How to use Tween method in Cypress

...104	assert.expect( 13 );105	var testObject = { test: 100 },106		testOptions = { duration: 100 },107		tween, easingSpy;108	tween = jQuery.Tween( testObject, testOptions, "test", 0, "linear" );109	assert.equal( tween.elem, testObject, "Sets .element" );110	assert.equal( tween.options, testOptions, "sets .options" );111	assert.equal( tween.prop, "test", "sets .prop" );112	assert.equal( tween.end, 0, "sets .end" );113	assert.equal( tween.easing, "linear", "sets .easing when provided" );114	assert.equal( tween.start, 100, "Reads .start value during construction" );115	assert.equal( tween.now, 100, "Reads .now value during construction" );116	easingSpy = this.sandbox.spy( jQuery.easing, "linear" );117	assert.equal( tween.run( 0.1 ), tween, ".run() returns this" );118	assert.equal( tween.now, 90, "Calculated tween" );119	assert.ok( easingSpy.calledWith( 0.1, 0.1 * testOptions.duration, 0, 1, testOptions.duration ),120		"...using jQuery.easing.linear with back-compat arguments" );121	assert.equal( testObject.test, 90, "Set value" );122	tween.run( 1 );123	assert.equal( testObject.test, 0, "Checking another value" );124	tween.run( 0 );125	assert.equal( testObject.test, 100, "Can even go back in time" );126} );127QUnit.test( "jQuery.Tween - Element", function( assert ) {128	assert.expect( 15 );129	var testElement = jQuery( "<div>" ).css( "height", 100 )[ 0 ],130		testOptions = { duration: 100 },131		tween, easingSpy, eased;132	tween = jQuery.Tween( testElement, testOptions, "height", 0 );133	assert.equal( tween.elem, testElement, "Sets .element" );134	assert.equal( tween.options, testOptions, "sets .options" );135	assert.equal( tween.prop, "height", "sets .prop" );136	assert.equal( tween.end, 0, "sets .end" );137	assert.equal(138		tween.easing,139		jQuery.easing._default,140		"sets .easing to default when not provided"141	);142	assert.equal( tween.unit, "px", "sets .unit to px when not provided" );143	assert.equal( tween.start, 100, "Reads .start value during construction" );144	assert.equal( tween.now, 100, "Reads .now value during construction" );145	easingSpy = this.sandbox.spy( jQuery.easing, "swing" );146	assert.equal( tween.run( 0.1 ), tween, ".run() returns this" );147	assert.equal( tween.pos, jQuery.easing.swing( 0.1 ), "set .pos" );148	eased = 100 - ( jQuery.easing.swing( 0.1 ) * 100 );149	assert.equal( tween.now, eased, "Calculated tween" );150	assert.ok(151		easingSpy.calledWith( 0.1, 0.1 * testOptions.duration, 0, 1, testOptions.duration ),152		"...using jQuery.easing.linear with back-compat arguments"153	);154	assert.equal(155		parseFloat( testElement.style.height ).toFixed( 2 ),156		eased.toFixed( 2 ), "Set value"157	);158	tween.run( 1 );159	assert.equal( testElement.style.height, "0px", "Checking another value" );160	tween.run( 0 );161	assert.equal( testElement.style.height, "100px", "Can even go back in time" );162} );163QUnit.test( "jQuery.Tween - No duration", function( assert ) {164	assert.expect( 3 );165	var testObject = { test: 100 },166		testOptions = { duration: 0 },167		tween, easingSpy;168	tween = jQuery.Tween( testObject, testOptions, "test", 0 );169	easingSpy = this.sandbox.spy( jQuery.easing, "swing" );170	tween.run( 0.5 );171	assert.equal( tween.pos, 0.5, "set .pos correctly" );172	assert.equal( testObject.test, 50, "set value on object correctly" );173	assert.equal( easingSpy.callCount, 0, "didn't ease the value" );174} );175QUnit.test( "jQuery.Tween - step function option", function( assert ) {176	assert.expect( 4 );177	var testObject = { test: 100 },178		testOptions = { duration: 100, step: this.sandbox.spy() },179		tween, propHookSpy;180	propHookSpy = this.sandbox.spy( jQuery.Tween.propHooks._default, "set" );181	tween = jQuery.Tween( testObject, testOptions, "test", 0, "linear" );182	assert.equal( testOptions.step.callCount, 0, "didn't call step on create" );183	tween.run( 0.5 );184	assert.ok(185		testOptions.step.calledOn( testObject ),186		"Called step function in context of animated object"187	);188	assert.ok(189		testOptions.step.calledWith( 50, tween ),190		"Called step function with correct parameters"191	);192	assert.ok(193		testOptions.step.calledBefore( propHookSpy ),194		"Called step function before calling propHook.set"195	);196} );197QUnit.test( "jQuery.Tween - custom propHooks", function( assert ) {198	assert.expect( 3 );199	var testObject = {},200		testOptions = { duration: 100, step: this.sandbox.spy() },201		propHook = {202			get: sinon.stub().returns( 100 ),203			set: sinon.stub()204		},205		tween;206	jQuery.Tween.propHooks.testHooked = propHook;207	tween = jQuery.Tween( testObject, testOptions, "testHooked", 0, "linear" );208	assert.ok( propHook.get.calledWith( tween ), "called propHook.get on create" );209	assert.equal( tween.now, 100, "Used return value from propHook.get" );210	tween.run( 0.5 );211	assert.ok(212		propHook.set.calledWith( tween ),213		"Called propHook.set function with correct parameters"214	);215	delete jQuery.Tween.propHooks.testHooked;216} );217QUnit.test( "jQuery.Tween - custom propHooks - advanced values", function( assert ) {218	assert.expect( 5 );219	var testObject = {},220		testOptions = { duration: 100, step: this.sandbox.spy() },221		propHook = {222			get: sinon.stub().returns( [ 0, 0 ] ),223			set: sinon.spy()224		},225		tween;226	jQuery.Tween.propHooks.testHooked = propHook;227	tween = jQuery.Tween( testObject, testOptions, "testHooked", [ 1, 1 ], "linear" );228	assert.ok( propHook.get.calledWith( tween ), "called propHook.get on create" );229	assert.deepEqual( tween.start, [ 0, 0 ], "Used return value from get" );230	tween.run( 0.5 );231	// Some day this NaN assumption might change - perhaps add a "calc" helper to the hooks?232	assert.ok( isNaN( tween.now ), "Used return value from propHook.get" );233	assert.equal( tween.pos, 0.5, "But the eased percent is still available" );234	assert.ok(235		propHook.set.calledWith( tween ),236		"Called propHook.set function with correct parameters"237	);238	delete jQuery.Tween.propHooks.testHooked;239} );...