gistfile1.js

  it("should allow the last character to be deleted", function(){
		var chosen,
				input,
				key,
				returnQuery,
				clock = sinon.useFakeTimers(),
				xhr = sinon.useFakeXMLHttpRequest(),
				requests = [];

		xhr.onCreate = function (xhr) { requests.push(xhr) };

		chosen = $('select', space).ajaxChosen({
			dataType: 'json',
			type: 'POST',
			url: '/search'
		},{}).next();
		chosen.trigger('click').width('135px');

		input = $('input', chosen).val('monkey');
		key = $.Event('keyup');
		key.which = 32;
		//fire off request
		input.trigger(key);
		clock.tick(750);
		//respond
		returnQuery = 'monkey';
		requests[0].respond(200, { "Content-Type": "application/json" }, '{ "q": "'+returnQuery+'", "results": [{"id":1, "text":"first monkey"}]}');

		//assert
		expect(input.val()).to.equal(returnQuery);

		//delete all but 1 character
		input.val('m');
		key = $.Event('keyup');
		key.which = 32;
		//fire request
		input.trigger(key);
		clock.tick(750);

		//delete all characters before server responds
		key = $.Event('keyup');
		key.which = 8;
		input.val('');
		input.trigger(key);

		returnQuery = 'm';
		requests[1].respond(200, { "Content-Type": "application/json" }, '{ "q": "'+returnQuery+'", "results": [{"id":1, "text":"first monkey"}]}');

		//assert that the text box is empty and doesn't contain the last response q
		expect(input.val()).to.be.empty();
	});