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angular-cn/packages/forms/test/form_group_spec.ts
Michael Jerred 4ec045e12b feat(forms): add emitEvent option for AbstractControl-based class methods (#31031) 
This commit adds the `emitEvent` option to the following FormArray and FormGroup methods:

* FormGroup.addControl
* FormGroup.removeControl
* FormGroup.setControl
* FormArray.push
* FormArray.insert
* FormArray.removeAt
* FormArray.setControl
* FormArray.clear

This option can be used to prevent an event from being emitted when adding or removing controls.

BREAKING CHANGE:

The `emitEvent` option was added to the following `FormArray` and `FormGroup` methods:

* FormGroup.addControl
* FormGroup.removeControl
* FormGroup.setControl
* FormArray.push
* FormArray.insert
* FormArray.removeAt
* FormArray.setControl
* FormArray.clear

If your app has custom classes that extend `FormArray` or `FormGroup` classes and override the 
above-mentioned methods, you may need to update your implementation to take the new options into
account and make sure that overrides are compatible from a types perspective.

Closes #29662.
PR Close #31031
2021-02-16 08:42:08 -08:00

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/**
* @license
* Copyright Google LLC 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 {fakeAsync, tick, waitForAsync} from '@angular/core/testing';
import {AsyncTestCompleter, beforeEach, describe, inject, it} from '@angular/core/testing/src/testing_internal';
import {AbstractControl, FormArray, FormControl, FormGroup, ValidationErrors, Validators} from '@angular/forms';
import {of} from 'rxjs';
import {asyncValidator, asyncValidatorReturningObservable, currentStateOf, simpleAsyncValidator} from './util';
(function() {
function simpleValidator(c: AbstractControl): ValidationErrors|null {
return c.get('one')!.value === 'correct' ? null : {'broken': true};
}
function otherObservableValidator() {
return of({'other': true});
}
describe('FormGroup', () => {
describe('value', () => {
it('should be the reduced value of the child controls', () => {
const g = new FormGroup({'one': new FormControl('111'), 'two': new FormControl('222')});
expect(g.value).toEqual({'one': '111', 'two': '222'});
});
it('should be empty when there are no child controls', () => {
const g = new FormGroup({});
expect(g.value).toEqual({});
});
it('should support nested groups', () => {
const g = new FormGroup({
'one': new FormControl('111'),
'nested': new FormGroup({'two': new FormControl('222')})
});
expect(g.value).toEqual({'one': '111', 'nested': {'two': '222'}});
(<FormControl>(g.get('nested.two'))).setValue('333');
expect(g.value).toEqual({'one': '111', 'nested': {'two': '333'}});
});
});
describe('getRawValue', () => {
let fg: FormGroup;
it('should work with nested form groups/arrays', () => {
fg = new FormGroup({
'c1': new FormControl('v1'),
'group': new FormGroup({'c2': new FormControl('v2'), 'c3': new FormControl('v3')}),
'array': new FormArray([new FormControl('v4'), new FormControl('v5')])
});
fg.get('group')!.get('c3')!.disable();
(fg.get('array') as FormArray).at(1).disable();
expect(fg.getRawValue())
.toEqual({'c1': 'v1', 'group': {'c2': 'v2', 'c3': 'v3'}, 'array': ['v4', 'v5']});
});
});
describe('markAllAsTouched', () => {
it('should mark all descendants as touched', () => {
const formGroup: FormGroup = new FormGroup({
'c1': new FormControl('v1'),
'group': new FormGroup({'c2': new FormControl('v2'), 'c3': new FormControl('v3')}),
'array': new FormArray([
new FormControl('v4'), new FormControl('v5'), new FormGroup({'c4': new FormControl('v4')})
])
});
expect(formGroup.touched).toBe(false);
const control1 = formGroup.get('c1') as FormControl;
expect(control1.touched).toBe(false);
const innerGroup = formGroup.get('group') as FormGroup;
expect(innerGroup.touched).toBe(false);
const innerGroupFirstChildCtrl = innerGroup.get('c2') as FormControl;
expect(innerGroupFirstChildCtrl.touched).toBe(false);
formGroup.markAllAsTouched();
expect(formGroup.touched).toBe(true);
expect(control1.touched).toBe(true);
expect(innerGroup.touched).toBe(true);
expect(innerGroupFirstChildCtrl.touched).toBe(true);
const innerGroupSecondChildCtrl = innerGroup.get('c3') as FormControl;
expect(innerGroupSecondChildCtrl.touched).toBe(true);
const array = formGroup.get('array') as FormArray;
expect(array.touched).toBe(true);
const arrayFirstChildCtrl = array.at(0) as FormControl;
expect(arrayFirstChildCtrl.touched).toBe(true);
const arraySecondChildCtrl = array.at(1) as FormControl;
expect(arraySecondChildCtrl.touched).toBe(true);
const arrayFirstChildGroup = array.at(2) as FormGroup;
expect(arrayFirstChildGroup.touched).toBe(true);
const arrayFirstChildGroupFirstChildCtrl = arrayFirstChildGroup.get('c4') as FormControl;
expect(arrayFirstChildGroupFirstChildCtrl.touched).toBe(true);
});
});
describe('adding and removing controls', () => {
let logger: any[];
beforeEach(() => {
logger = [];
});
it('should update value and validity when control is added', () => {
const g = new FormGroup({'one': new FormControl('1')});
expect(g.value).toEqual({'one': '1'});
expect(g.valid).toBe(true);
g.addControl('two', new FormControl('2', Validators.minLength(10)));
expect(g.value).toEqual({'one': '1', 'two': '2'});
expect(g.valid).toBe(false);
});
it('should update value and validity when control is removed', () => {
const g = new FormGroup(
{'one': new FormControl('1'), 'two': new FormControl('2', Validators.minLength(10))});
expect(g.value).toEqual({'one': '1', 'two': '2'});
expect(g.valid).toBe(false);
g.removeControl('two');
expect(g.value).toEqual({'one': '1'});
expect(g.valid).toBe(true);
});
it('should not emit events when `FormGroup.addControl` is called with `emitEvent: false`',
() => {
const g = new FormGroup({'one': new FormControl('1')});
expect(g.value).toEqual({'one': '1'});
g.valueChanges.subscribe(() => logger.push('value change'));
g.statusChanges.subscribe(() => logger.push('status change'));
g.addControl('two', new FormControl('2'), {emitEvent: false});
expect(g.value).toEqual({'one': '1', 'two': '2'});
expect(logger).toEqual([]);
});
it('should not emit events when `FormGroup.removeControl` is called with `emitEvent: false`',
() => {
const g = new FormGroup(
{'one': new FormControl('1'), 'two': new FormControl('2', Validators.minLength(10))});
expect(g.value).toEqual({'one': '1', 'two': '2'});
expect(g.valid).toBe(false);
g.valueChanges.subscribe(() => logger.push('value change'));
g.statusChanges.subscribe(() => logger.push('status change'));
g.removeControl('two', {emitEvent: false});
expect(g.value).toEqual({'one': '1'});
expect(g.valid).toBe(true);
expect(logger).toEqual([]);
});
it('should not emit status change events when `FormGroup.addControl` is called with `emitEvent: false`',
() => {
const validatorFn = (value: any) =>
value.controls.invalidCtrl ? {invalidCtrl: true} : null;
const asyncValidatorFn = (value: any) => of(validatorFn(value));
const g = new FormGroup({}, validatorFn, asyncValidatorFn);
expect(g.valid).toBe(true);
g.statusChanges.subscribe(() => logger.push('status change'));
g.addControl('invalidCtrl', new FormControl(''), {emitEvent: false});
expect(g.value).toEqual({'invalidCtrl': ''});
expect(g.valid).toBe(false);
expect(logger).toEqual([]);
});
});
describe('dirty', () => {
let c: FormControl, g: FormGroup;
beforeEach(() => {
c = new FormControl('value');
g = new FormGroup({'one': c});
});
it('should be false after creating a control', () => {
expect(g.dirty).toEqual(false);
});
it('should be true after changing the value of the control', () => {
c.markAsDirty();
expect(g.dirty).toEqual(true);
});
});
describe('touched', () => {
let c: FormControl, g: FormGroup;
beforeEach(() => {
c = new FormControl('value');
g = new FormGroup({'one': c});
});
it('should be false after creating a control', () => {
expect(g.touched).toEqual(false);
});
it('should be true after control is marked as touched', () => {
c.markAsTouched();
expect(g.touched).toEqual(true);
});
});
describe('setValue', () => {
let c: FormControl, c2: FormControl, g: FormGroup;
beforeEach(() => {
c = new FormControl('');
c2 = new FormControl('');
g = new FormGroup({'one': c, 'two': c2});
});
it('should set its own value', () => {
g.setValue({'one': 'one', 'two': 'two'});
expect(g.value).toEqual({'one': 'one', 'two': 'two'});
});
it('should set child values', () => {
g.setValue({'one': 'one', 'two': 'two'});
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
});
it('should set child control values if disabled', () => {
c2.disable();
g.setValue({'one': 'one', 'two': 'two'});
expect(c2.value).toEqual('two');
expect(g.value).toEqual({'one': 'one'});
expect(g.getRawValue()).toEqual({'one': 'one', 'two': 'two'});
});
it('should set group value if group is disabled', () => {
g.disable();
g.setValue({'one': 'one', 'two': 'two'});
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
expect(g.value).toEqual({'one': 'one', 'two': 'two'});
});
it('should set parent values', () => {
const form = new FormGroup({'parent': g});
g.setValue({'one': 'one', 'two': 'two'});
expect(form.value).toEqual({'parent': {'one': 'one', 'two': 'two'}});
});
it('should not update the parent when explicitly specified', () => {
const form = new FormGroup({'parent': g});
g.setValue({'one': 'one', 'two': 'two'}, {onlySelf: true});
expect(form.value).toEqual({parent: {'one': '', 'two': ''}});
});
it('should throw if fields are missing from supplied value (subset)', () => {
expect(() => g.setValue({
'one': 'one'
})).toThrowError(new RegExp(`Must supply a value for form control with name: 'two'`));
});
it('should throw if a value is provided for a missing control (superset)', () => {
expect(() => g.setValue({'one': 'one', 'two': 'two', 'three': 'three'}))
.toThrowError(new RegExp(`Cannot find form control with name: three`));
});
it('should throw if a value is not provided for a disabled control', () => {
c2.disable();
expect(() => g.setValue({
'one': 'one'
})).toThrowError(new RegExp(`Must supply a value for form control with name: 'two'`));
});
it('should throw if no controls are set yet', () => {
const empty = new FormGroup({});
expect(() => empty.setValue({
'one': 'one'
})).toThrowError(new RegExp(`no form controls registered with this group`));
});
describe('setValue() events', () => {
let form: FormGroup;
let logger: any[];
beforeEach(() => {
form = new FormGroup({'parent': g});
logger = [];
});
it('should emit one valueChange event per control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
g.setValue({'one': 'one', 'two': 'two'});
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should not emit events when `FormGroup.setValue` is called with `emitEvent: false`',
() => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control'));
g.setValue({'one': 'one', 'two': 'two'}, {emitEvent: false});
expect(logger).toEqual([]);
});
it('should emit one statusChange event per control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
g.statusChanges.subscribe(() => logger.push('group'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
g.setValue({'one': 'one', 'two': 'two'});
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should not emit events on the parent when called with `emitEvent: false`', () => {
form.valueChanges.subscribe(() => logger.push('form value change'));
g.valueChanges.subscribe(() => logger.push('group value change'));
form.statusChanges.subscribe(() => logger.push('form status change'));
g.statusChanges.subscribe(() => logger.push('group status change'));
g.addControl('three', new FormControl(5), {emitEvent: false});
expect(logger).toEqual([]);
});
});
});
describe('patchValue', () => {
let c: FormControl, c2: FormControl, g: FormGroup, g2: FormGroup;
beforeEach(() => {
c = new FormControl('');
c2 = new FormControl('');
g = new FormGroup({'one': c, 'two': c2});
g2 = new FormGroup({
'array': new FormArray([new FormControl(1), new FormControl(2)]),
'group': new FormGroup({'one': new FormControl(3)}),
});
});
it('should set its own value', () => {
g.patchValue({'one': 'one', 'two': 'two'});
expect(g.value).toEqual({'one': 'one', 'two': 'two'});
});
it('should set child values', () => {
g.patchValue({'one': 'one', 'two': 'two'});
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
});
it('should patch disabled control values', () => {
c2.disable();
g.patchValue({'one': 'one', 'two': 'two'});
expect(c2.value).toEqual('two');
expect(g.value).toEqual({'one': 'one'});
expect(g.getRawValue()).toEqual({'one': 'one', 'two': 'two'});
});
it('should patch disabled control groups', () => {
g.disable();
g.patchValue({'one': 'one', 'two': 'two'});
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
expect(g.value).toEqual({'one': 'one', 'two': 'two'});
});
it('should set parent values', () => {
const form = new FormGroup({'parent': g});
g.patchValue({'one': 'one', 'two': 'two'});
expect(form.value).toEqual({'parent': {'one': 'one', 'two': 'two'}});
});
it('should not update the parent when explicitly specified', () => {
const form = new FormGroup({'parent': g});
g.patchValue({'one': 'one', 'two': 'two'}, {onlySelf: true});
expect(form.value).toEqual({parent: {'one': '', 'two': ''}});
});
it('should ignore fields that are missing from supplied value (subset)', () => {
g.patchValue({'one': 'one'});
expect(g.value).toEqual({'one': 'one', 'two': ''});
});
it('should not ignore fields that are null', () => {
g.patchValue({'one': null});
expect(g.value).toEqual({'one': null, 'two': ''});
});
it('should ignore any value provided for a missing control (superset)', () => {
g.patchValue({'three': 'three'});
expect(g.value).toEqual({'one': '', 'two': ''});
});
it('should ignore a control if `null` or `undefined` are used as values', () => {
const INITIAL_STATE = {'array': [1, 2], 'group': {'one': 3}};
g2.patchValue({'array': null});
expect(g2.value).toEqual(INITIAL_STATE);
g2.patchValue({'array': undefined});
expect(g2.value).toEqual(INITIAL_STATE);
g2.patchValue({'group': null});
expect(g2.value).toEqual(INITIAL_STATE);
g2.patchValue({'group': undefined});
expect(g2.value).toEqual(INITIAL_STATE);
});
describe('patchValue() events', () => {
let form: FormGroup;
let logger: any[];
beforeEach(() => {
form = new FormGroup({'parent': g});
logger = [];
});
it('should emit one valueChange event per control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
g.patchValue({'one': 'one', 'two': 'two'});
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should not emit valueChange events for skipped controls', () => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
g.patchValue({'one': 'one'});
expect(logger).toEqual(['control1', 'group', 'form']);
});
it('should not emit valueChange events for skipped controls (represented as `null` or `undefined`)',
() => {
const logEvent = () => logger.push('valueChanges event');
const [formArrayControl1, formArrayControl2] = (g2.controls.array as FormArray).controls;
const formGroupControl = (g2.controls.group as FormGroup).controls.one;
formArrayControl1.valueChanges.subscribe(logEvent);
formArrayControl2.valueChanges.subscribe(logEvent);
formGroupControl.valueChanges.subscribe(logEvent);
g2.patchValue({'array': null});
g2.patchValue({'array': undefined});
g2.patchValue({'group': null});
g2.patchValue({'group': undefined});
// No events are expected in `valueChanges` since
// all controls were skipped in `patchValue`.
expect(logger).toEqual([]);
});
it('should not emit events when `FormGroup.patchValue` is called with `emitEvent: false`',
() => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control'));
g.patchValue({'one': 'one', 'two': 'two'}, {emitEvent: false});
expect(logger).toEqual([]);
});
it('should emit one statusChange event per control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
g.statusChanges.subscribe(() => logger.push('group'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
g.patchValue({'one': 'one', 'two': 'two'});
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
});
});
describe('reset()', () => {
let c: FormControl, c2: FormControl, g: FormGroup;
beforeEach(() => {
c = new FormControl('initial value');
c2 = new FormControl('');
g = new FormGroup({'one': c, 'two': c2});
});
it('should set its own value if value passed', () => {
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset({'one': 'initial value', 'two': ''});
expect(g.value).toEqual({'one': 'initial value', 'two': ''});
});
it('should set its own value if boxed value passed', () => {
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset({'one': {value: 'initial value', disabled: false}, 'two': ''});
expect(g.value).toEqual({'one': 'initial value', 'two': ''});
});
it('should clear its own value if no value passed', () => {
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset();
expect(g.value).toEqual({'one': null, 'two': null});
});
it('should set the value of each of its child controls if value passed', () => {
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset({'one': 'initial value', 'two': ''});
expect(c.value).toBe('initial value');
expect(c2.value).toBe('');
});
it('should clear the value of each of its child controls if no value passed', () => {
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset();
expect(c.value).toBe(null);
expect(c2.value).toBe(null);
});
it('should set the value of its parent if value passed', () => {
const form = new FormGroup({'g': g});
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset({'one': 'initial value', 'two': ''});
expect(form.value).toEqual({'g': {'one': 'initial value', 'two': ''}});
});
it('should clear the value of its parent if no value passed', () => {
const form = new FormGroup({'g': g});
g.setValue({'one': 'new value', 'two': 'new value'});
g.reset();
expect(form.value).toEqual({'g': {'one': null, 'two': null}});
});
it('should not update the parent when explicitly specified', () => {
const form = new FormGroup({'g': g});
g.reset({'one': 'new value', 'two': 'new value'}, {onlySelf: true});
expect(form.value).toEqual({g: {'one': 'initial value', 'two': ''}});
});
it('should mark itself as pristine', () => {
g.markAsDirty();
expect(g.pristine).toBe(false);
g.reset();
expect(g.pristine).toBe(true);
});
it('should mark all child controls as pristine', () => {
c.markAsDirty();
c2.markAsDirty();
expect(c.pristine).toBe(false);
expect(c2.pristine).toBe(false);
g.reset();
expect(c.pristine).toBe(true);
expect(c2.pristine).toBe(true);
});
it('should mark the parent as pristine if all siblings pristine', () => {
const c3 = new FormControl('');
const form = new FormGroup({'g': g, 'c3': c3});
g.markAsDirty();
expect(form.pristine).toBe(false);
g.reset();
expect(form.pristine).toBe(true);
});
it('should not mark the parent pristine if any dirty siblings', () => {
const c3 = new FormControl('');
const form = new FormGroup({'g': g, 'c3': c3});
g.markAsDirty();
c3.markAsDirty();
expect(form.pristine).toBe(false);
g.reset();
expect(form.pristine).toBe(false);
});
it('should mark itself as untouched', () => {
g.markAsTouched();
expect(g.untouched).toBe(false);
g.reset();
expect(g.untouched).toBe(true);
});
it('should mark all child controls as untouched', () => {
c.markAsTouched();
c2.markAsTouched();
expect(c.untouched).toBe(false);
expect(c2.untouched).toBe(false);
g.reset();
expect(c.untouched).toBe(true);
expect(c2.untouched).toBe(true);
});
it('should mark the parent untouched if all siblings untouched', () => {
const c3 = new FormControl('');
const form = new FormGroup({'g': g, 'c3': c3});
g.markAsTouched();
expect(form.untouched).toBe(false);
g.reset();
expect(form.untouched).toBe(true);
});
it('should not mark the parent untouched if any touched siblings', () => {
const c3 = new FormControl('');
const form = new FormGroup({'g': g, 'c3': c3});
g.markAsTouched();
c3.markAsTouched();
expect(form.untouched).toBe(false);
g.reset();
expect(form.untouched).toBe(false);
});
it('should retain previous disabled state', () => {
g.disable();
g.reset();
expect(g.disabled).toBe(true);
});
it('should set child disabled state if boxed value passed', () => {
g.disable();
g.reset({'one': {value: '', disabled: false}, 'two': ''});
expect(c.disabled).toBe(false);
expect(g.disabled).toBe(false);
});
describe('reset() events', () => {
let form: FormGroup, c3: FormControl, logger: any[];
beforeEach(() => {
c3 = new FormControl('');
form = new FormGroup({'g': g, 'c3': c3});
logger = [];
});
it('should emit one valueChange event per reset control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
c3.valueChanges.subscribe(() => logger.push('control3'));
g.reset();
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should not emit events when `FormGroup.reset` is called with `emitEvent: false`', () => {
form.valueChanges.subscribe(() => logger.push('form'));
g.valueChanges.subscribe(() => logger.push('group'));
c.valueChanges.subscribe(() => logger.push('control'));
g.reset({}, {emitEvent: false});
expect(logger).toEqual([]);
});
it('should emit one statusChange event per reset control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
g.statusChanges.subscribe(() => logger.push('group'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
c3.statusChanges.subscribe(() => logger.push('control3'));
g.reset();
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should emit one statusChange event per reset control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
g.statusChanges.subscribe(() => logger.push('group'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
c3.statusChanges.subscribe(() => logger.push('control3'));
g.reset({'one': {value: '', disabled: true}});
expect(logger).toEqual(['control1', 'control2', 'group', 'form']);
});
it('should mark as pristine and not dirty before emitting valueChange and statusChange events when resetting',
() => {
const pristineAndNotDirty = () => {
expect(form.pristine).toBe(true);
expect(form.dirty).toBe(false);
};
c3.markAsDirty();
expect(form.pristine).toBe(false);
expect(form.dirty).toBe(true);
form.valueChanges.subscribe(pristineAndNotDirty);
form.statusChanges.subscribe(pristineAndNotDirty);
form.reset();
});
});
});
describe('contains', () => {
let group: FormGroup;
beforeEach(() => {
group = new FormGroup({
'required': new FormControl('requiredValue'),
'optional': new FormControl({value: 'disabled value', disabled: true})
});
});
it('should return false when the component is disabled', () => {
expect(group.contains('optional')).toEqual(false);
});
it('should return false when there is no component with the given name', () => {
expect(group.contains('something else')).toEqual(false);
});
it('should return true when the component is enabled', () => {
expect(group.contains('required')).toEqual(true);
group.enable();
expect(group.contains('optional')).toEqual(true);
});
it('should support controls with dots in their name', () => {
expect(group.contains('some.name')).toBe(false);
group.addControl('some.name', new FormControl());
expect(group.contains('some.name')).toBe(true);
});
});
describe('retrieve', () => {
let group: FormGroup;
beforeEach(() => {
group = new FormGroup({
'required': new FormControl('requiredValue'),
});
});
it('should not get inherited properties', () => {
expect(group.get('constructor')).toBe(null);
});
});
describe('statusChanges', () => {
let control: FormControl;
let group: FormGroup;
beforeEach(waitForAsync(() => {
control = new FormControl('', asyncValidatorReturningObservable);
group = new FormGroup({'one': control});
}));
// TODO(kara): update these tests to use fake Async
it('should fire a statusChange if child has async validation change',
inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
const loggedValues: string[] = [];
group.statusChanges.subscribe({
next: (status: string) => {
loggedValues.push(status);
if (loggedValues.length === 2) {
expect(loggedValues).toEqual(['PENDING', 'INVALID']);
}
async.done();
}
});
control.setValue('');
}));
});
describe('getError', () => {
it('should return the error when it is present', () => {
const c = new FormControl('', Validators.required);
const g = new FormGroup({'one': c});
expect(c.getError('required')).toEqual(true);
expect(g.getError('required', ['one'])).toEqual(true);
});
it('should return null otherwise', () => {
const c = new FormControl('not empty', Validators.required);
const g = new FormGroup({'one': c});
expect(c.getError('invalid')).toEqual(null);
expect(g.getError('required', ['one'])).toEqual(null);
expect(g.getError('required', ['invalid'])).toEqual(null);
});
it('should be able to traverse group with single string', () => {
const c = new FormControl('', Validators.required);
const g = new FormGroup({'one': c});
expect(c.getError('required')).toEqual(true);
expect(g.getError('required', 'one')).toEqual(true);
});
it('should be able to traverse group with string delimited by dots', () => {
const c = new FormControl('', Validators.required);
const g2 = new FormGroup({'two': c});
const g1 = new FormGroup({'one': g2});
expect(c.getError('required')).toEqual(true);
expect(g1.getError('required', 'one.two')).toEqual(true);
});
it('should traverse group with form array using string and numbers', () => {
const c = new FormControl('', Validators.required);
const g2 = new FormGroup({'two': c});
const a = new FormArray([g2]);
const g1 = new FormGroup({'one': a});
expect(c.getError('required')).toEqual(true);
expect(g1.getError('required', ['one', 0, 'two'])).toEqual(true);
});
});
describe('hasError', () => {
it('should return true when it is present', () => {
const c = new FormControl('', Validators.required);
const g = new FormGroup({'one': c});
expect(c.hasError('required')).toEqual(true);
expect(g.hasError('required', ['one'])).toEqual(true);
});
it('should return false otherwise', () => {
const c = new FormControl('not empty', Validators.required);
const g = new FormGroup({'one': c});
expect(c.hasError('invalid')).toEqual(false);
expect(g.hasError('required', ['one'])).toEqual(false);
expect(g.hasError('required', ['invalid'])).toEqual(false);
});
it('should be able to traverse group with single string', () => {
const c = new FormControl('', Validators.required);
const g = new FormGroup({'one': c});
expect(c.hasError('required')).toEqual(true);
expect(g.hasError('required', 'one')).toEqual(true);
});
it('should be able to traverse group with string delimited by dots', () => {
const c = new FormControl('', Validators.required);
const g2 = new FormGroup({'two': c});
const g1 = new FormGroup({'one': g2});
expect(c.hasError('required')).toEqual(true);
expect(g1.hasError('required', 'one.two')).toEqual(true);
});
it('should traverse group with form array using string and numbers', () => {
const c = new FormControl('', Validators.required);
const g2 = new FormGroup({'two': c});
const a = new FormArray([g2]);
const g1 = new FormGroup({'one': a});
expect(c.getError('required')).toEqual(true);
expect(g1.getError('required', ['one', 0, 'two'])).toEqual(true);
});
});
describe('validator', () => {
function containsValidator(c: AbstractControl): ValidationErrors|null {
return c.get('one')!.value && c.get('one')!.value.indexOf('c') !== -1 ? null :
{'missing': true};
}
it('should run a single validator when the value changes', () => {
const c = new FormControl(null);
const g = new FormGroup({'one': c}, simpleValidator);
c.setValue('correct');
expect(g.valid).toEqual(true);
expect(g.errors).toEqual(null);
c.setValue('incorrect');
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({'broken': true});
});
it('should support multiple validators from array', () => {
const g = new FormGroup({one: new FormControl()}, [simpleValidator, containsValidator]);
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({missing: true, broken: true});
g.setValue({one: 'c'});
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({broken: true});
g.setValue({one: 'correct'});
expect(g.valid).toEqual(true);
});
it('should set single validator from options obj', () => {
const g = new FormGroup({one: new FormControl()}, {validators: simpleValidator});
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({broken: true});
g.setValue({one: 'correct'});
expect(g.valid).toEqual(true);
});
it('should set multiple validators from options obj', () => {
const g = new FormGroup(
{one: new FormControl()}, {validators: [simpleValidator, containsValidator]});
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({missing: true, broken: true});
g.setValue({one: 'c'});
expect(g.valid).toEqual(false);
expect(g.errors).toEqual({broken: true});
g.setValue({one: 'correct'});
expect(g.valid).toEqual(true);
});
});
describe('asyncValidator', () => {
it('should run the async validator', fakeAsync(() => {
const c = new FormControl('value');
const g = new FormGroup({'one': c}, null!, asyncValidator('expected'));
expect(g.pending).toEqual(true);
tick(1);
expect(g.errors).toEqual({'async': true});
expect(g.pending).toEqual(false);
}));
it('should set multiple async validators from array', fakeAsync(() => {
const g = new FormGroup(
{'one': new FormControl('value')}, null!,
[asyncValidator('expected'), otherObservableValidator]);
expect(g.pending).toEqual(true);
tick();
expect(g.errors).toEqual({'async': true, 'other': true});
expect(g.pending).toEqual(false);
}));
it('should set single async validator from options obj', fakeAsync(() => {
const g = new FormGroup(
{'one': new FormControl('value')}, {asyncValidators: asyncValidator('expected')});
expect(g.pending).toEqual(true);
tick();
expect(g.errors).toEqual({'async': true});
expect(g.pending).toEqual(false);
}));
it('should set multiple async validators from options obj', fakeAsync(() => {
const g = new FormGroup(
{'one': new FormControl('value')},
{asyncValidators: [asyncValidator('expected'), otherObservableValidator]});
expect(g.pending).toEqual(true);
tick();
expect(g.errors).toEqual({'async': true, 'other': true});
expect(g.pending).toEqual(false);
}));
it('should set the parent group\'s status to pending', fakeAsync(() => {
const c = new FormControl('value', null!, asyncValidator('expected'));
const g = new FormGroup({'one': c});
expect(g.pending).toEqual(true);
tick(1);
expect(g.pending).toEqual(false);
}));
it('should run the parent group\'s async validator when children are pending', fakeAsync(() => {
const c = new FormControl('value', null!, asyncValidator('expected'));
const g = new FormGroup({'one': c}, null!, asyncValidator('expected'));
tick(1);
expect(g.errors).toEqual({'async': true});
expect(g.get('one')!.errors).toEqual({'async': true});
}));
it('should handle successful async FormGroup resolving synchronously before a successful async child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup(
{'one': c}, null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
// Initially, the form control validation is pending, and the form group own validation has
// synchronously resolved. Still, the form is in pending state due to its child
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, the form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle successful async FormGroup resolving after a synchronously and successfully resolving child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const g = new FormGroup(
{'one': c}, null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
// Initially, form control validator has synchronously resolved. However, g has its own
// pending validation
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle successful async FormGroup and child control validators resolving synchronously',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const g = new FormGroup(
{'one': c}, null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
// Both form control and form group successful async validators have resolved synchronously
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle failing async FormGroup and failing child control validators resolving synchronously',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 0, shouldFail: true}));
const g =
new FormGroup({'one': c}, null!, simpleAsyncValidator({timeout: 0, shouldFail: true}));
// FormControl async validator has executed and failed synchronously with the default error
// `{async: true}`. Next, the form group status is calculated. Since one of its children is
// failing, the form group itself is marked `INVALID`. And its asynchronous validation is
// not even triggered. Therefore, we end up with form group that is `INVALID` but whose
// errors are null (child errors do not propagate and own async validation not event
// triggered).
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'INVALID'}, // Group
{errors: {async: true}, pending: false, status: 'INVALID'}, // Control
]);
}));
it('should handle failing async FormGroup and successful child control validators resolving synchronously',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const g =
new FormGroup({'one': c}, null!, simpleAsyncValidator({timeout: 0, shouldFail: true}));
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle failing async FormArray and successful children validators resolving synchronously',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const g = new FormGroup(
{'one': c}, null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const c2 =
new FormControl('fcVal', null!, simpleAsyncValidator({timeout: 0, shouldFail: false}));
const a =
new FormArray([g, c2], null!, simpleAsyncValidator({timeout: 0, shouldFail: true}));
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Array
{errors: null, pending: false, status: 'VALID'}, // Group p
{errors: null, pending: false, status: 'VALID'}, // Control c2
]);
}));
it('should handle failing FormGroup validator resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g =
new FormGroup({'one': c}, null!, simpleAsyncValidator({timeout: 2, shouldFail: true}));
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation fails
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle failing FormArray validator resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const a = new FormArray([c], null!, simpleAsyncValidator({timeout: 2, shouldFail: true}));
// Initially, the form array and nested control are in pending state
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form array validation fails
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle successful FormGroup validator resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup(
{'one': c}, null!, simpleAsyncValidator({timeout: 2, shouldFail: false}));
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation resolves
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle successful FormArray validator resolving after successful child validators',
fakeAsync(() => {
const c1 = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup(
{'one': c1}, null!, simpleAsyncValidator({timeout: 2, shouldFail: false}));
const c2 =
new FormControl('fcVal', null!, simpleAsyncValidator({timeout: 3, shouldFail: false}));
const a =
new FormArray([g, c2], null!, simpleAsyncValidator({timeout: 4, shouldFail: false}));
// Initially, the form array and the tested form group and form control c2 are in pending
// state
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: true, status: 'PENDING'}, // g
{errors: null, pending: true, status: 'PENDING'}, // c2
]);
tick(2);
// After 2ms, g validation has resolved
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: true, status: 'PENDING'}, // c2
]);
tick(1);
// After 1ms, c2 validation has resolved
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: false, status: 'VALID'}, // c2
]);
tick(1);
// After 1ms, FormArray own validation has resolved
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: false, status: 'VALID'}, // c2
]);
}));
it('should handle failing FormArray validator resolving after successful child validators',
fakeAsync(() => {
const c1 = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup(
{'one': c1}, null!, simpleAsyncValidator({timeout: 2, shouldFail: false}));
const c2 =
new FormControl('fcVal', null!, simpleAsyncValidator({timeout: 3, shouldFail: false}));
const a =
new FormArray([g, c2], null!, simpleAsyncValidator({timeout: 4, shouldFail: true}));
// Initially, the form array and the tested form group and form control c2 are in pending
// state
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: true, status: 'PENDING'}, // g
{errors: null, pending: true, status: 'PENDING'}, // c2
]);
tick(2);
// After 2ms, g validation has resolved
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: true, status: 'PENDING'}, // c2
]);
tick(1);
// After 1ms, c2 validation has resolved
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: false, status: 'VALID'}, // c2
]);
tick(1);
// After 1ms, FormArray own validation has failed
expect(currentStateOf([a, a.at(0)!, a.at(1)!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // g
{errors: null, pending: false, status: 'VALID'}, // c2
]);
}));
it('should handle multiple successful FormGroup validators resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup({'one': c}, null!, [
simpleAsyncValidator({timeout: 2, shouldFail: false}),
simpleAsyncValidator({timeout: 3, shouldFail: false})
]);
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, one form async validator has resolved but not the second
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation resolves
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle multiple FormGroup validators (success then failure) resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup({'one': c}, null!, [
simpleAsyncValidator({timeout: 2, shouldFail: false}),
simpleAsyncValidator({timeout: 3, shouldFail: true})
]);
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, one form async validator has resolved but not the second
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation fails
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle multiple FormGroup validators (failure then success) resolving after successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g = new FormGroup({'one': c}, null!, [
simpleAsyncValidator({timeout: 2, shouldFail: true}),
simpleAsyncValidator({timeout: 3, shouldFail: false})
]);
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, only form control validation has resolved
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// All async validators are composed into one function. So, after 2ms, the FormGroup g is
// still in pending state without errors
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
tick(1);
// After 1ms, the form group validation fails
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle async validators in nested form groups / arrays', fakeAsync(() => {
const c1 = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 1, shouldFail: false}));
const g1 = new FormGroup(
{'one': c1}, null!, simpleAsyncValidator({timeout: 2, shouldFail: true}));
const c2 =
new FormControl('fcVal', null!, simpleAsyncValidator({timeout: 3, shouldFail: false}));
const g2 =
new FormArray([c2], null!, simpleAsyncValidator({timeout: 4, shouldFail: false}));
const g = new FormGroup(
{'g1': g1, 'g2': g2}, null!, simpleAsyncValidator({timeout: 5, shouldFail: false}));
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('g1')!, g.get('g2')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group g
{errors: null, pending: true, status: 'PENDING'}, // Group g1
{errors: null, pending: true, status: 'PENDING'}, // Group g2
]);
tick(2);
// After 2ms, g1 validation fails
expect(currentStateOf([g, g.get('g1')!, g.get('g2')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group g
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group g1
{errors: null, pending: true, status: 'PENDING'}, // Group g2
]);
tick(2);
// After 2ms, g2 validation resolves
expect(currentStateOf([g, g.get('g1')!, g.get('g2')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group g
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group g1
{errors: null, pending: false, status: 'VALID'}, // Group g2
]);
tick(1);
// After 1ms, g validation fails because g1 is invalid, but since errors do not cascade, so
// we still have null errors for g
expect(currentStateOf([g, g.get('g1')!, g.get('g2')!])).toEqual([
{errors: null, pending: false, status: 'INVALID'}, // Group g
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group g1
{errors: null, pending: false, status: 'VALID'}, // Group g2
]);
}));
it('should handle failing FormGroup validator resolving before successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 2, shouldFail: false}));
const g =
new FormGroup({'one': c}, null!, simpleAsyncValidator({timeout: 1, shouldFail: true}));
// Initially, the form group and nested control are in pending state
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, form group validation fails
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, child validation resolves
expect(currentStateOf([g, g.get('one')!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
it('should handle failing FormArray validator resolving before successful child validator',
fakeAsync(() => {
const c = new FormControl(
'fcValue', null!, simpleAsyncValidator({timeout: 2, shouldFail: false}));
const a = new FormArray([c], null!, simpleAsyncValidator({timeout: 1, shouldFail: true}));
// Initially, the form array and nested control are in pending state
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // FormArray
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, form array validation fails
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // FormArray
{errors: null, pending: true, status: 'PENDING'}, // Control
]);
tick(1);
// After 1ms, child validation resolves
expect(currentStateOf([a, a.at(0)!])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // FormArray
{errors: null, pending: false, status: 'VALID'}, // Control
]);
}));
});
describe('disable() & enable()', () => {
it('should mark the group as disabled', () => {
const g = new FormGroup({'one': new FormControl(null)});
expect(g.disabled).toBe(false);
expect(g.valid).toBe(true);
g.disable();
expect(g.disabled).toBe(true);
expect(g.valid).toBe(false);
g.enable();
expect(g.disabled).toBe(false);
expect(g.valid).toBe(true);
});
it('should set the group status as disabled', () => {
const g = new FormGroup({'one': new FormControl(null)});
expect(g.status).toEqual('VALID');
g.disable();
expect(g.status).toEqual('DISABLED');
g.enable();
expect(g.status).toBe('VALID');
});
it('should mark children of the group as disabled', () => {
const c1 = new FormControl(null);
const c2 = new FormControl(null);
const g = new FormGroup({'one': c1, 'two': c2});
expect(c1.disabled).toBe(false);
expect(c2.disabled).toBe(false);
g.disable();
expect(c1.disabled).toBe(true);
expect(c2.disabled).toBe(true);
g.enable();
expect(c1.disabled).toBe(false);
expect(c2.disabled).toBe(false);
});
it('should ignore disabled controls in validation', () => {
const g = new FormGroup({
nested: new FormGroup({one: new FormControl(null, Validators.required)}),
two: new FormControl('two')
});
expect(g.valid).toBe(false);
g.get('nested')!.disable();
expect(g.valid).toBe(true);
g.get('nested')!.enable();
expect(g.valid).toBe(false);
});
it('should ignore disabled controls when serializing value', () => {
const g = new FormGroup(
{nested: new FormGroup({one: new FormControl('one')}), two: new FormControl('two')});
expect(g.value).toEqual({'nested': {'one': 'one'}, 'two': 'two'});
g.get('nested')!.disable();
expect(g.value).toEqual({'two': 'two'});
g.get('nested')!.enable();
expect(g.value).toEqual({'nested': {'one': 'one'}, 'two': 'two'});
});
it('should update its value when disabled with disabled children', () => {
const g = new FormGroup(
{nested: new FormGroup({one: new FormControl('one'), two: new FormControl('two')})});
g.get('nested.two')!.disable();
expect(g.value).toEqual({nested: {one: 'one'}});
g.get('nested')!.disable();
expect(g.value).toEqual({nested: {one: 'one', two: 'two'}});
g.get('nested')!.enable();
expect(g.value).toEqual({nested: {one: 'one', two: 'two'}});
});
it('should update its value when enabled with disabled children', () => {
const g = new FormGroup(
{nested: new FormGroup({one: new FormControl('one'), two: new FormControl('two')})});
g.get('nested.two')!.disable();
expect(g.value).toEqual({nested: {one: 'one'}});
g.get('nested')!.enable();
expect(g.value).toEqual({nested: {one: 'one', two: 'two'}});
});
it('should ignore disabled controls when determining dirtiness', () => {
const g = new FormGroup(
{nested: new FormGroup({one: new FormControl('one')}), two: new FormControl('two')});
g.get('nested.one')!.markAsDirty();
expect(g.dirty).toBe(true);
g.get('nested')!.disable();
expect(g.get('nested')!.dirty).toBe(true);
expect(g.dirty).toEqual(false);
g.get('nested')!.enable();
expect(g.dirty).toEqual(true);
});
it('should ignore disabled controls when determining touched state', () => {
const g = new FormGroup(
{nested: new FormGroup({one: new FormControl('one')}), two: new FormControl('two')});
g.get('nested.one')!.markAsTouched();
expect(g.touched).toBe(true);
g.get('nested')!.disable();
expect(g.get('nested')!.touched).toBe(true);
expect(g.touched).toEqual(false);
g.get('nested')!.enable();
expect(g.touched).toEqual(true);
});
it('should keep empty, disabled groups disabled when updating validity', () => {
const group = new FormGroup({});
expect(group.status).toEqual('VALID');
group.disable();
expect(group.status).toEqual('DISABLED');
group.updateValueAndValidity();
expect(group.status).toEqual('DISABLED');
group.addControl('one', new FormControl({value: '', disabled: true}));
expect(group.status).toEqual('DISABLED');
group.addControl('two', new FormControl());
expect(group.status).toEqual('VALID');
});
it('should re-enable empty, disabled groups', () => {
const group = new FormGroup({});
group.disable();
expect(group.status).toEqual('DISABLED');
group.enable();
expect(group.status).toEqual('VALID');
});
it('should not run validators on disabled controls', () => {
const validator = jasmine.createSpy('validator');
const g = new FormGroup({'one': new FormControl()}, validator);
expect(validator.calls.count()).toEqual(1);
g.disable();
expect(validator.calls.count()).toEqual(1);
g.setValue({one: 'value'});
expect(validator.calls.count()).toEqual(1);
g.enable();
expect(validator.calls.count()).toEqual(2);
});
describe('disabled errors', () => {
it('should clear out group errors when disabled', () => {
const g = new FormGroup({'one': new FormControl()}, () => ({'expected': true}));
expect(g.errors).toEqual({'expected': true});
g.disable();
expect(g.errors).toEqual(null);
g.enable();
expect(g.errors).toEqual({'expected': true});
});
it('should re-populate group errors when enabled from a child', () => {
const g = new FormGroup({'one': new FormControl()}, () => ({'expected': true}));
g.disable();
expect(g.errors).toEqual(null);
g.addControl('two', new FormControl());
expect(g.errors).toEqual({'expected': true});
});
it('should clear out async group errors when disabled', fakeAsync(() => {
const g = new FormGroup({'one': new FormControl()}, null!, asyncValidator('expected'));
tick();
expect(g.errors).toEqual({'async': true});
g.disable();
expect(g.errors).toEqual(null);
g.enable();
tick();
expect(g.errors).toEqual({'async': true});
}));
it('should re-populate async group errors when enabled from a child', fakeAsync(() => {
const g = new FormGroup({'one': new FormControl()}, null!, asyncValidator('expected'));
tick();
expect(g.errors).toEqual({'async': true});
g.disable();
expect(g.errors).toEqual(null);
g.addControl('two', new FormControl());
tick();
expect(g.errors).toEqual({'async': true});
}));
});
describe('disabled events', () => {
let logger: string[];
let c: FormControl;
let g: FormGroup;
let form: FormGroup;
beforeEach(() => {
logger = [];
c = new FormControl('', Validators.required);
g = new FormGroup({one: c});
form = new FormGroup({g: g});
});
it('should emit value change events in the right order', () => {
c.valueChanges.subscribe(() => logger.push('control'));
g.valueChanges.subscribe(() => logger.push('group'));
form.valueChanges.subscribe(() => logger.push('form'));
g.disable();
expect(logger).toEqual(['control', 'group', 'form']);
});
it('should emit status change events in the right order', () => {
c.statusChanges.subscribe(() => logger.push('control'));
g.statusChanges.subscribe(() => logger.push('group'));
form.statusChanges.subscribe(() => logger.push('form'));
g.disable();
expect(logger).toEqual(['control', 'group', 'form']);
});
it('should not emit value change events when called with `emitEvent: false`', () => {
c.valueChanges.subscribe(() => logger.push('control'));
g.valueChanges.subscribe(() => logger.push('group'));
form.valueChanges.subscribe(() => logger.push('form'));
g.disable({emitEvent: false});
expect(logger).toEqual([]);
g.enable({emitEvent: false});
expect(logger).toEqual([]);
});
it('should not emit status change events when called with `emitEvent: false`', () => {
c.statusChanges.subscribe(() => logger.push('control'));
g.statusChanges.subscribe(() => logger.push('group'));
form.statusChanges.subscribe(() => logger.push('form'));
g.disable({emitEvent: false});
expect(logger).toEqual([]);
g.enable({emitEvent: false});
expect(logger).toEqual([]);
});
});
});
describe('updateTreeValidity()', () => {
let c: FormControl, c2: FormControl, c3: FormControl;
let nested: FormGroup, form: FormGroup;
let logger: string[];
beforeEach(() => {
c = new FormControl('one');
c2 = new FormControl('two');
c3 = new FormControl('three');
nested = new FormGroup({one: c, two: c2});
form = new FormGroup({nested: nested, three: c3});
logger = [];
c.statusChanges.subscribe(() => logger.push('one'));
c2.statusChanges.subscribe(() => logger.push('two'));
c3.statusChanges.subscribe(() => logger.push('three'));
nested.statusChanges.subscribe(() => logger.push('nested'));
form.statusChanges.subscribe(() => logger.push('form'));
});
it('should update tree validity', () => {
(form as any)._updateTreeValidity();
expect(logger).toEqual(['one', 'two', 'nested', 'three', 'form']);
});
it('should not emit events when called with `emitEvent: false`', () => {
(form as any)._updateTreeValidity({emitEvent: false});
expect(logger).toEqual([]);
});
});
describe('setControl()', () => {
let c: FormControl;
let g: FormGroup;
beforeEach(() => {
c = new FormControl('one');
g = new FormGroup({one: c});
});
it('should replace existing control with new control', () => {
const c2 = new FormControl('new!', Validators.minLength(10));
g.setControl('one', c2);
expect(g.controls['one']).toEqual(c2);
expect(g.value).toEqual({one: 'new!'});
expect(g.valid).toBe(false);
});
it('should add control if control did not exist before', () => {
const c2 = new FormControl('new!', Validators.minLength(10));
g.setControl('two', c2);
expect(g.controls['two']).toEqual(c2);
expect(g.value).toEqual({one: 'one', two: 'new!'});
expect(g.valid).toBe(false);
});
it('should remove control if new control is null', () => {
g.setControl('one', null!);
expect(g.controls['one']).not.toBeDefined();
expect(g.value).toEqual({});
});
it('should only emit value change event once', () => {
const logger: string[] = [];
const c2 = new FormControl('new!');
g.valueChanges.subscribe(() => logger.push('change!'));
g.setControl('one', c2);
expect(logger).toEqual(['change!']);
});
it('should not emit event called when `FormGroup.setControl` with `emitEvent: false`', () => {
const logger: string[] = [];
const c2 = new FormControl('new!');
g.valueChanges.subscribe(() => logger.push('value change'));
g.statusChanges.subscribe(() => logger.push('status change'));
g.setControl('one', c2, {emitEvent: false});
expect(logger).toEqual([]);
});
});
describe('emit `statusChanges` and `valueChanges` with/without async/sync validators', () => {
const attachEventsLogger = (control: AbstractControl, log: string[], controlName?: string) => {
const name = controlName ? ` (${controlName})` : '';
control.statusChanges.subscribe(status => log.push(`status${name}: ${status}`));
control.valueChanges.subscribe(value => log.push(`value${name}: ${JSON.stringify(value)}`));
};
describe('stand alone controls', () => {
it('should run the async validator on stand alone controls and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c =
new FormControl('', null, simpleAsyncValidator({timeout: 0, shouldFail: true}));
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
tick(1);
c.setValue('new!', {emitEvent: true});
tick(1);
// Note that above `simpleAsyncValidator` is called with `timeout:0`. When the timeout
// is set to `0`, the function returns `of(error)`, and the function behaves in a
// synchronous manner. Because of this there is no `PENDING` state as seen in the
// `logs`.
expect(logs).toEqual([
'status: INVALID', // status change emitted as a result of initial async validator run
'value: "new!"', // value change emitted by `setValue`
'status: INVALID' // async validator run after `setValue` call
]);
}));
it('should run the async validator on stand alone controls and set status to `VALID`',
fakeAsync(() => {
const logs: string[] = [];
const c = new FormControl('', null, asyncValidator('new!'));
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
tick(1);
c.setValue('new!', {emitEvent: true});
tick(1);
expect(logs).toEqual([
'status: INVALID', // status change emitted as a result of initial async validator run
'value: "new!"', // value change emitted by `setValue`
'status: PENDING', // status change emitted by `setValue`
'status: VALID' // async validator run after `setValue` call
]);
}));
it('should run the async validator on stand alone controls, include `PENDING` and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c =
new FormControl('', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
tick(1);
c.setValue('new!', {emitEvent: true});
tick(1);
expect(logs).toEqual([
'status: INVALID', // status change emitted as a result of initial async validator run
'value: "new!"', // value change emitted by `setValue`
'status: PENDING', // status change emitted by `setValue`
'status: INVALID' // async validator run after `setValue` call
]);
}));
it('should run setValue before the initial async validator and set status to `VALID`',
fakeAsync(() => {
const logs: string[] = [];
const c = new FormControl('', null, asyncValidator('new!'));
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
c.setValue('new!', {emitEvent: true});
tick(1);
// The `setValue` call invoked synchronously cancels the initial run of the
// `asyncValidator` (which would cause the control status to be changed to `INVALID`), so
// the log contains only events after calling `setValue`.
expect(logs).toEqual([
'value: "new!"', // value change emitted by `setValue`
'status: PENDING', // status change emitted by `setValue`
'status: VALID' // async validator run after `setValue` call
]);
}));
it('should run setValue before the initial async validator and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c =
new FormControl('', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
c.setValue('new!', {emitEvent: true});
tick(1);
// The `setValue` call invoked synchronously cancels the initial run of the
// `asyncValidator` (which would cause the control status to be changed to `INVALID`), so
// the log contains only events after calling `setValue`.
expect(logs).toEqual([
'value: "new!"', // value change emitted by `setValue`
'status: PENDING', // status change emitted by `setValue`
'status: INVALID' // async validator run after `setValue` call
]);
}));
it('should cancel initial run of the async validator and not emit anything', fakeAsync(() => {
const logger: string[] = [];
const c =
new FormControl('', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c, logger);
expect(logger.length).toBe(0);
c.setValue('new!', {emitEvent: false});
tick(1);
// Because we are calling `setValue` with `emitEvent: false`, nothing is emitted
// and our logger remains empty
expect(logger).toEqual([]);
}));
it('should run the sync validator on stand alone controls and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c = new FormControl('new!', Validators.required);
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
tick(1);
c.setValue('', {emitEvent: true});
tick(1);
expect(logs).toEqual([
'value: ""', // value change emitted by `setValue`
'status: INVALID' // status change emitted by `setValue`
]);
}));
it('should run the sync validator on stand alone controls and set status to `VALID`',
fakeAsync(() => {
const logs: string[] = [];
const c = new FormControl('', Validators.required);
attachEventsLogger(c, logs);
expect(logs.length).toBe(0);
tick(1);
c.setValue('new!', {emitEvent: true});
tick(1);
expect(logs).toEqual([
'value: "new!"', // value change emitted by `setValue`
'status: VALID' // status change emitted by `setValue`
]);
}));
});
describe('combination of multiple form controls', () => {
it('should run the async validator on the FormControl added to the FormGroup and set status to `VALID`',
fakeAsync(() => {
const logs: string[] = [];
const c1 = new FormControl('one');
const g1 = new FormGroup({'one': c1});
// Initial state of the controls
expect(currentStateOf([c1, g1])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Control 1
{errors: null, pending: false, status: 'VALID'}, // Group
]);
attachEventsLogger(g1, logs, 'g1');
const c2 = new FormControl('new!', null, asyncValidator('new!'));
attachEventsLogger(c2, logs, 'c2');
// Initial state of the new control
expect(currentStateOf([c2])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Control 2
]);
expect(logs.length).toBe(0);
g1.setControl('one', c2);
tick(1);
expect(logs).toEqual([
'value (g1): {"one":"new!"}', // value change emitted by `setControl`
'status (g1): PENDING', // value change emitted by `setControl`
'status (c2): VALID', // async validator run after `setControl` call
'status (g1): VALID' // status changed from the `setControl` call
]);
// Final state of all controls
expect(currentStateOf([g1, c2])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Group
{errors: null, pending: false, status: 'VALID'}, // Control 2
]);
}));
it('should run the async validator on the FormControl added to the FormGroup and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c1 = new FormControl('one');
const g1 = new FormGroup({'one': c1});
// Initial state of the controls
expect(currentStateOf([c1, g1])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Control 1
{errors: null, pending: false, status: 'VALID'}, // Group
]);
attachEventsLogger(g1, logs, 'g1');
const c2 =
new FormControl('new!', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c2, logs, 'c2');
// Initial state of the new control
expect(currentStateOf([c2])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Control 2
]);
expect(logs.length).toBe(0);
g1.setControl('one', c2);
tick(1);
expect(logs).toEqual([
'value (g1): {"one":"new!"}',
'status (g1): PENDING', // g1 async validator is invoked after `g1.setControl` call
'status (c2): INVALID', // c2 async validator trigger at c2 init, completed with the
// `INVALID` status
'status (g1): INVALID' // g1 validator completed with the `INVALID` status
]);
// Final state of all controls
expect(currentStateOf([g1, c2])).toEqual([
{errors: null, pending: false, status: 'INVALID'}, // Group
{errors: {async: true}, pending: false, status: 'INVALID'}, // Control 2
]);
}));
it('should run the async validator at `FormControl` and `FormGroup` level and set status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c1 = new FormControl('one');
const g1 = new FormGroup(
{'one': c1}, null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
// Initial state of the controls
expect(currentStateOf([c1, g1])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Control 1
{errors: null, pending: true, status: 'PENDING'}, // Group
]);
attachEventsLogger(g1, logs, 'g1');
const c2 =
new FormControl('new!', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c2, logs, 'c2');
// Initial state of the new control
expect(currentStateOf([c2])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Control 2
]);
expect(logs.length).toBe(0);
g1.setControl('one', c2);
tick(1);
expect(logs).toEqual([
'value (g1): {"one":"new!"}',
'status (g1): PENDING', // g1 async validator is invoked after `g1.setControl` call
'status (c2): INVALID', // c2 async validator trigger at c2 init, completed with the
// `INVALID` status
'status (g1): PENDING', // c2 update triggered g1 to re-run validation
'status (g1): INVALID' // g1 validator completed with the `INVALID` status
]);
// Final state of all controls
expect(currentStateOf([g1, c2])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: {async: true}, pending: false, status: 'INVALID'}, // Control 2
]);
}));
it('should run the async validator on a `FormArray` and a `FormControl` and status to `INVALID`',
fakeAsync(() => {
const logs: string[] = [];
const c1 = new FormControl('one');
const g1 = new FormGroup(
{'one': c1}, null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
const fa =
new FormArray([g1], null!, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(g1, logs, 'g1');
// Initial state of the controls
expect(currentStateOf([c1, g1, fa])).toEqual([
{errors: null, pending: false, status: 'VALID'}, // Control 1
{errors: null, pending: true, status: 'PENDING'}, // Group
{errors: null, pending: true, status: 'PENDING'}, // FormArray
]);
attachEventsLogger(fa, logs, 'fa');
const c2 =
new FormControl('new!', null, simpleAsyncValidator({timeout: 1, shouldFail: true}));
attachEventsLogger(c2, logs, 'c2');
// Initial state of the new control
expect(currentStateOf([c2])).toEqual([
{errors: null, pending: true, status: 'PENDING'}, // Control 2
]);
expect(logs.length).toBe(0);
g1.setControl('one', c2);
tick(1);
expect(logs).toEqual([
'value (g1): {"one":"new!"}', // g1's call to `setControl` triggered value update
'status (g1): PENDING', // g1's call to `setControl` triggered status update
'value (fa): [{"one":"new!"}]', // g1 update triggers the `FormArray` value update
'status (fa): PENDING', // g1 update triggers the `FormArray` status update
'status (c2): INVALID', // async validator run after `setControl` call
'status (g1): PENDING', // async validator run after `setControl` call
'status (fa): PENDING', // async validator run after `setControl` call
'status (g1): INVALID', // g1 validator completed with the `INVALID` status
'status (fa): PENDING', // fa validator still running
'status (fa): INVALID' // fa validator completed with the `INVALID` status
]);
// Final state of all controls
expect(currentStateOf([g1, fa, c2])).toEqual([
{errors: {async: true}, pending: false, status: 'INVALID'}, // Group
{errors: {async: true}, pending: false, status: 'INVALID'}, // FormArray
{errors: {async: true}, pending: false, status: 'INVALID'}, // Control 2
]);
}));
});
});
describe('pending', () => {
let c: FormControl;
let g: FormGroup;
beforeEach(() => {
c = new FormControl('value');
g = new FormGroup({'one': c});
});
it('should be false after creating a control', () => {
expect(g.pending).toEqual(false);
});
it('should be true after changing the value of the control', () => {
c.markAsPending();
expect(g.pending).toEqual(true);
});
it('should not update the parent when onlySelf = true', () => {
c.markAsPending({onlySelf: true});
expect(g.pending).toEqual(false);
});
describe('status change events', () => {
let logger: string[];
beforeEach(() => {
logger = [];
g.statusChanges.subscribe((status) => logger.push(status));
});
it('should emit event after marking control as pending', () => {
c.markAsPending();
expect(logger).toEqual(['PENDING']);
});
it('should not emit event when onlySelf = true', () => {
c.markAsPending({onlySelf: true});
expect(logger).toEqual([]);
});
it('should not emit event when called with `emitEvent: false`', () => {
c.markAsPending({emitEvent: false});
expect(logger).toEqual([]);
});
it('should emit event when parent is markedAsPending', () => {
g.markAsPending();
expect(logger).toEqual(['PENDING']);
});
});
});
});
})();
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