mirror of
https://github.com/jquery/jquery.git
synced 2024-11-23 02:54:22 +00:00
74 lines
2.6 KiB
JavaScript
74 lines
2.6 KiB
JavaScript
module("event");
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(function(){
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var notYetReady, noEarlyExecution,
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order = [],
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args = {};
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notYetReady = !jQuery.isReady;
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test("jQuery.isReady", function() {
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expect(2);
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equal(notYetReady, true, "jQuery.isReady should not be true before DOM ready");
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equal(jQuery.isReady, true, "jQuery.isReady should be true once DOM is ready");
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});
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// Create an event handler.
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function makeHandler( testId ) {
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// When returned function is executed, push testId onto `order` array
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// to ensure execution order. Also, store event handler arg to ensure
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// the correct arg is being passed into the event handler.
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return function( arg ) {
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order.push(testId);
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args[testId] = arg;
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};
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}
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// Bind to the ready event in every possible way.
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jQuery(makeHandler("a"));
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jQuery(document).ready(makeHandler("b"));
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jQuery(document).on("ready.readytest", makeHandler("c"));
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// Do it twice, just to be sure.
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jQuery(makeHandler("d"));
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jQuery(document).ready(makeHandler("e"));
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jQuery(document).on("ready.readytest", makeHandler("f"));
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noEarlyExecution = order.length === 0;
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// This assumes that QUnit tests are run on DOM ready!
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test("jQuery ready", function() {
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expect(10);
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ok(noEarlyExecution, "Handlers bound to DOM ready should not execute before DOM ready");
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// Ensure execution order.
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deepEqual(order, ["a", "b", "d", "e", "c", "f"], "Bound DOM ready handlers should execute in on-order, but those bound with jQuery(document).on( 'ready', fn ) will always execute last");
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// Ensure handler argument is correct.
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equal(args["a"], jQuery, "Argument passed to fn in jQuery( fn ) should be jQuery");
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equal(args["b"], jQuery, "Argument passed to fn in jQuery(document).ready( fn ) should be jQuery");
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ok(args["c"] instanceof jQuery.Event, "Argument passed to fn in jQuery(document).on( 'ready', fn ) should be an event object");
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order = [];
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// Now that the ready event has fired, again bind to the ready event
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// in every possible way. These event handlers should execute immediately.
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jQuery(makeHandler("g"));
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equal(order.pop(), "g", "Event handler should execute immediately");
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equal(args["g"], jQuery, "Argument passed to fn in jQuery( fn ) should be jQuery");
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jQuery(document).ready(makeHandler("h"));
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equal(order.pop(), "h", "Event handler should execute immediately");
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equal(args["h"], jQuery, "Argument passed to fn in jQuery(document).ready( fn ) should be jQuery");
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jQuery(document).on("ready.readytest", makeHandler("never"));
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equal(order.length, 0, "Event handler should never execute since DOM ready has already passed");
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// Cleanup.
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jQuery(document).off("ready.readytest");
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});
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})();
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