angular-docs-cn/modules/@angular/forms/test/reactive_integration_spec.ts

2078 lines
76 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Component, Directive, EventEmitter, Input, Output, Type, forwardRef} from '@angular/core';
import {ComponentFixture, TestBed, fakeAsync, tick} from '@angular/core/testing';
import {AbstractControl, ControlValueAccessor, FormArray, FormControl, FormGroup, FormGroupDirective, FormsModule, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NG_VALUE_ACCESSOR, NgControl, ReactiveFormsModule, Validator, Validators} from '@angular/forms';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {dispatchEvent} from '@angular/platform-browser/testing/browser_util';
export function main() {
describe('reactive forms integration tests', () => {
function initTest<T>(component: Type<T>, ...directives: Type<any>[]): ComponentFixture<T> {
TestBed.configureTestingModule(
{declarations: [component, ...directives], imports: [FormsModule, ReactiveFormsModule]});
return TestBed.createComponent(component);
}
describe('basic functionality', () => {
it('should work with single controls', () => {
const fixture = initTest(FormControlComp);
const control = new FormControl('old value');
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('old value');
input.nativeElement.value = 'updated value';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(control.value).toEqual('updated value');
});
it('should work with formGroups (model -> view)', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('loginValue')});
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('loginValue');
});
it('should add novalidate by default to form', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('loginValue')});
fixture.detectChanges();
const form = fixture.debugElement.query(By.css('form'));
expect(form.nativeElement.getAttribute('novalidate')).toEqual('');
});
it('work with formGroups (view -> model)', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('oldValue')});
fixture.componentInstance.form = form;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = 'updatedValue';
dispatchEvent(input.nativeElement, 'input');
expect(form.value).toEqual({'login': 'updatedValue'});
});
});
describe('rebound form groups', () => {
it('should update DOM elements initially', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('oldValue')});
fixture.detectChanges();
fixture.componentInstance.form = new FormGroup({'login': new FormControl('newValue')});
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('newValue');
});
it('should update model when UI changes', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('oldValue')});
fixture.detectChanges();
const newForm = new FormGroup({'login': new FormControl('newValue')});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = 'Nancy';
dispatchEvent(input.nativeElement, 'input');
fixture.detectChanges();
expect(newForm.value).toEqual({login: 'Nancy'});
newForm.setValue({login: 'Carson'});
fixture.detectChanges();
expect(input.nativeElement.value).toEqual('Carson');
});
it('should work with radio buttons when reusing control', () => {
const fixture = initTest(FormControlRadioButtons);
const food = new FormControl('chicken');
fixture.componentInstance.form =
new FormGroup({'food': food, 'drink': new FormControl('')});
fixture.detectChanges();
const newForm = new FormGroup({'food': food, 'drink': new FormControl('')});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
newForm.setValue({food: 'fish', drink: ''});
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toBe(false);
expect(inputs[1].nativeElement.checked).toBe(true);
});
it('should update nested form group model when UI changes', () => {
const fixture = initTest(NestedFormGroupComp);
fixture.componentInstance.form = new FormGroup(
{'signin': new FormGroup({'login': new FormControl(), 'password': new FormControl()})});
fixture.detectChanges();
const newForm = new FormGroup({
'signin': new FormGroup(
{'login': new FormControl('Nancy'), 'password': new FormControl('secret')})
});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.value).toEqual('Nancy');
expect(inputs[1].nativeElement.value).toEqual('secret');
inputs[0].nativeElement.value = 'Carson';
dispatchEvent(inputs[0].nativeElement, 'input');
fixture.detectChanges();
expect(newForm.value).toEqual({signin: {login: 'Carson', password: 'secret'}});
newForm.setValue({signin: {login: 'Bess', password: 'otherpass'}});
fixture.detectChanges();
expect(inputs[0].nativeElement.value).toEqual('Bess');
});
it('should pick up dir validators from form controls', () => {
const fixture = initTest(LoginIsEmptyWrapper, LoginIsEmptyValidator);
const form = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = form;
fixture.detectChanges();
expect(form.get('login').errors).toEqual({required: true});
const newForm = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
expect(newForm.get('login').errors).toEqual({required: true});
});
it('should pick up dir validators from nested form groups', () => {
const fixture = initTest(NestedFormGroupComp, LoginIsEmptyValidator);
const form = new FormGroup({
'signin':
new FormGroup({'login': new FormControl(''), 'password': new FormControl('')})
});
fixture.componentInstance.form = form;
fixture.detectChanges();
expect(form.get('signin').valid).toBe(false);
const newForm = new FormGroup({
'signin':
new FormGroup({'login': new FormControl(''), 'password': new FormControl('')})
});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
expect(form.get('signin').valid).toBe(false);
});
it('should strip named controls that are not found', () => {
const fixture = initTest(NestedFormGroupComp, LoginIsEmptyValidator);
const form = new FormGroup({
'signin':
new FormGroup({'login': new FormControl(''), 'password': new FormControl('')})
});
fixture.componentInstance.form = form;
fixture.detectChanges();
form.addControl('email', new FormControl('email'));
fixture.detectChanges();
let emailInput = fixture.debugElement.query(By.css('[formControlName="email"]'));
expect(emailInput.nativeElement.value).toEqual('email');
const newForm = new FormGroup({
'signin':
new FormGroup({'login': new FormControl(''), 'password': new FormControl('')})
});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
emailInput = fixture.debugElement.query(By.css('[formControlName="email"]'));
expect(emailInput).toBe(null);
});
it('should strip array controls that are not found', () => {
const fixture = initTest(FormArrayComp);
const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
const form = new FormGroup({cities: cityArray});
fixture.componentInstance.form = form;
fixture.componentInstance.cityArray = cityArray;
fixture.detectChanges();
let inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[2]).not.toBeDefined();
cityArray.push(new FormControl('LA'));
fixture.detectChanges();
inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[2]).toBeDefined();
const newArr = new FormArray([new FormControl('SF'), new FormControl('NY')]);
const newForm = new FormGroup({cities: newArr});
fixture.componentInstance.form = newForm;
fixture.componentInstance.cityArray = newArr;
fixture.detectChanges();
inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[2]).not.toBeDefined();
});
describe('nested control rebinding', () => {
it('should attach dir to control when leaf control changes', () => {
const form = new FormGroup({'login': new FormControl('oldValue')});
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = form;
fixture.detectChanges();
form.removeControl('login');
form.addControl('login', new FormControl('newValue'));
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('newValue');
input.nativeElement.value = 'user input';
dispatchEvent(input.nativeElement, 'input');
fixture.detectChanges();
expect(form.value).toEqual({login: 'user input'});
form.setValue({login: 'Carson'});
fixture.detectChanges();
expect(input.nativeElement.value).toEqual('Carson');
});
it('should attach dirs to all child controls when group control changes', () => {
const fixture = initTest(NestedFormGroupComp, LoginIsEmptyValidator);
const form = new FormGroup({
signin: new FormGroup(
{login: new FormControl('oldLogin'), password: new FormControl('oldPassword')})
});
fixture.componentInstance.form = form;
fixture.detectChanges();
form.removeControl('signin');
form.addControl(
'signin',
new FormGroup(
{login: new FormControl('newLogin'), password: new FormControl('newPassword')}));
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.value).toEqual('newLogin');
expect(inputs[1].nativeElement.value).toEqual('newPassword');
inputs[0].nativeElement.value = 'user input';
dispatchEvent(inputs[0].nativeElement, 'input');
fixture.detectChanges();
expect(form.value).toEqual({signin: {login: 'user input', password: 'newPassword'}});
form.setValue({signin: {login: 'Carson', password: 'Drew'}});
fixture.detectChanges();
expect(inputs[0].nativeElement.value).toEqual('Carson');
expect(inputs[1].nativeElement.value).toEqual('Drew');
});
it('should attach dirs to all present child controls when array control changes', () => {
const fixture = initTest(FormArrayComp);
const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
const form = new FormGroup({cities: cityArray});
fixture.componentInstance.form = form;
fixture.componentInstance.cityArray = cityArray;
fixture.detectChanges();
form.removeControl('cities');
form.addControl('cities', new FormArray([new FormControl('LA')]));
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('LA');
input.nativeElement.value = 'MTV';
dispatchEvent(input.nativeElement, 'input');
fixture.detectChanges();
expect(form.value).toEqual({cities: ['MTV']});
form.setValue({cities: ['LA']});
fixture.detectChanges();
expect(input.nativeElement.value).toEqual('LA');
});
});
});
describe('form arrays', () => {
it('should support form arrays', () => {
const fixture = initTest(FormArrayComp);
const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
const form = new FormGroup({cities: cityArray});
fixture.componentInstance.form = form;
fixture.componentInstance.cityArray = cityArray;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
// model -> view
expect(inputs[0].nativeElement.value).toEqual('SF');
expect(inputs[1].nativeElement.value).toEqual('NY');
expect(form.value).toEqual({cities: ['SF', 'NY']});
inputs[0].nativeElement.value = 'LA';
dispatchEvent(inputs[0].nativeElement, 'input');
fixture.detectChanges();
// view -> model
expect(form.value).toEqual({cities: ['LA', 'NY']});
});
it('should support pushing new controls to form arrays', () => {
const fixture = initTest(FormArrayComp);
const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
const form = new FormGroup({cities: cityArray});
fixture.componentInstance.form = form;
fixture.componentInstance.cityArray = cityArray;
fixture.detectChanges();
cityArray.push(new FormControl('LA'));
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[2].nativeElement.value).toEqual('LA');
expect(form.value).toEqual({cities: ['SF', 'NY', 'LA']});
});
it('should support form groups nested in form arrays', () => {
const fixture = initTest(FormArrayNestedGroup);
const cityArray = new FormArray([
new FormGroup({town: new FormControl('SF'), state: new FormControl('CA')}),
new FormGroup({town: new FormControl('NY'), state: new FormControl('NY')})
]);
const form = new FormGroup({cities: cityArray});
fixture.componentInstance.form = form;
fixture.componentInstance.cityArray = cityArray;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.value).toEqual('SF');
expect(inputs[1].nativeElement.value).toEqual('CA');
expect(inputs[2].nativeElement.value).toEqual('NY');
expect(inputs[3].nativeElement.value).toEqual('NY');
expect(form.value).toEqual({
cities: [{town: 'SF', state: 'CA'}, {town: 'NY', state: 'NY'}]
});
inputs[0].nativeElement.value = 'LA';
dispatchEvent(inputs[0].nativeElement, 'input');
fixture.detectChanges();
expect(form.value).toEqual({
cities: [{town: 'LA', state: 'CA'}, {town: 'NY', state: 'NY'}]
});
});
});
describe('programmatic changes', () => {
it('should update the value in the DOM when setValue() is called', () => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('oldValue');
const form = new FormGroup({'login': login});
fixture.componentInstance.form = form;
fixture.detectChanges();
login.setValue('newValue');
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('newValue');
});
describe('disabled controls', () => {
it('should add disabled attribute to an individual control when instantiated as disabled',
() => {
const fixture = initTest(FormControlComp);
const control = new FormControl({value: 'some value', disabled: true});
fixture.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.disabled).toBe(true);
control.enable();
fixture.detectChanges();
expect(input.nativeElement.disabled).toBe(false);
});
it('should add disabled attribute to formControlName when instantiated as disabled', () => {
const fixture = initTest(FormGroupComp);
const control = new FormControl({value: 'some value', disabled: true});
fixture.componentInstance.form = new FormGroup({login: control});
fixture.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.disabled).toBe(true);
control.enable();
fixture.detectChanges();
expect(input.nativeElement.disabled).toBe(false);
});
it('should add disabled attribute to an individual control when disable() is called',
() => {
const fixture = initTest(FormControlComp);
const control = new FormControl('some value');
fixture.componentInstance.control = control;
fixture.detectChanges();
control.disable();
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.disabled).toBe(true);
control.enable();
fixture.detectChanges();
expect(input.nativeElement.disabled).toBe(false);
});
it('should add disabled attribute to child controls when disable() is called on group',
() => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('login')});
fixture.componentInstance.form = form;
fixture.detectChanges();
form.disable();
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.disabled).toBe(true);
form.enable();
fixture.detectChanges();
expect(inputs[0].nativeElement.disabled).toBe(false);
});
it('should not add disabled attribute to custom controls when disable() is called', () => {
const fixture = initTest(MyInputForm, MyInput);
const control = new FormControl('some value');
fixture.componentInstance.form = new FormGroup({login: control});
fixture.detectChanges();
control.disable();
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('my-input'));
expect(input.nativeElement.getAttribute('disabled')).toBe(null);
});
});
});
describe('user input', () => {
it('should mark controls as touched after interacting with the DOM control', () => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('oldValue');
const form = new FormGroup({'login': login});
fixture.componentInstance.form = form;
fixture.detectChanges();
const loginEl = fixture.debugElement.query(By.css('input'));
expect(login.touched).toBe(false);
dispatchEvent(loginEl.nativeElement, 'blur');
expect(login.touched).toBe(true);
});
});
describe('submit and reset events', () => {
it('should emit ngSubmit event with the original submit event on submit', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('loginValue')});
fixture.componentInstance.event = null;
fixture.detectChanges();
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.event.type).toEqual('submit');
});
it('should mark formGroup as submitted on submit event', () => {
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('loginValue')});
fixture.detectChanges();
const formGroupDir = fixture.debugElement.children[0].injector.get(FormGroupDirective);
expect(formGroupDir.submitted).toBe(false);
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(formGroupDir.submitted).toEqual(true);
});
it('should set value in UI when form resets to that value programmatically', () => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('some value');
const form = new FormGroup({'login': login});
fixture.componentInstance.form = form;
fixture.detectChanges();
const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
expect(loginEl.value).toBe('some value');
form.reset({'login': 'reset value'});
expect(loginEl.value).toBe('reset value');
});
it('should clear value in UI when form resets programmatically', () => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('some value');
const form = new FormGroup({'login': login});
fixture.componentInstance.form = form;
fixture.detectChanges();
const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
expect(loginEl.value).toBe('some value');
form.reset();
expect(loginEl.value).toBe('');
});
});
describe('value changes and status changes', () => {
it('should mark controls as dirty before emitting a value change event', () => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('oldValue');
fixture.componentInstance.form = new FormGroup({'login': login});
fixture.detectChanges();
login.valueChanges.subscribe(() => { expect(login.dirty).toBe(true); });
const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
loginEl.value = 'newValue';
dispatchEvent(loginEl, 'input');
});
it('should mark control as pristine before emitting a value change event when resetting ',
() => {
const fixture = initTest(FormGroupComp);
const login = new FormControl('oldValue');
const form = new FormGroup({'login': login});
fixture.componentInstance.form = form;
fixture.detectChanges();
const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
loginEl.value = 'newValue';
dispatchEvent(loginEl, 'input');
expect(login.pristine).toBe(false);
login.valueChanges.subscribe(() => { expect(login.pristine).toBe(true); });
form.reset();
});
});
describe('setting status classes', () => {
it('should work with single fields', () => {
const fixture = initTest(FormControlComp);
const control = new FormControl('', Validators.required);
fixture.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
it('should work with single fields and async validators', fakeAsync(() => {
const fixture = initTest(FormControlComp);
const control = new FormControl('', null, uniqLoginAsyncValidator('good'));
fixture.debugElement.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-pending', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-pending', 'ng-pristine', 'ng-touched']);
input.value = 'good';
dispatchEvent(input, 'input');
tick();
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
}));
it('should work with single fields that combines async and sync validators', fakeAsync(() => {
const fixture = initTest(FormControlComp);
const control =
new FormControl('', Validators.required, uniqLoginAsyncValidator('good'));
fixture.debugElement.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'bad';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-pending', 'ng-touched']);
tick();
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-invalid', 'ng-touched']);
input.value = 'good';
dispatchEvent(input, 'input');
tick();
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
}));
it('should work with single fields in parent forms', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('', Validators.required)});
fixture.componentInstance.form = form;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
it('should work with formGroup', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('', Validators.required)});
fixture.componentInstance.form = form;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
expect(sortedClassList(formEl)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(formEl)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(formEl)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
});
describe('value accessors', () => {
it('should support <input> without type', () => {
TestBed.overrideComponent(
FormControlComp, {set: {template: `<input [formControl]="control">`}});
const fixture = initTest(FormControlComp);
const control = new FormControl('old');
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('old');
input.nativeElement.value = 'new';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(control.value).toEqual('new');
});
it('should support <input type=text>', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('old')});
fixture.componentInstance.form = form;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('old');
input.nativeElement.value = 'new';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(form.value).toEqual({'login': 'new'});
});
it('should ignore the change event for <input type=text>', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('oldValue')});
fixture.componentInstance.form = form;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
form.valueChanges.subscribe({next: (value) => { throw 'Should not happen'; }});
input.nativeElement.value = 'updatedValue';
dispatchEvent(input.nativeElement, 'change');
});
it('should support <textarea>', () => {
TestBed.overrideComponent(
FormControlComp, {set: {template: `<textarea [formControl]="control"></textarea>`}});
const fixture = initTest(FormControlComp);
const control = new FormControl('old');
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const textarea = fixture.debugElement.query(By.css('textarea'));
expect(textarea.nativeElement.value).toEqual('old');
textarea.nativeElement.value = 'new';
dispatchEvent(textarea.nativeElement, 'input');
// view -> model
expect(control.value).toEqual('new');
});
it('should support <type=checkbox>', () => {
TestBed.overrideComponent(
FormControlComp, {set: {template: `<input type="checkbox" [formControl]="control">`}});
const fixture = initTest(FormControlComp);
const control = new FormControl(true);
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.checked).toBe(true);
input.nativeElement.checked = false;
dispatchEvent(input.nativeElement, 'change');
// view -> model
expect(control.value).toBe(false);
});
it('should support <select>', () => {
const fixture = initTest(FormControlNameSelect);
fixture.detectChanges();
// model -> view
const select = fixture.debugElement.query(By.css('select'));
const sfOption = fixture.debugElement.query(By.css('option'));
expect(select.nativeElement.value).toEqual('SF');
expect(sfOption.nativeElement.selected).toBe(true);
select.nativeElement.value = 'NY';
dispatchEvent(select.nativeElement, 'change');
fixture.detectChanges();
// view -> model
expect(sfOption.nativeElement.selected).toBe(false);
expect(fixture.componentInstance.form.value).toEqual({'city': 'NY'});
});
describe('should support <type=number>', () => {
it('with basic use case', () => {
const fixture = initTest(FormControlNumberInput);
const control = new FormControl(10);
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('10');
input.nativeElement.value = '20';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(control.value).toEqual(20);
});
it('when value is cleared in the UI', () => {
const fixture = initTest(FormControlNumberInput);
const control = new FormControl(10, Validators.required);
fixture.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = '';
dispatchEvent(input.nativeElement, 'input');
expect(control.valid).toBe(false);
expect(control.value).toEqual(null);
input.nativeElement.value = '0';
dispatchEvent(input.nativeElement, 'input');
expect(control.valid).toBe(true);
expect(control.value).toEqual(0);
});
it('when value is cleared programmatically', () => {
const fixture = initTest(FormControlNumberInput);
const control = new FormControl(10);
fixture.componentInstance.control = control;
fixture.detectChanges();
control.setValue(null);
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('');
});
});
describe('should support <type=radio>', () => {
it('should support basic functionality', () => {
const fixture = initTest(FormControlRadioButtons);
const form =
new FormGroup({'food': new FormControl('fish'), 'drink': new FormControl('sprite')});
fixture.componentInstance.form = form;
fixture.detectChanges();
// model -> view
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
dispatchEvent(inputs[0].nativeElement, 'change');
fixture.detectChanges();
// view -> model
expect(form.get('food').value).toEqual('chicken');
expect(inputs[1].nativeElement.checked).toEqual(false);
form.get('food').setValue('fish');
fixture.detectChanges();
// programmatic change -> view
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
});
it('should support an initial undefined value', () => {
const fixture = initTest(FormControlRadioButtons);
const form = new FormGroup({'food': new FormControl(), 'drink': new FormControl()});
fixture.componentInstance.form = form;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
});
it('should reset properly', () => {
const fixture = initTest(FormControlRadioButtons);
const form =
new FormGroup({'food': new FormControl('fish'), 'drink': new FormControl('sprite')});
fixture.componentInstance.form = form;
fixture.detectChanges();
form.reset();
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
});
it('should set value to null and undefined properly', () => {
const fixture = initTest(FormControlRadioButtons);
const form = new FormGroup(
{'food': new FormControl('chicken'), 'drink': new FormControl('sprite')});
fixture.componentInstance.form = form;
fixture.detectChanges();
form.get('food').setValue(null);
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
form.get('food').setValue('chicken');
fixture.detectChanges();
form.get('food').setValue(undefined);
fixture.detectChanges();
expect(inputs[0].nativeElement.checked).toEqual(false);
});
it('should use formControlName to group radio buttons when name is absent', () => {
const fixture = initTest(FormControlRadioButtons);
const foodCtrl = new FormControl('fish');
const drinkCtrl = new FormControl('sprite');
fixture.componentInstance.form = new FormGroup({'food': foodCtrl, 'drink': drinkCtrl});
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
dispatchEvent(inputs[0].nativeElement, 'change');
inputs[0].nativeElement.checked = true;
fixture.detectChanges();
const value = fixture.componentInstance.form.value;
expect(value.food).toEqual('chicken');
expect(inputs[1].nativeElement.checked).toEqual(false);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
drinkCtrl.setValue('cola');
fixture.detectChanges();
expect(inputs[0].nativeElement.checked).toEqual(true);
expect(inputs[1].nativeElement.checked).toEqual(false);
expect(inputs[2].nativeElement.checked).toEqual(true);
expect(inputs[3].nativeElement.checked).toEqual(false);
});
it('should support removing controls from <type=radio>', () => {
const fixture = initTest(FormControlRadioButtons);
const showRadio = new FormControl('yes');
const form =
new FormGroup({'food': new FormControl('fish'), 'drink': new FormControl('sprite')});
fixture.componentInstance.form = form;
fixture.componentInstance.showRadio = showRadio;
showRadio.valueChanges.subscribe((change) => {
(change === 'yes') ? form.addControl('food', new FormControl('fish')) :
form.removeControl('food');
});
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('[value="no"]'));
dispatchEvent(input.nativeElement, 'change');
fixture.detectChanges();
expect(form.value).toEqual({drink: 'sprite'});
});
it('should differentiate controls on different levels with the same name', () => {
TestBed.overrideComponent(FormControlRadioButtons, {
set: {
template: `
<div [formGroup]="form">
<input type="radio" formControlName="food" value="chicken">
<input type="radio" formControlName="food" value="fish">
<div formGroupName="nested">
<input type="radio" formControlName="food" value="chicken">
<input type="radio" formControlName="food" value="fish">
</div>
</div>
`
}
});
const fixture = initTest(FormControlRadioButtons);
const form = new FormGroup({
food: new FormControl('fish'),
nested: new FormGroup({food: new FormControl('fish')})
});
fixture.componentInstance.form = form;
fixture.detectChanges();
// model -> view
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
dispatchEvent(inputs[0].nativeElement, 'change');
fixture.detectChanges();
// view -> model
expect(form.get('food').value).toEqual('chicken');
expect(form.get('nested.food').value).toEqual('fish');
expect(inputs[1].nativeElement.checked).toEqual(false);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
});
it('should disable all radio buttons when disable() is called', () => {
const fixture = initTest(FormControlRadioButtons);
const form =
new FormGroup({food: new FormControl('fish'), drink: new FormControl('cola')});
fixture.componentInstance.form = form;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.disabled).toEqual(false);
expect(inputs[1].nativeElement.disabled).toEqual(false);
expect(inputs[2].nativeElement.disabled).toEqual(false);
expect(inputs[3].nativeElement.disabled).toEqual(false);
form.get('food').disable();
expect(inputs[0].nativeElement.disabled).toEqual(true);
expect(inputs[1].nativeElement.disabled).toEqual(true);
expect(inputs[2].nativeElement.disabled).toEqual(false);
expect(inputs[3].nativeElement.disabled).toEqual(false);
form.disable();
expect(inputs[0].nativeElement.disabled).toEqual(true);
expect(inputs[1].nativeElement.disabled).toEqual(true);
expect(inputs[2].nativeElement.disabled).toEqual(true);
expect(inputs[3].nativeElement.disabled).toEqual(true);
form.enable();
expect(inputs[0].nativeElement.disabled).toEqual(false);
expect(inputs[1].nativeElement.disabled).toEqual(false);
expect(inputs[2].nativeElement.disabled).toEqual(false);
expect(inputs[3].nativeElement.disabled).toEqual(false);
});
it('should disable all radio buttons when initially disabled', () => {
const fixture = initTest(FormControlRadioButtons);
const form = new FormGroup({
food: new FormControl({value: 'fish', disabled: true}),
drink: new FormControl('cola')
});
fixture.componentInstance.form = form;
fixture.detectChanges();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.disabled).toEqual(true);
expect(inputs[1].nativeElement.disabled).toEqual(true);
expect(inputs[2].nativeElement.disabled).toEqual(false);
expect(inputs[3].nativeElement.disabled).toEqual(false);
});
});
describe('should support <type=range>', () => {
it('with basic use case', () => {
const fixture = initTest(FormControlRangeInput);
const control = new FormControl(10);
fixture.componentInstance.control = control;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('10');
input.nativeElement.value = '20';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(control.value).toEqual(20);
});
it('when value is cleared in the UI', () => {
const fixture = initTest(FormControlNumberInput);
const control = new FormControl(10, Validators.required);
fixture.componentInstance.control = control;
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = '';
dispatchEvent(input.nativeElement, 'input');
expect(control.valid).toBe(false);
expect(control.value).toEqual(null);
input.nativeElement.value = '0';
dispatchEvent(input.nativeElement, 'input');
expect(control.valid).toBe(true);
expect(control.value).toEqual(0);
});
it('when value is cleared programmatically', () => {
const fixture = initTest(FormControlNumberInput);
const control = new FormControl(10);
fixture.componentInstance.control = control;
fixture.detectChanges();
control.setValue(null);
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('');
});
});
describe('custom value accessors', () => {
it('should support basic functionality', () => {
const fixture = initTest(WrappedValueForm, WrappedValue);
const form = new FormGroup({'login': new FormControl('aa')});
fixture.componentInstance.form = form;
fixture.detectChanges();
// model -> view
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toEqual('!aa!');
input.nativeElement.value = '!bb!';
dispatchEvent(input.nativeElement, 'input');
// view -> model
expect(form.value).toEqual({'login': 'bb'});
// custom validator
expect(form.get('login').errors).toEqual({'err': true});
form.setValue({login: 'expected'});
expect(form.get('login').errors).toEqual(null);
});
it('should support non builtin input elements that fire a change event without a \'target\' property',
() => {
const fixture = initTest(MyInputForm, MyInput);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('aa')});
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('my-input'));
expect(input.componentInstance.value).toEqual('!aa!');
input.componentInstance.value = '!bb!';
input.componentInstance.onInput.subscribe((value: any) => {
expect(fixture.componentInstance.form.value).toEqual({'login': 'bb'});
});
input.componentInstance.dispatchChangeEvent();
});
it('should support custom accessors without setDisabledState - formControlName', () => {
const fixture = initTest(WrappedValueForm, WrappedValue);
fixture.componentInstance.form = new FormGroup({
'login': new FormControl({value: 'aa', disabled: true}),
});
fixture.detectChanges();
expect(fixture.componentInstance.form.status).toEqual('DISABLED');
expect(fixture.componentInstance.form.get('login').status).toEqual('DISABLED');
});
it('should support custom accessors without setDisabledState - formControlDirective',
() => {
TestBed.overrideComponent(
FormControlComp,
{set: {template: `<input type="text" [formControl]="control" wrapped-value>`}});
const fixture = initTest(FormControlComp);
fixture.componentInstance.control = new FormControl({value: 'aa', disabled: true});
fixture.detectChanges();
expect(fixture.componentInstance.control.status).toEqual('DISABLED');
});
});
});
describe('ngModel interactions', () => {
it('should support ngModel for complex forms', fakeAsync(() => {
const fixture = initTest(FormGroupNgModel);
fixture.componentInstance.form = new FormGroup({'login': new FormControl('')});
fixture.componentInstance.login = 'oldValue';
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(input.value).toEqual('oldValue');
input.value = 'updatedValue';
dispatchEvent(input, 'input');
tick();
expect(fixture.componentInstance.login).toEqual('updatedValue');
}));
it('should support ngModel for single fields', fakeAsync(() => {
const fixture = initTest(FormControlNgModel);
fixture.componentInstance.control = new FormControl('');
fixture.componentInstance.login = 'oldValue';
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(input.value).toEqual('oldValue');
input.value = 'updatedValue';
dispatchEvent(input, 'input');
tick();
expect(fixture.componentInstance.login).toEqual('updatedValue');
}));
it('should not update the view when the value initially came from the view', fakeAsync(() => {
const fixture = initTest(FormControlNgModel);
fixture.componentInstance.control = new FormControl('');
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'aa';
input.setSelectionRange(1, 2);
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
// selection start has not changed because we did not reset the value
expect(input.selectionStart).toEqual(1);
}));
});
describe('validations', () => {
it('required validator should validate checkbox', () => {
const fixture = initTest(FormControlCheckboxRequiredValidator);
const control = new FormControl(false, Validators.requiredTrue);
fixture.componentInstance.control = control;
fixture.detectChanges();
const checkbox = fixture.debugElement.query(By.css('input'));
expect(checkbox.nativeElement.checked).toBe(false);
expect(control.hasError('required')).toEqual(true);
checkbox.nativeElement.checked = true;
dispatchEvent(checkbox.nativeElement, 'change');
fixture.detectChanges();
expect(checkbox.nativeElement.checked).toBe(true);
expect(control.hasError('required')).toEqual(false);
});
it('should use sync validators defined in html', () => {
const fixture = initTest(LoginIsEmptyWrapper, LoginIsEmptyValidator);
const form = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = form;
fixture.detectChanges();
const required = fixture.debugElement.query(By.css('[required]'));
const minLength = fixture.debugElement.query(By.css('[minlength]'));
const maxLength = fixture.debugElement.query(By.css('[maxlength]'));
const pattern = fixture.debugElement.query(By.css('[pattern]'));
required.nativeElement.value = '';
minLength.nativeElement.value = '1';
maxLength.nativeElement.value = '1234';
pattern.nativeElement.value = '12';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.hasError('required', ['login'])).toEqual(true);
expect(form.hasError('minlength', ['min'])).toEqual(true);
expect(form.hasError('maxlength', ['max'])).toEqual(true);
expect(form.hasError('pattern', ['pattern'])).toEqual(true);
expect(form.hasError('loginIsEmpty')).toEqual(true);
required.nativeElement.value = '1';
minLength.nativeElement.value = '123';
maxLength.nativeElement.value = '123';
pattern.nativeElement.value = '123';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.valid).toEqual(true);
});
it('should use sync validators using bindings', () => {
const fixture = initTest(ValidationBindingsForm);
const form = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = form;
fixture.componentInstance.required = true;
fixture.componentInstance.minLen = 3;
fixture.componentInstance.maxLen = 3;
fixture.componentInstance.pattern = '.{3,}';
fixture.detectChanges();
const required = fixture.debugElement.query(By.css('[name=required]'));
const minLength = fixture.debugElement.query(By.css('[name=minlength]'));
const maxLength = fixture.debugElement.query(By.css('[name=maxlength]'));
const pattern = fixture.debugElement.query(By.css('[name=pattern]'));
required.nativeElement.value = '';
minLength.nativeElement.value = '1';
maxLength.nativeElement.value = '1234';
pattern.nativeElement.value = '12';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.hasError('required', ['login'])).toEqual(true);
expect(form.hasError('minlength', ['min'])).toEqual(true);
expect(form.hasError('maxlength', ['max'])).toEqual(true);
expect(form.hasError('pattern', ['pattern'])).toEqual(true);
required.nativeElement.value = '1';
minLength.nativeElement.value = '123';
maxLength.nativeElement.value = '123';
pattern.nativeElement.value = '123';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.valid).toEqual(true);
});
it('changes on bound properties should change the validation state of the form', () => {
const fixture = initTest(ValidationBindingsForm);
const form = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = form;
fixture.detectChanges();
const required = fixture.debugElement.query(By.css('[name=required]'));
const minLength = fixture.debugElement.query(By.css('[name=minlength]'));
const maxLength = fixture.debugElement.query(By.css('[name=maxlength]'));
const pattern = fixture.debugElement.query(By.css('[name=pattern]'));
required.nativeElement.value = '';
minLength.nativeElement.value = '1';
maxLength.nativeElement.value = '1234';
pattern.nativeElement.value = '12';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.hasError('required', ['login'])).toEqual(false);
expect(form.hasError('minlength', ['min'])).toEqual(false);
expect(form.hasError('maxlength', ['max'])).toEqual(false);
expect(form.hasError('pattern', ['pattern'])).toEqual(false);
expect(form.valid).toEqual(true);
fixture.componentInstance.required = true;
fixture.componentInstance.minLen = 3;
fixture.componentInstance.maxLen = 3;
fixture.componentInstance.pattern = '.{3,}';
fixture.detectChanges();
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.hasError('required', ['login'])).toEqual(true);
expect(form.hasError('minlength', ['min'])).toEqual(true);
expect(form.hasError('maxlength', ['max'])).toEqual(true);
expect(form.hasError('pattern', ['pattern'])).toEqual(true);
expect(form.valid).toEqual(false);
expect(required.nativeElement.getAttribute('required')).toEqual('');
expect(fixture.componentInstance.minLen.toString())
.toEqual(minLength.nativeElement.getAttribute('minlength'));
expect(fixture.componentInstance.maxLen.toString())
.toEqual(maxLength.nativeElement.getAttribute('maxlength'));
expect(fixture.componentInstance.pattern.toString())
.toEqual(pattern.nativeElement.getAttribute('pattern'));
fixture.componentInstance.required = false;
fixture.componentInstance.minLen = null;
fixture.componentInstance.maxLen = null;
fixture.componentInstance.pattern = null;
fixture.detectChanges();
expect(form.hasError('required', ['login'])).toEqual(false);
expect(form.hasError('minlength', ['min'])).toEqual(false);
expect(form.hasError('maxlength', ['max'])).toEqual(false);
expect(form.hasError('pattern', ['pattern'])).toEqual(false);
expect(form.valid).toEqual(true);
expect(required.nativeElement.getAttribute('required')).toEqual(null);
expect(required.nativeElement.getAttribute('minlength')).toEqual(null);
expect(required.nativeElement.getAttribute('maxlength')).toEqual(null);
expect(required.nativeElement.getAttribute('pattern')).toEqual(null);
});
it('should support rebound controls with rebound validators', () => {
const fixture = initTest(ValidationBindingsForm);
const form = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = form;
fixture.componentInstance.required = true;
fixture.componentInstance.minLen = 3;
fixture.componentInstance.maxLen = 3;
fixture.componentInstance.pattern = '.{3,}';
fixture.detectChanges();
const newForm = new FormGroup({
'login': new FormControl(''),
'min': new FormControl(''),
'max': new FormControl(''),
'pattern': new FormControl('')
});
fixture.componentInstance.form = newForm;
fixture.detectChanges();
fixture.componentInstance.required = false;
fixture.componentInstance.minLen = null;
fixture.componentInstance.maxLen = null;
fixture.componentInstance.pattern = null;
fixture.detectChanges();
expect(newForm.hasError('required', ['login'])).toEqual(false);
expect(newForm.hasError('minlength', ['min'])).toEqual(false);
expect(newForm.hasError('maxlength', ['max'])).toEqual(false);
expect(newForm.hasError('pattern', ['pattern'])).toEqual(false);
expect(newForm.valid).toEqual(true);
});
it('should use async validators defined in the html', fakeAsync(() => {
const fixture = initTest(UniqLoginWrapper, UniqLoginValidator);
const form = new FormGroup({'login': new FormControl('')});
tick();
fixture.componentInstance.form = form;
fixture.detectChanges();
expect(form.pending).toEqual(true);
tick(100);
expect(form.hasError('uniqLogin', ['login'])).toEqual(true);
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = 'expected';
dispatchEvent(input.nativeElement, 'input');
tick(100);
expect(form.valid).toEqual(true);
}));
it('should use sync validators defined in the model', () => {
const fixture = initTest(FormGroupComp);
const form = new FormGroup({'login': new FormControl('aa', Validators.required)});
fixture.componentInstance.form = form;
fixture.detectChanges();
expect(form.valid).toEqual(true);
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = '';
dispatchEvent(input.nativeElement, 'input');
expect(form.valid).toEqual(false);
});
it('should use async validators defined in the model', fakeAsync(() => {
const fixture = initTest(FormGroupComp);
const control =
new FormControl('', Validators.required, uniqLoginAsyncValidator('expected'));
const form = new FormGroup({'login': control});
fixture.componentInstance.form = form;
fixture.detectChanges();
tick();
expect(form.hasError('required', ['login'])).toEqual(true);
const input = fixture.debugElement.query(By.css('input'));
input.nativeElement.value = 'wrong value';
dispatchEvent(input.nativeElement, 'input');
expect(form.pending).toEqual(true);
tick();
expect(form.hasError('uniqLogin', ['login'])).toEqual(true);
input.nativeElement.value = 'expected';
dispatchEvent(input.nativeElement, 'input');
tick();
expect(form.valid).toEqual(true);
}));
});
describe('errors', () => {
it('should throw if a form isn\'t passed into formGroup', () => {
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(new RegExp(`formGroup expects a FormGroup instance`));
});
it('should throw if formControlName is used without a control container', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<input type="text" formControlName="login">
`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formControlName must be used with a parent formGroup directive`));
});
it('should throw if formControlName is used with NgForm', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<form>
<input type="text" formControlName="login">
</form>
`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formControlName must be used with a parent formGroup directive.`));
});
it('should throw if formControlName is used with NgModelGroup', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<form>
<div ngModelGroup="parent">
<input type="text" formControlName="login">
</div>
</form>
`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formControlName cannot be used with an ngModelGroup parent.`));
});
it('should throw if formGroupName is used without a control container', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div formGroupName="person">
<input type="text" formControlName="login">
</div>
`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formGroupName must be used with a parent formGroup directive`));
});
it('should throw if formGroupName is used with NgForm', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<form>
<div formGroupName="person">
<input type="text" formControlName="login">
</div>
</form>
`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formGroupName must be used with a parent formGroup directive.`));
});
it('should throw if formArrayName is used without a control container', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div formArrayName="cities">
<input type="text" formControlName="login">
</div>`
}
});
const fixture = initTest(FormGroupComp);
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`formArrayName must be used with a parent formGroup directive`));
});
it('should throw if ngModel is used alone under formGroup', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div [formGroup]="myGroup">
<input type="text" [(ngModel)]="data">
</div>
`
}
});
const fixture = initTest(FormGroupComp);
fixture.componentInstance.myGroup = new FormGroup({});
expect(() => fixture.detectChanges())
.toThrowError(new RegExp(
`ngModel cannot be used to register form controls with a parent formGroup directive.`));
});
it('should not throw if ngModel is used alone under formGroup with standalone: true', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div [formGroup]="myGroup">
<input type="text" [(ngModel)]="data" [ngModelOptions]="{standalone: true}">
</div>
`
}
});
const fixture = initTest(FormGroupComp);
fixture.componentInstance.myGroup = new FormGroup({});
expect(() => fixture.detectChanges()).not.toThrowError();
});
it('should throw if ngModel is used alone with formGroupName', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div [formGroup]="myGroup">
<div formGroupName="person">
<input type="text" [(ngModel)]="data">
</div>
</div>
`
}
});
const fixture = initTest(FormGroupComp);
const myGroup = new FormGroup({person: new FormGroup({})});
fixture.componentInstance.myGroup = new FormGroup({person: new FormGroup({})});
expect(() => fixture.detectChanges())
.toThrowError(new RegExp(
`ngModel cannot be used to register form controls with a parent formGroupName or formArrayName directive.`));
});
it('should throw if ngModelGroup is used with formGroup', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<div [formGroup]="myGroup">
<div ngModelGroup="person">
<input type="text" [(ngModel)]="data">
</div>
</div>
`
}
});
const fixture = initTest(FormGroupComp);
fixture.componentInstance.myGroup = new FormGroup({});
expect(() => fixture.detectChanges())
.toThrowError(
new RegExp(`ngModelGroup cannot be used with a parent formGroup directive`));
});
it('should throw if radio button name does not match formControlName attr', () => {
TestBed.overrideComponent(FormGroupComp, {
set: {
template: `
<form [formGroup]="form">hav
<input type="radio" formControlName="food" name="drink" value="chicken">
</form>`
}
});
const fixture = initTest(FormGroupComp);
fixture.componentInstance.form = new FormGroup({'food': new FormControl('fish')});
expect(() => fixture.detectChanges())
.toThrowError(new RegExp('If you define both a name and a formControlName'));
});
});
});
}
@Directive({
selector: '[wrapped-value]',
host: {'(input)': 'handleOnInput($event.target.value)', '[value]': 'value'},
providers: [
{provide: NG_VALUE_ACCESSOR, multi: true, useExisting: WrappedValue},
{provide: NG_VALIDATORS, multi: true, useExisting: WrappedValue}
]
})
class WrappedValue implements ControlValueAccessor {
value: any;
onChange: Function;
writeValue(value: any) { this.value = `!${value}!`; }
registerOnChange(fn: (value: any) => void) { this.onChange = fn; }
registerOnTouched(fn: any) {}
handleOnInput(value: any) { this.onChange(value.substring(1, value.length - 1)); }
validate(c: AbstractControl) { return c.value === 'expected' ? null : {'err': true}; }
}
@Component({selector: 'my-input', template: ''})
class MyInput implements ControlValueAccessor {
@Output('input') onInput = new EventEmitter();
value: string;
constructor(cd: NgControl) { cd.valueAccessor = this; }
writeValue(value: any) { this.value = `!${value}!`; }
registerOnChange(fn: (value: any) => void) { this.onInput.subscribe({next: fn}); }
registerOnTouched(fn: any) {}
dispatchChangeEvent() { this.onInput.emit(this.value.substring(1, this.value.length - 1)); }
}
function uniqLoginAsyncValidator(expectedValue: string) {
return (c: AbstractControl) => {
let resolve: (result: any) => void;
const promise = new Promise(res => { resolve = res; });
const res = (c.value == expectedValue) ? null : {'uniqLogin': true};
resolve(res);
return promise;
};
}
function loginIsEmptyGroupValidator(c: FormGroup) {
return c.controls['login'].value == '' ? {'loginIsEmpty': true} : null;
}
@Directive({
selector: '[login-is-empty-validator]',
providers: [{provide: NG_VALIDATORS, useValue: loginIsEmptyGroupValidator, multi: true}]
})
class LoginIsEmptyValidator {
}
@Directive({
selector: '[uniq-login-validator]',
providers: [{
provide: NG_ASYNC_VALIDATORS,
useExisting: forwardRef(() => UniqLoginValidator),
multi: true
}]
})
class UniqLoginValidator implements Validator {
@Input('uniq-login-validator') expected: any;
validate(c: AbstractControl) { return uniqLoginAsyncValidator(this.expected)(c); }
}
function sortedClassList(el: HTMLElement) {
return getDOM().classList(el).sort();
}
@Component({selector: 'form-control-comp', template: `<input type="text" [formControl]="control">`})
class FormControlComp {
control: FormControl;
}
@Component({
selector: 'form-group-comp',
template: `
<form [formGroup]="form" (ngSubmit)="event=$event">
<input type="text" formControlName="login">
</form>`
})
class FormGroupComp {
control: FormControl;
form: FormGroup;
myGroup: FormGroup;
event: Event;
}
@Component({
selector: 'nested-form-group-comp',
template: `
<form [formGroup]="form">
<div formGroupName="signin" login-is-empty-validator>
<input formControlName="login">
<input formControlName="password">
</div>
<input *ngIf="form.contains('email')" formControlName="email">
</form>`
})
class NestedFormGroupComp {
form: FormGroup;
}
@Component({
selector: 'form-control-number-input',
template: `<input type="number" [formControl]="control">`
})
class FormControlNumberInput {
control: FormControl;
}
@Component({
selector: 'form-control-range-input',
template: `<input type="range" [formControl]="control">`
})
class FormControlRangeInput {
control: FormControl;
}
@Component({
selector: 'form-control-radio-buttons',
template: `
<form [formGroup]="form" *ngIf="showRadio.value === 'yes'">
<input type="radio" formControlName="food" value="chicken">
<input type="radio" formControlName="food" value="fish">
<input type="radio" formControlName="drink" value="cola">
<input type="radio" formControlName="drink" value="sprite">
</form>
<input type="radio" [formControl]="showRadio" value="yes">
<input type="radio" [formControl]="showRadio" value="no">`
})
class FormControlRadioButtons {
form: FormGroup;
showRadio = new FormControl('yes');
}
@Component({
selector: 'form-array-comp',
template: `
<div [formGroup]="form">
<div formArrayName="cities">
<div *ngFor="let city of cityArray.controls; let i=index">
<input [formControlName]="i">
</div>
</div>
</div>`
})
class FormArrayComp {
form: FormGroup;
cityArray: FormArray;
}
@Component({
selector: 'form-array-nested-group',
template: `
<div [formGroup]="form">
<div formArrayName="cities">
<div *ngFor="let city of cityArray.controls; let i=index" [formGroupName]="i">
<input formControlName="town">
<input formControlName="state">
</div>
</div>
</div>`
})
class FormArrayNestedGroup {
form: FormGroup;
cityArray: FormArray;
}
@Component({
selector: 'form-control-name-select',
template: `
<div [formGroup]="form">
<select formControlName="city">
<option *ngFor="let c of cities" [value]="c"></option>
</select>
</div>`
})
class FormControlNameSelect {
cities = ['SF', 'NY'];
form = new FormGroup({city: new FormControl('SF')});
}
@Component({
selector: 'wrapped-value-form',
template: `
<div [formGroup]="form">
<input type="text" formControlName="login" wrapped-value>
</div>`
})
class WrappedValueForm {
form: FormGroup;
}
@Component({
selector: 'my-input-form',
template: `
<div [formGroup]="form">
<my-input formControlName="login"></my-input>
</div>`
})
class MyInputForm {
form: FormGroup;
}
@Component({
selector: 'form-group-ng-model',
template: `
<div [formGroup]="form">
<input type="text" formControlName="login" [(ngModel)]="login">
</div>`
})
class FormGroupNgModel {
form: FormGroup;
login: string;
}
@Component({
selector: 'form-control-ng-model',
template: `<input type="text" [formControl]="control" [(ngModel)]="login">`
})
class FormControlNgModel {
control: FormControl;
login: string;
}
@Component({
selector: 'login-is-empty-wrapper',
template: `
<div [formGroup]="form" login-is-empty-validator>
<input type="text" formControlName="login" required>
<input type="text" formControlName="min" minlength="3">
<input type="text" formControlName="max" maxlength="3">
<input type="text" formControlName="pattern" pattern=".{3,}">
</div>`
})
class LoginIsEmptyWrapper {
form: FormGroup;
}
@Component({
selector: 'validation-bindings-form',
template: `
<div [formGroup]="form">
<input name="required" type="text" formControlName="login" [required]="required">
<input name="minlength" type="text" formControlName="min" [minlength]="minLen">
<input name="maxlength" type="text" formControlName="max" [maxlength]="maxLen">
<input name="pattern" type="text" formControlName="pattern" [pattern]="pattern">
</div>`
})
class ValidationBindingsForm {
form: FormGroup;
required: boolean;
minLen: number;
maxLen: number;
pattern: string;
}
@Component({
selector: 'form-control-checkbox-validator',
template: `<input type="checkbox" [formControl]="control">`
})
class FormControlCheckboxRequiredValidator {
control: FormControl;
}
@Component({
selector: 'uniq-login-wrapper',
template: `
<div [formGroup]="form">
<input type="text" formControlName="login" uniq-login-validator="expected">
</div>`
})
class UniqLoginWrapper {
form: FormGroup;
}