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我想用包含控件窗體函數的單獨formControle文件依賴項來測試ReactiveFormsControle。我需要使用observable來傳遞窗體控件並返回錯誤信息。但是當我試圖測試,我有這個錯誤:TypeError:無法讀取屬性'地圖'undefinedkarma測試:TypeError:無法讀取未定義的屬性'地圖'
任何人都可以幫助我請。
這是我的代碼:
這是我怎麼能叫的形式控制功能(進程信息):
ngAfterViewInit(): void {
// Watch for the blur event from any input element on the form.
let controlBlurs: Observable<any>[] = this.formInputElements
.map((formControl: ElementRef) => Observable.fromEvent(formControl.nativeElement, 'blur'));
// Merge the blur event observable with the valueChanges observable
Observable.merge(this.signUpForm.valueChanges, ...controlBlurs).debounceTime(1000).subscribe(value => {
this.displayeErrorMessage = this.formValidator.processMessages(this.signUpForm);
});
}
而processMessage功能:
processMessages(container : FormGroup) : {[key : string]: string}{
let messages = {};
for(let controlKey in container.controls){
if(container.controls.hasOwnProperty(controlKey)){
let c = container.controls[controlKey];
if(c instanceof FormGroup){
let childMessages = this.processMessages(c);
Object.assign(messages, childMessages);
}else {
if(this.validationErrorMessages[controlKey]){
messages[controlKey]='';
if((c.dirty || c.touched) && c.errors){
Object.keys(c.errors).map(messageKey =>{
if(this.validationErrorMessages[controlKey][messageKey]){
messages[controlKey] += this.validationErrorMessages[controlKey][messageKey] + ' '
}
})
}
}
}
}
}
return messages;
}
*此測試代碼,處理錯誤*
beforeEach(() => {
fixture = TestBed.createComponent(SignUpComponent);
component = fixture.componentInstance;
debugHelpblck = fixture.debugElement.queryAll(By.css('.help-block'));
component.ngOnInit();
component.ngAfterViewInit(); // this handle the error
fixture.detectChanges();
});
感謝您的回覆,karma chow這個消息:'TypeError:無法讀取未定義的屬性'過濾器',我想問題是Observable沒有被我的spec文件識別,但我不知道我該如何解決這個問題或者在spec中聲明observable文件。 –
是'formInputElements'數組還是可觀察的? – Sasxa
formInputElement是未定義的,這是它的聲明:'@ViewChildren(FormControlName,{read:ElementRef})formInputElements:ElementRef [];' –