I guess this code is the cause

Lines 26 to 85 in 0a3fe4f

    
           export function prepareSelectionInterceptor( 
        
             element: HTMLInputElement | HTMLTextAreaElement, 
        
           ) { 
        
             prepareInterceptor( 
        
               element, 
        
               'setSelectionRange', 
        
               function interceptorImpl( 
        
                 this: HTMLInputElement | HTMLTextAreaElement, 
        
                 start: number | Value | null, 
        
                 end: number | null, 
        
                 direction: 'forward' | 'backward' | 'none' = 'none', 
        
               ) { 
        
                 const isUI = start && typeof start === 'object' && start[UISelection] 
        
                 if (!isUI) { 
        
                   this[UISelection] = undefined 
        
                 } 
        
                 return { 
        
                   realArgs: [Number(start), end, direction] as [ 
        
                     number, 
        
                     number, 
        
                     typeof direction, 
        
                   ], 
        
                 } 
        
               }, 
        
             ) 
        
             prepareInterceptor( 
        
               element, 
        
               'selectionStart', 
        
               function interceptorImpl(this, v) { 
        
                 this[UISelection] = undefined 
        
                 return {realArgs: v} 
        
               }, 
        
             ) 
        
             prepareInterceptor( 
        
               element, 
        
               'selectionEnd', 
        
               function interceptorImpl(this, v) { 
        
                 this[UISelection] = undefined 
        
                 return {realArgs: v} 
        
               }, 
        
             ) 
        
             prepareInterceptor( 
        
               element, 
        
               'select', 
        
               function interceptorImpl(this: HTMLInputElement | HTMLTextAreaElement) { 
        
                 this[UISelection] = { 
        
                   anchorOffset: 0, 
        
                   focusOffset: getUIValue(element).length, 
        
                 } 
        
                 return {realArgs: [] as []} 
        
               }, 
        
             ) 
        
           }

	export function prepareSelectionInterceptor(
	element: HTMLInputElement \| HTMLTextAreaElement,
	) {
	prepareInterceptor(
	element,
	'setSelectionRange',
	function interceptorImpl(
	this: HTMLInputElement \| HTMLTextAreaElement,
	start: number \| Value \| null,
	end: number \| null,
	direction: 'forward' \| 'backward' \| 'none' = 'none',
	) {
	const isUI = start && typeof start === 'object' && start[UISelection]

	if (!isUI) {
	this[UISelection] = undefined
	}

	return {
	realArgs: [Number(start), end, direction] as [
	number,
	number,
	typeof direction,
	],
	}
	},
	)

	prepareInterceptor(
	element,
	'selectionStart',
	function interceptorImpl(this, v) {
	this[UISelection] = undefined

	return {realArgs: v}
	},
	)
	prepareInterceptor(
	element,
	'selectionEnd',
	function interceptorImpl(this, v) {
	this[UISelection] = undefined

	return {realArgs: v}
	},
	)

	prepareInterceptor(
	element,
	'select',
	function interceptorImpl(this: HTMLInputElement \| HTMLTextAreaElement) {
	this[UISelection] = {
	anchorOffset: 0,
	focusOffset: getUIValue(element).length,
	}

	return {realArgs: [] as []}
	},
	)
	}

jest.spyOn() does not work with type() in some cases #986

Description

Reproduction example

User-event version

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

`jest.spyOn()` does not work with `type()` in some cases #986