable() called on disconnected DOMElement');

	$("<div></div>").draggable().draggable("foo");
	ok(true, 'arbitrary method called after init');

	$("<div></div>").draggable().data("foo.draggable");
	ok(true, 'arbitrary option getter after init');

	$("<div></div>").draggable().data("foo.draggable", "bar");
	ok(true, 'arbitrary option setter after init');
});

test("destroy", function() {
	expect(6);

	$("<div></div>").appendTo('body').draggable().draggable("destroy").remove();
	ok(true, '.draggable("destroy") called on element');

	$([]).draggable().draggable("destroy");
	ok(true, '.draggable("destroy") called on empty collection');

	$("<div></div>").draggable().draggable("destroy");
	ok(true, '.draggable("destroy") called on disconnected DOMElement');

	$("<div></div>").draggable().draggable("destroy").draggable("foo");
	ok(true, 'arbitrary method called after destroy');

	$("<div></div>").draggable().draggable("destroy").data("foo.draggable");
	ok(true, 'arbitrary option getter after destroy');

	$("<div></div>").draggable().draggable("destroy").data("foo.draggable", "bar");
	ok(true, 'arbitrary option setter after destroy');
});

test("enable", function() {
	expect(6);
	el = $("#draggable2").draggable({ disabled: true });
	shouldnotmove('.draggable({ disabled: true })');
	el.draggable("enable");
	shouldmove('.draggable("enable")');
	equals(el.data("disabled.draggable"), false, "disabled.draggable getter");

	el.draggable("destroy");
	el.draggable({ disabled: true });
	shouldnotmove('.draggable({ disabled: true })');
	el.data("disabled.draggable", false);
	equals(el.data("disabled.draggable"), false, "disabled.draggable setter");
	shouldmove('.data("disabled.draggable", false)');
});

test("disable", function() {
	expect(6);
	el = $("#draggable2").draggable({ disabled: false });
	shouldmove('.draggable({ disabled: false })');
	el.draggable("disable");
	shouldnotmove('.draggable("disable")');
	equals(el.data("disabled.draggable"), true, "disabled.draggable getter");

	el.draggable("destroy");

	el.draggable({ disabled: false });
	shouldmove('.draggable({ disabled: false })');
	el.data("disabled.draggable", true);
	equals(el.data("disabled.draggable"), true, "disabled.draggable setter");
	shouldnotmove('.data("disabled.draggable", true)');
});

test("element types", function() {
	var typeNames = ('p,h1,h2,h3,h4,h5,h6,blockquote,ol,ul,dl,div,form'
		+ ',table,fieldset,address,ins,del,em,strong,q,cite,dfn,abbr'
		+ ',acronym,code,samp,kbd,var,img,object,hr'
		+ ',input,button,label,select,iframe').split(',');

	$.each(typeNames, function(i) {
		var typeName = typeNames[i];
		el = $(document.createElement(typeName)).appendTo('body');
		(typeName == 'table' && el.append("<tr><td>content</td></tr>"));
		el.draggable({ cancel: '' });
		drag(el, 50, 50);
		moved(50, 50, "&lt;" + typeName + "&gt;");
		el.draggable("destroy");
		el.remove();
	});
});

test("defaults", function() {
	el = $('<div></div>').draggable();
	$.each(defaults, function(key, val) {
		var actual = el.data(key + ".draggable"), expected = val;
		same(actual, expected, key);
	});
	el.remove();
});

test("No options, relative", function() {
	el = $("#draggable1").draggable();
	drag(el, 50, 50);
	moved(50, 50);
});

test("No options, absolute", function() {
	el = $("#draggable2").draggable();
	drag(el, 50, 50);
	moved(50, 50);
});

module("draggable: Options");

test("{ axis: false }, default", function() {
	el = $("#draggable2").draggable({ axis: false });
	drag(el, 50, 50);
	moved(50, 50);
});

test("{ axis: 'x' }", function() {
	el = $("#draggable2").draggable({ axis: "x" });
	drag(el, 50, 50);
	moved(50, 0);
});

test("{ axis: 'y' }", function() {
	el = $("#draggable2").draggable({ axis: "y" });
	drag(el, 50, 50);
	moved(0, 50);
});

test("{ axis: ? }, unexpected", function() {
	var unexpected = {
		"true": true,
		"{}": {},
		"[]": [],
		"null": null,
		"undefined": undefined,
		"function() {}": function() {}
	};
	$.each(unexpected, function(key, val) {
		el = $("#draggable2").draggable({ axis: val });
		drag(el, 50, 50);
		moved(50, 50, "axis: " + key);
		el.draggable("destroy");
	})
});

test("{ cancel: 'span' }", function() {
	el = $("#draggable2").draggable();
	drag("#draggable2 span", 50, 50);
	moved(50, 50);

	el.draggable("destroy");

	el = $("#draggable2").draggable({ cancel: 'span' });
	drag("#draggable2 span", 50, 50);
	moved(0, 0);
});

test("{ cancel: ? }, unexpected", function() {
	var unexpected = {
		"true": true,
		"false": false,
		"{}": {},
		"[]": [],
		"null": null,
		"undefined": undefined,
		"function() {return '';}": function() {return '';},
		"function() {return true;}": function() {return true;},
		"function() {return false;}": function() {return false;}
	};
	$.each(unexpected, function(key, val) {
		el = $("#draggable2").draggable({ cancel: val });
		drag(el, 50, 50);
		var expected = [50, 50];
		moved(expected[0], expected[1], "cancel: " + key);
		el.draggable("destroy");
	})
});

test("{ containment: 'parent' }, relative", function() {
	el = $("#draggable1").draggable({ containment: 'parent' });
	var p = el.parent(), po = p.offset();
	drag(el, -100, -100);
	var expected = {
		left: po.left + border(p, 'left') + margin(el, 'left'),
		top: po.top + border(p, 'top') + margin(el, 'top')
	}
	same(offsetAfter, expected, 'compare offset to parent');
});

test("{ containment: 'parent' }, absolute", function() {
	el = $("#draggable2").draggable({ containment: 'parent' });
	var p = el.parent(), po = p.offset();
	drag(el, -100, -100);
	var expected = {
		left: po.left + border(p, 'left') + margin(el, 'left'),
		top: po.top + border(p, 'top') + margin(el, 'top')
	}
	same(offsetAfter, expected, 'compare offset to parent');
});

test("{ cursor: 'move' }", function() {

	function getCursor() { return $("body").css("cursor"); }

	expect(2);

	var expected = "move", actual, before, after;

	el = $("#draggable2").draggable({
		cursor: expected,
		start: function(event, ui) {
			actual = getCursor();
		}
	});

	before = getCursor();
	drag("#draggable2", -1, -1);
	after = getCursor();

	equals(actual, expected, "start callback: cursor '" + expected + "'");
	equals(after, before, "after drag: cursor restored");

});

test("{ cursorAt: { left: -5, top: -5 } }", function() {

	expect(4);

	var dx = -3, dy = -3;
	var ox = 5, oy = 5;
	var cax = -5, cay = -5;

	var actual = null;
	$("#draggable2").draggable({
		cursorAt: { left: cax, top: cay },
		drag: function(event, ui) {
			actual = ui.absolutePosition;
		}
	});
	var el = $("#draggable2").data("draggable").element;

	var before = el.offset();
	var pos = { clientX: before.left + ox, clientY: before.top + oy };
	$("#draggable2").simulate("mousedown", pos);
	pos = { clientX: pos.clientX + dx, clientY: pos.clientY + dy };
	$(document).simulate("mousemove", pos);
	$(document).simulate("mousemove", pos);
	$("#draggable2").simulate("mouseup", pos);
	var expected = {
		left: before.left + ox - cax + dx,
		top: before.top + oy - cay + dy
	};

	equals(actual.left, expected.left, "Absolute: -1px left");
	equals(actual.top, expected.top, "Absolute: -1px top");

	var actual = null;
	$("#draggable1").draggable({
		cursorAt: { left: cax, top: cay },
		drag: function(event, ui) {
			actual = ui.absolutePosition;
		}
	});
	var el = $("#draggable2").data("draggable").element;

	var before = el.offset();
	var pos = { clientX: before.left + ox, clientY: before.top + oy };
	$("#draggable2").simulate("mousedown", pos);
	pos = { clientX: pos.clientX + dx, clientY: pos.clientY + dy };
	$(document).simulate("mousemove", pos);
	$(document).simulate("mousemove", pos);
	$("#draggable2").simulate("mouseup", pos);
	var expected = {
		left: before.left + ox - cax + dx,
		top: before.top + oy - cay + dy
	};

	equals(actual.left, expected.left, "Relative: -1px left");
	equals(actual.top, expected.top, "Relative: -1px top");

});

test("{ distance: 10 }", function() {

	el = $("#draggable2").draggable({ distance: 10 });
	drag(el, -9, -9);
	moved(0, 0, 'distance not met');

	drag(el, -10, -10);
	moved(-10, -10, 'distance met');

	drag(el, 9, 9);
	moved(0, 0, 'distance not met');

});

test("{ grid: [50, 50] }, relative", function() {
	el = $("#draggable1").draggable({ grid: [50, 50] });
	drag(el, 24, 24);
	moved(0, 0);
	drag(el, 26, 25);
	moved(50, 50);
});

test("{ grid: [50, 50] }, absolute", function() {
	el = $("#draggable2").draggable({ grid: [50, 50] });
	drag(el, 24, 24);
	moved(0, 0);
	drag(el, 26, 25);
	moved(50, 50);
});

test("{ handle: 'span' }", function() {
	el = $("#draggable2").draggable({ handle: 'span' });

	drag("#draggable2 span", 50, 50);
	moved(50, 50, "drag span");

	drag("#draggable2", 50, 50);
	moved(0, 0, "drag element");
});

test("{ helper: 'clone' }, relative", function() {
	el = $("#draggable1").draggable({ helper: "clone" });
	drag(el, 50, 50);
	moved(0, 0);
});

test("{ helper: 'clone' }, absolute", function() {
	el = $("#draggable2").draggable({ helper: "clone" });
	drag(el, 50, 50);
	moved(0, 0);
});

test("{ opacity: 0.5 }", function() {

	expect(1);

	var opacity = null;
	el = $("#draggable2").draggable({
		opacity: 0.5,
		start: function(event, ui) {
			opacity = $(this).css("opacity");
		}
	});

	drag("#draggable2", -1, -1);

	equals(opacity, 0.5, "start callback: opacity is");

});

test("{ zIndex: 10 }", function() {

	expect(1);

	var expected = 10, actual;

	var zIndex = null;
	el = $("#draggable2").draggable({
		zIndex: expected,
		start: function(event, ui) {
			actual = $(this).css("zIndex");
		}
	});

	drag("#draggable2", -1, -1);

	equals(actual, expected, "start callback: zIndex is");

});

module("draggable: Callbacks");

test("callbacks occurance count", function() {

	expect(3);

	var start = 0, stop = 0, dragc = 0;
	el = $("#draggable2").draggable({
		start: function() { start++; },
		drag: function() { dragc++; },
		stop: function() { stop++; }
	});

	drag(el, 10, 10);

	equals(start, 1, "start callback should happen exactly once");
	equals(dragc, 3, "drag callback should happen exactly once per mousemove");
	equals(stop, 1, "stop callback should happen exactly once");

});

module("draggable: Scroll offsets");


function testScroll(position) {
	$("#main").css('position', position);
	drag(el, 50, 50);
	moved(50, 50, position+' parent');

}

function setScroll(what) {
	if(what) {
		$(document).scrollTop(100); $(document).scrollLeft(100);
	} else {
		$("#main")[0].scrollTop = 100; $("#main")[0].scrollLeft = 100;
	}
}

function restoreScroll(what) {
	if(what) {
		$(document).scrollTop(0); $(document).scrollLeft(0);
	} else {
		$("#main")[0].scrollTop = 0; $("#main")[0].scrollLeft = 0;
	}
}

test("{ helper: 'original' }, relative, with scroll offset on parent", function() {
	
	el = $("#draggable1").draggable({ helper: "original" });

	setScroll();
	testScroll('relative');
	
	setScroll();
	testScroll('static');
	
	setScroll();
	testScroll('absolute');

	restoreScroll();
	
});

test("{ helper: 'original' }, relative, with scroll offset on root", function() {
	
	el = $("#draggable1").draggable({ helper: "original" });
	
	setScroll('root');
	testScroll('relative');
	
	setScroll('root');
	testScroll('static');
	
	setScroll('root');
	testScroll('absolute');

	restoreScroll('root');
	
});

test("{ helper: 'original' }, relative, with scroll offset on root and parent", function() {
	
	el = $("#draggable1").draggable({ helper: "original" });
	
	setScroll();
	setScroll('root');
	testScroll('relative');
	
	setScroll();
	setScroll('root');
	testScroll('static');
	
	setScroll();
	setScroll('root');
	testScroll('absolute');

	restoreScroll();
	restoreScroll('root');
	
});

test("{ helper: 'original' }, absolute, with scroll offset on parent", function() {

	el = $("#draggable1").css({ position: 'absolute', top: 0, left: 0 }).draggable({ helper: "original" });

	setScroll();
	testScroll('relative');
	
	setScroll();
	testScroll('static');
	
	setScroll();
	testScroll('absolute');

	restoreScroll();

});

test("{ helper: 'original' }, absolute, with scroll offset on root", function() {

	el = $("#draggable1").css({ position: 'absolute', top: 0, left: 0 }).draggable({ helper: "original" });
	
	setScroll('root');
	testScroll('relative');
	
	setScroll('root');
	testScroll('static');
	
	setScroll('root');
	testScroll('absolute');

	restoreScroll('root');
	
});

test("{ helper: 'original' }, absolute, with scroll offset on root and parent", function() {

	el = $("#draggable1").css({ position: 'absolute', top: 0, left: 0 }).draggable({ helper: "original" });

	setScroll();
	setScroll('root');
	testScroll('relative');
	
	setScroll();
	setScroll('root');
	testScroll('static');
	
	setScroll();
	setScroll('root');
	testScroll('absolute');

	restoreScroll();
	restoreScroll('root');
	
});

//Fixed not for IE < 7
if(!($.browser.msie && $.browser.version < 7)) {

	test("{ helper: 'original' }, fixed, with scroll offset on parent", function() {
		
		el = $("#draggable1").css({ position: 'fixed', top: 0, left: 0 }).draggable({ helper: "original" });

		setScroll();
		testScroll('relative');
		
		setScroll();
		testScroll('static');
		
		setScroll();
		testScroll('absolute');
	
		restoreScroll();
	
	});

	test("{ helper: 'original' }, fixed, with scroll offset on root", function() {
		
		el = $("#draggable1").css({ position: 'fixed', top: 0, left: 0 }).draggable({ helper: "original" });

		setScroll('root');
		testScroll('relative');
		
		setScroll('root');
		testScroll('static');
		
		setScroll('root');
		testScroll('absolute');
	
		restoreScroll('root');

	});

	test("{ helper: 'original' }, fixed, with scroll offset on root and parent", function() {

		el = $("#draggable1").css({ position: 'fixed', top: 0, left: 0 }).draggable({ helper: "original" });

		setScroll();
		setScroll('root');
		testScroll('relative');
		
		setScroll();
		setScroll('root');
		testScroll('static');
		
		setScroll();
		setScroll('root');
		testScroll('absolute');
	
		restoreScroll();
		restoreScroll('root');

	});

}



test("{ helper: 'clone' }, absolute", function() {

	var helperOffset = null;
	var origOffset = $("#draggable1").offset();

	el = $("#draggable1").draggable({ helper: "clone", drag: function(event, ui) {
		helperOffset = ui.helper.offset();
	} });

	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');

});

test("{ helper: 'clone' }, absolute with scroll offset on parent", function() {

	setScroll();
	var helperOffset = null;
	var origOffset = null;

	el = $("#draggable1").draggable({ helper: "clone", drag: function(event, ui) {
		helperOffset = ui.helper.offset();
	} });

	$("#main").css('position', 'relative');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');

	$("#main").css('position', 'static');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');
	
	$("#main").css('position', 'absolute');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');
	
	restoreScroll();

});

test("{ helper: 'clone' }, absolute with scroll offset on root", function() {

	setScroll('root');
	var helperOffset = null;
	var origOffset = null;

	el = $("#draggable1").draggable({ helper: "clone", drag: function(event, ui) {
		helperOffset = ui.helper.offset();
	} });
	
	$("#main").css('position', 'relative');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');

	$("#main").css('position', 'static');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');
	
	$("#main").css('position', 'absolute');
	origOffset = $("#draggable1").offset();
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');	
	
	restoreScroll('root');

});

test("{ helper: 'clone' }, absolute with scroll offset on root and parent", function() {

	setScroll('root');
	setScroll();
	var helperOffset = null;
	var origOffset = null;

	el = $("#draggable1").draggable({ helper: "clone", drag: function(event, ui) {
		helperOffset = ui.helper.offset();
	} });

	$("#main").css('position', 'relative');
	origOffset = $("#draggable1").offset()
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');

	$("#main").css('position', 'static');
	origOffset = $("#draggable1").offset()
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');
	
	$("#main").css('position', 'absolute');
	origOffset = $("#draggable1").offset()
	drag(el, 1, 1);
	same({ top: helperOffset.top-1, left: helperOffset.left-1 }, origOffset, 'dragged[' + dragged.dx + ', ' + dragged.dy + '] ');
	
	restoreScroll('root');
	restoreScroll();

});

module("draggable: behaviour");

test("Events should not be executed on the element if drag is initiated", function() {
	//TODO: Implement missing test
});


module("draggable: Tickets");

})(jQuery);