define( [
	"qunit",
	"jquery",
	"./helper",
	"ui/widgets/spinner"
], function( QUnit, $, testHelper ) {

var simulateKeyDownUp = testHelper.simulateKeyDownUp;

QUnit.module( "spinner: core" );

QUnit.test( "markup structure", function( assert ) {
	assert.expect( 6 );
	var element = $( "#spin" ).spinner(),
		spinner = element.spinner( "widget" ),
		up = spinner.find( ".ui-spinner-up" ),
		down = spinner.find( ".ui-spinner-down" );

	assert.hasClasses( element, "ui-spinner-input" );
	assert.hasClasses( spinner, "ui-spinner ui-widget ui-widget-content" );
	assert.hasClasses( up, "ui-spinner-button ui-spinner-up ui-widget" );
	assert.equal( up.length, 1, "Spinner contains exactly one up button" );
	assert.hasClasses( down, "ui-spinner-button ui-spinner-down ui-widget" );
	assert.equal( down.length, 1, "Spinner contains exactly one down button" );
} );

QUnit.test( "keydown UP on input, increases value not greater than max", function( assert ) {
	assert.expect( 5 );
	var element = $( "#spin" ).val( 70 ).spinner( {
		max: 100,
		step: 10
	} );

	simulateKeyDownUp( element, $.ui.keyCode.UP );
	assert.equal( element.val(), 80 );
	simulateKeyDownUp( element, $.ui.keyCode.UP );
	assert.equal( element.val(), 90 );
	simulateKeyDownUp( element, $.ui.keyCode.UP );
	assert.equal( element.val(), 100 );
	simulateKeyDownUp( element, $.ui.keyCode.UP );
	assert.equal( element.val(), 100 );
	simulateKeyDownUp( element, $.ui.keyCode.UP );
	assert.equal( element.val(), 100 );
} );

QUnit.test( "keydown DOWN on input, decreases value not less than min", function( assert ) {
	assert.expect( 5 );
	var element = $( "#spin" ).val( 50 ).spinner( {
		min: 20,
		step: 10
	} );

	simulateKeyDownUp( element, $.ui.keyCode.DOWN );
	assert.equal( element.val(), 40 );
	simulateKeyDownUp( element, $.ui.keyCode.DOWN );
	assert.equal( element.val(), 30 );
	simulateKeyDownUp( element, $.ui.keyCode.DOWN );
	assert.equal( element.val(), 20 );
	simulateKeyDownUp( element, $.ui.keyCode.DOWN );
	assert.equal( element.val(), 20 );
	simulateKeyDownUp( element, $.ui.keyCode.DOWN );
	assert.equal( element.val(), 20 );
} );

QUnit.test( "keydown PAGE_UP on input, increases value not greater than max", function( assert ) {
	assert.expect( 5 );
	var element = $( "#spin" ).val( 70 ).spinner( {
		max: 100,
		page: 10
	} );

	simulateKeyDownUp( element, $.ui.keyCode.PAGE_UP );
	assert.equal( element.val(), 80 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_UP );
	assert.equal( element.val(), 90 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_UP );
	assert.equal( element.val(), 100 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_UP );
	assert.equal( element.val(), 100 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_UP );
	assert.equal( element.val(), 100 );
} );

QUnit.test( "keydown PAGE_DOWN on input, decreases value not less than min", function( assert ) {
	assert.expect( 5 );
	var element = $( "#spin" ).val( 50 ).spinner( {
		min: 20,
		page: 10
	} );

	simulateKeyDownUp( element, $.ui.keyCode.PAGE_DOWN );
	assert.equal( element.val(), 40 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_DOWN );
	assert.equal( element.val(), 30 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_DOWN );
	assert.equal( element.val(), 20 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_DOWN );
	assert.equal( element.val(), 20 );
	simulateKeyDownUp( element, $.ui.keyCode.PAGE_DOWN );
	assert.equal( element.val(), 20 );
} );

QUnit.test( "blur input while spinning with UP", function( assert ) {
	var ready = assert.async();
	assert.expect( 3 );
	var value,
		element = $( "#spin" ).val( 10 ).spinner();

	function step1() {
		element.simulate( "keydown", { keyCode: $.ui.keyCode.UP } );
		assert.equal( element.val(), 11 );
		setTimeout( step2, 750 );
	}

	function step2() {
		value = element.val();
		assert.ok( value > 11, "repeating while key is down" );

		element.on( "blur", function() {
			value = element.val();
			setTimeout( step3, 750 );
		} )[ 0 ].blur();
	}

	function step3() {
		assert.equal( element.val(), value, "stopped repeating on blur" );
		ready();
	}

	element[ 0 ].focus();
	setTimeout( step1 );
} );

QUnit.test( "mouse click on up button, increases value not greater than max", function( assert ) {
	assert.expect( 3 );
	var element = $( "#spin" ).val( 18 ).spinner( {
			max: 20
		} ),
		button = element.spinner( "widget" ).find( ".ui-spinner-up" );

	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 19 );
	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 20 );
	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 20 );
} );

QUnit.test( "mouse click on up button, increases value not greater than max", function( assert ) {
	assert.expect( 3 );
	var element = $( "#spin" ).val( 2 ).spinner( {
		min: 0
	} ),
	button = element.spinner( "widget" ).find( ".ui-spinner-down" );

	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 1 );
	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 0 );
	button.trigger( "mousedown" ).trigger( "mouseup" );
	assert.equal( element.val(), 0 );
} );

QUnit.test( "mousewheel on input", function( assert ) {
	assert.expect( 4 );

	var element = $( "#spin" ).val( 0 ).spinner( {
		step: 2
	} );

	element.trigger( "mousewheel" );
	assert.equal( element.val(), 0, "mousewheel event without delta does not change value" );

	element.trigger( "mousewheel", 1 );
	assert.equal( element.val(), 2 );

	element.trigger( "mousewheel", -0.2 );
	assert.equal( element.val(), 0 );

	element.trigger( "mousewheel", -15 );
	assert.equal( element.val(), -2 );
} );

QUnit.test( "reading HTML5 attributes", function( assert ) {
	assert.expect( 6 );
	var markup = "<input type='number' min='-100' max='100' value='5' step='2'>",
		element = $( markup ).spinner();
	assert.equal( element.spinner( "option", "min" ), -100, "min from markup" );
	assert.equal( element.spinner( "option", "max" ), 100, "max from markup" );
	assert.equal( element.spinner( "option", "step" ), 2, "step from markup" );

	element = $( markup ).spinner( {
		min: -200,
		max: 200,
		step: 5
	} );
	assert.equal( element.spinner( "option", "min" ), -200, "min from options" );
	assert.equal( element.spinner( "option", "max" ), 200, "max from options" );
	assert.equal( element.spinner( "option", "step" ), 5, "stop from options" );
} );

QUnit.test( "ARIA attributes", function( assert ) {
	assert.expect( 9 );
	var element = $( "#spin" ).val( 2 ).spinner( { min: -5, max: 5 } );

	assert.equal( element.attr( "role" ), "spinbutton", "role" );
	assert.equal( element.attr( "aria-valuemin" ), "-5", "aria-valuemin" );
	assert.equal( element.attr( "aria-valuemax" ), "5", "aria-valuemax" );
	assert.equal( element.attr( "aria-valuenow" ), "2", "aria-valuenow" );

	element.spinner( "stepUp" );

	assert.equal( element.attr( "aria-valuenow" ), "3", "stepUp 1 step changes aria-valuenow" );

	element.spinner( "option", { min: -10, max: 10 } );

	assert.equal( element.attr( "aria-valuemin" ), "-10", "min option changed aria-valuemin changes" );
	assert.equal( element.attr( "aria-valuemax" ), "10", "max option changed aria-valuemax changes" );

	element.spinner( "option", "min", null );
	assert.equal( element.attr( "aria-valuemin" ), undefined, "aria-valuemin not set when no min" );

	element.spinner( "option", "max", null );
	assert.equal( element.attr( "aria-valuemax" ), undefined, "aria-valuemax not set when no max" );
} );

QUnit.test( "focus text field when pressing button", function( assert ) {
	assert.expect( 2 );
	var element = $( "#spin" ).spinner();
	$( "body" ).trigger( "focus" );
	assert.ok( element[ 0 ] !== document.activeElement, "not focused before" );
	element.spinner( "widget" ).find( ".ui-spinner-up" ).trigger( "mousedown" );
	assert.ok( element[ 0 ] === document.activeElement, "focused after" );
} );

QUnit.test( "don't clear invalid value on blur", function( assert ) {
	assert.expect( 1 );
	var element = $( "#spin" ).spinner();
	element.trigger( "focus" ).val( "a" ).trigger( "blur" );
	assert.equal( element.val(), "a" );
} );

QUnit.test( "precision", function( assert ) {
	assert.expect( 2 );
	var element = $( "#spin" ).val( 0.05 ).spinner( {
		step: 0.0001
	} );
	element.spinner( "stepUp" );
	assert.equal( element.val(), "0.0501", "precision from step" );

	element.val( 1.05 ).spinner( "option", {
		step: 1,
		min: -9.95
	} );
	element.spinner( "stepDown" );
	assert.equal( element.val(), "0.05", "precision from min" );
} );

} );