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Copy pathform_array_spec.ts
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1008 lines (783 loc) · 31.5 KB
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/**
* @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 {fakeAsync, tick} from '@angular/core/testing';
import {AsyncTestCompleter, beforeEach, describe, inject, it} from '@angular/core/testing/src/testing_internal';
import {AbstractControl, FormArray, FormControl, FormGroup} from '@angular/forms';
import {Validators} from '../src/validators';
export function main() {
function asyncValidator(expected: string, timeouts = {}) {
return (c: AbstractControl) => {
let resolve: (result: any) => void = undefined !;
const promise = new Promise(res => { resolve = res; });
const t = (timeouts as any)[c.value] != null ? (timeouts as any)[c.value] : 0;
const res = c.value != expected ? {'async': true} : null;
if (t == 0) {
resolve(res);
} else {
setTimeout(() => { resolve(res); }, t);
}
return promise;
};
}
describe('FormArray', () => {
describe('adding/removing', () => {
let a: FormArray;
let c1: FormControl, c2: FormControl, c3: FormControl;
beforeEach(() => {
a = new FormArray([]);
c1 = new FormControl(1);
c2 = new FormControl(2);
c3 = new FormControl(3);
});
it('should support pushing', () => {
a.push(c1);
expect(a.length).toEqual(1);
expect(a.controls).toEqual([c1]);
});
it('should support removing', () => {
a.push(c1);
a.push(c2);
a.push(c3);
a.removeAt(1);
expect(a.controls).toEqual([c1, c3]);
});
it('should support inserting', () => {
a.push(c1);
a.push(c3);
a.insert(1, c2);
expect(a.controls).toEqual([c1, c2, c3]);
});
});
describe('value', () => {
it('should be the reduced value of the child controls', () => {
const a = new FormArray([new FormControl(1), new FormControl(2)]);
expect(a.value).toEqual([1, 2]);
});
it('should be an empty array when there are no child controls', () => {
const a = new FormArray([]);
expect(a.value).toEqual([]);
});
});
describe('getRawValue()', () => {
let a: FormArray;
it('should work with nested form groups/arrays', () => {
a = new FormArray([
new FormGroup({'c2': new FormControl('v2'), 'c3': new FormControl('v3')}),
new FormArray([new FormControl('v4'), new FormControl('v5')])
]);
a.at(0).get('c3') !.disable();
(a.at(1) as FormArray).at(1).disable();
expect(a.getRawValue()).toEqual([{'c2': 'v2', 'c3': 'v3'}, ['v4', 'v5']]);
});
});
describe('setValue', () => {
let c: FormControl, c2: FormControl, a: FormArray;
beforeEach(() => {
c = new FormControl('');
c2 = new FormControl('');
a = new FormArray([c, c2]);
});
it('should set its own value', () => {
a.setValue(['one', 'two']);
expect(a.value).toEqual(['one', 'two']);
});
it('should set child values', () => {
a.setValue(['one', 'two']);
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
});
it('should set values for disabled child controls', () => {
c2.disable();
a.setValue(['one', 'two']);
expect(c2.value).toEqual('two');
expect(a.value).toEqual(['one']);
expect(a.getRawValue()).toEqual(['one', 'two']);
});
it('should set value for disabled arrays', () => {
a.disable();
a.setValue(['one', 'two']);
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
expect(a.value).toEqual(['one', 'two']);
});
it('should set parent values', () => {
const form = new FormGroup({'parent': a});
a.setValue(['one', 'two']);
expect(form.value).toEqual({'parent': ['one', 'two']});
});
it('should not update the parent explicitly specified', () => {
const form = new FormGroup({'parent': a});
a.setValue(['one', 'two'], {onlySelf: true});
expect(form.value).toEqual({parent: ['', '']});
});
it('should throw if fields are missing from supplied value (subset)', () => {
expect(() => a.setValue([, 'two']))
.toThrowError(new RegExp(`Must supply a value for form control at index: 0`));
});
it('should throw if a value is provided for a missing control (superset)', () => {
expect(() => a.setValue([
'one', 'two', 'three'
])).toThrowError(new RegExp(`Cannot find form control at index 2`));
});
it('should throw if a value is not provided for a disabled control', () => {
c2.disable();
expect(() => a.setValue(['one']))
.toThrowError(new RegExp(`Must supply a value for form control at index: 1`));
});
it('should throw if no controls are set yet', () => {
const empty = new FormArray([]);
expect(() => empty.setValue(['one']))
.toThrowError(new RegExp(`no form controls registered with this array`));
});
describe('setValue() events', () => {
let form: FormGroup;
let logger: any[];
beforeEach(() => {
form = new FormGroup({'parent': a});
logger = [];
});
it('should emit one valueChange event per control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
a.valueChanges.subscribe(() => logger.push('array'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
a.setValue(['one', 'two']);
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
it('should not fire an event when explicitly specified', fakeAsync(() => {
form.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c2.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.setValue(['one', 'two'], {emitEvent: false});
tick();
}));
it('should emit one statusChange event per control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
a.statusChanges.subscribe(() => logger.push('array'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
a.setValue(['one', 'two']);
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
});
});
describe('patchValue', () => {
let c: FormControl, c2: FormControl, a: FormArray;
beforeEach(() => {
c = new FormControl('');
c2 = new FormControl('');
a = new FormArray([c, c2]);
});
it('should set its own value', () => {
a.patchValue(['one', 'two']);
expect(a.value).toEqual(['one', 'two']);
});
it('should set child values', () => {
a.patchValue(['one', 'two']);
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
});
it('should patch disabled control values', () => {
c2.disable();
a.patchValue(['one', 'two']);
expect(c2.value).toEqual('two');
expect(a.value).toEqual(['one']);
expect(a.getRawValue()).toEqual(['one', 'two']);
});
it('should patch disabled control arrays', () => {
a.disable();
a.patchValue(['one', 'two']);
expect(c.value).toEqual('one');
expect(c2.value).toEqual('two');
expect(a.value).toEqual(['one', 'two']);
});
it('should set parent values', () => {
const form = new FormGroup({'parent': a});
a.patchValue(['one', 'two']);
expect(form.value).toEqual({'parent': ['one', 'two']});
});
it('should not update the parent explicitly specified', () => {
const form = new FormGroup({'parent': a});
a.patchValue(['one', 'two'], {onlySelf: true});
expect(form.value).toEqual({parent: ['', '']});
});
it('should ignore fields that are missing from supplied value (subset)', () => {
a.patchValue([, 'two']);
expect(a.value).toEqual(['', 'two']);
});
it('should not ignore fields that are null', () => {
a.patchValue([null]);
expect(a.value).toEqual([null, '']);
});
it('should ignore any value provided for a missing control (superset)', () => {
a.patchValue([, , 'three']);
expect(a.value).toEqual(['', '']);
});
describe('patchValue() events', () => {
let form: FormGroup;
let logger: any[];
beforeEach(() => {
form = new FormGroup({'parent': a});
logger = [];
});
it('should emit one valueChange event per control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
a.valueChanges.subscribe(() => logger.push('array'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
a.patchValue(['one', 'two']);
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
it('should not emit valueChange events for skipped controls', () => {
form.valueChanges.subscribe(() => logger.push('form'));
a.valueChanges.subscribe(() => logger.push('array'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
a.patchValue(['one']);
expect(logger).toEqual(['control1', 'array', 'form']);
});
it('should not fire an event when explicitly specified', fakeAsync(() => {
form.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c2.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.patchValue(['one', 'two'], {emitEvent: false});
tick();
}));
it('should emit one statusChange event per control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
a.statusChanges.subscribe(() => logger.push('array'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
a.patchValue(['one', 'two']);
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
});
});
describe('reset()', () => {
let c: FormControl, c2: FormControl, a: FormArray;
beforeEach(() => {
c = new FormControl('initial value');
c2 = new FormControl('');
a = new FormArray([c, c2]);
});
it('should set its own value if value passed', () => {
a.setValue(['new value', 'new value']);
a.reset(['initial value', '']);
expect(a.value).toEqual(['initial value', '']);
});
it('should not update the parent when explicitly specified', () => {
const form = new FormGroup({'a': a});
a.reset(['one', 'two'], {onlySelf: true});
expect(form.value).toEqual({a: ['initial value', '']});
});
it('should set its own value if boxed value passed', () => {
a.setValue(['new value', 'new value']);
a.reset([{value: 'initial value', disabled: false}, '']);
expect(a.value).toEqual(['initial value', '']);
});
it('should clear its own value if no value passed', () => {
a.setValue(['new value', 'new value']);
a.reset();
expect(a.value).toEqual([null, null]);
});
it('should set the value of each of its child controls if value passed', () => {
a.setValue(['new value', 'new value']);
a.reset(['initial value', '']);
expect(c.value).toBe('initial value');
expect(c2.value).toBe('');
});
it('should clear the value of each of its child controls if no value', () => {
a.setValue(['new value', 'new value']);
a.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({'a': a});
a.setValue(['new value', 'new value']);
a.reset(['initial value', '']);
expect(form.value).toEqual({'a': ['initial value', '']});
});
it('should clear the value of its parent if no value passed', () => {
const form = new FormGroup({'a': a});
a.setValue(['new value', 'new value']);
a.reset();
expect(form.value).toEqual({'a': [null, null]});
});
it('should mark itself as pristine', () => {
a.markAsDirty();
expect(a.pristine).toBe(false);
a.reset();
expect(a.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);
a.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({'a': a, 'c3': c3});
a.markAsDirty();
expect(form.pristine).toBe(false);
a.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({'a': a, 'c3': c3});
a.markAsDirty();
c3.markAsDirty();
expect(form.pristine).toBe(false);
a.reset();
expect(form.pristine).toBe(false);
});
it('should mark itself as untouched', () => {
a.markAsTouched();
expect(a.untouched).toBe(false);
a.reset();
expect(a.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);
a.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({'a': a, 'c3': c3});
a.markAsTouched();
expect(form.untouched).toBe(false);
a.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({'a': a, 'c3': c3});
a.markAsTouched();
c3.markAsTouched();
expect(form.untouched).toBe(false);
a.reset();
expect(form.untouched).toBe(false);
});
it('should retain previous disabled state', () => {
a.disable();
a.reset();
expect(a.disabled).toBe(true);
});
it('should set child disabled state if boxed value passed', () => {
a.disable();
a.reset([{value: '', disabled: false}, '']);
expect(c.disabled).toBe(false);
expect(a.disabled).toBe(false);
});
describe('reset() events', () => {
let form: FormGroup, c3: FormControl, logger: any[];
beforeEach(() => {
c3 = new FormControl('');
form = new FormGroup({'a': a, 'c3': c3});
logger = [];
});
it('should emit one valueChange event per reset control', () => {
form.valueChanges.subscribe(() => logger.push('form'));
a.valueChanges.subscribe(() => logger.push('array'));
c.valueChanges.subscribe(() => logger.push('control1'));
c2.valueChanges.subscribe(() => logger.push('control2'));
c3.valueChanges.subscribe(() => logger.push('control3'));
a.reset();
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
it('should not fire an event when explicitly specified', fakeAsync(() => {
form.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c2.valueChanges.subscribe((value) => { throw 'Should not happen'; });
c3.valueChanges.subscribe((value) => { throw 'Should not happen'; });
a.reset([], {emitEvent: false});
tick();
}));
it('should emit one statusChange event per reset control', () => {
form.statusChanges.subscribe(() => logger.push('form'));
a.statusChanges.subscribe(() => logger.push('array'));
c.statusChanges.subscribe(() => logger.push('control1'));
c2.statusChanges.subscribe(() => logger.push('control2'));
c3.statusChanges.subscribe(() => logger.push('control3'));
a.reset();
expect(logger).toEqual(['control1', 'control2', 'array', 'form']);
});
});
});
describe('errors', () => {
it('should run the validator when the value changes', () => {
const simpleValidator = (c: FormArray) =>
c.controls[0].value != 'correct' ? {'broken': true} : null;
const c = new FormControl(null);
const g = new FormArray([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});
});
});
describe('dirty', () => {
let c: FormControl;
let a: FormArray;
beforeEach(() => {
c = new FormControl('value');
a = new FormArray([c]);
});
it('should be false after creating a control', () => { expect(a.dirty).toEqual(false); });
it('should be true after changing the value of the control', () => {
c.markAsDirty();
expect(a.dirty).toEqual(true);
});
});
describe('touched', () => {
let c: FormControl;
let a: FormArray;
beforeEach(() => {
c = new FormControl('value');
a = new FormArray([c]);
});
it('should be false after creating a control', () => { expect(a.touched).toEqual(false); });
it('should be true after child control is marked as touched', () => {
c.markAsTouched();
expect(a.touched).toEqual(true);
});
});
describe('pending', () => {
let c: FormControl;
let a: FormArray;
beforeEach(() => {
c = new FormControl('value');
a = new FormArray([c]);
});
it('should be false after creating a control', () => {
expect(c.pending).toEqual(false);
expect(a.pending).toEqual(false);
});
it('should be true after changing the value of the control', () => {
c.markAsPending();
expect(c.pending).toEqual(true);
expect(a.pending).toEqual(true);
});
it('should not update the parent when onlySelf = true', () => {
c.markAsPending({onlySelf: true});
expect(c.pending).toEqual(true);
expect(a.pending).toEqual(false);
});
});
describe('valueChanges', () => {
let a: FormArray;
let c1: any /** TODO #9100 */, c2: any /** TODO #9100 */;
beforeEach(() => {
c1 = new FormControl('old1');
c2 = new FormControl('old2');
a = new FormArray([c1, c2]);
});
it('should fire an event after the value has been updated',
inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
a.valueChanges.subscribe({
next: (value: any) => {
expect(a.value).toEqual(['new1', 'old2']);
expect(value).toEqual(['new1', 'old2']);
async.done();
}
});
c1.setValue('new1');
}));
it('should fire an event after the control\'s observable fired an event',
inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
let controlCallbackIsCalled = false;
c1.valueChanges.subscribe({next: (value: any) => { controlCallbackIsCalled = true; }});
a.valueChanges.subscribe({
next: (value: any) => {
expect(controlCallbackIsCalled).toBe(true);
async.done();
}
});
c1.setValue('new1');
}));
it('should fire an event when a control is removed',
inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
a.valueChanges.subscribe({
next: (value: any) => {
expect(value).toEqual(['old1']);
async.done();
}
});
a.removeAt(1);
}));
it('should fire an event when a control is added',
inject([AsyncTestCompleter], (async: AsyncTestCompleter) => {
a.removeAt(1);
a.valueChanges.subscribe({
next: (value: any) => {
expect(value).toEqual(['old1', 'old2']);
async.done();
}
});
a.push(c2);
}));
});
describe('get', () => {
it('should return null when path is null', () => {
const g = new FormGroup({});
expect(g.get(null !)).toEqual(null);
});
it('should return null when path is empty', () => {
const g = new FormGroup({});
expect(g.get([])).toEqual(null);
});
it('should return null when path is invalid', () => {
const g = new FormGroup({});
expect(g.get('invalid')).toEqual(null);
});
it('should return a child of a control group', () => {
const g = new FormGroup({
'one': new FormControl('111'),
'nested': new FormGroup({'two': new FormControl('222')})
});
expect(g.get(['one']) !.value).toEqual('111');
expect(g.get('one') !.value).toEqual('111');
expect(g.get(['nested', 'two']) !.value).toEqual('222');
expect(g.get('nested.two') !.value).toEqual('222');
});
it('should return an element of an array', () => {
const g = new FormGroup({'array': new FormArray([new FormControl('111')])});
expect(g.get(['array', 0]) !.value).toEqual('111');
});
});
describe('asyncValidator', () => {
it('should run the async validator', fakeAsync(() => {
const c = new FormControl('value');
const g = new FormArray([c], null !, asyncValidator('expected'));
expect(g.pending).toEqual(true);
tick(1);
expect(g.errors).toEqual({'async': true});
expect(g.pending).toEqual(false);
}));
});
describe('disable() & enable()', () => {
let a: FormArray;
let c: FormControl;
let c2: FormControl;
beforeEach(() => {
c = new FormControl(null);
c2 = new FormControl(null);
a = new FormArray([c, c2]);
});
it('should mark the array as disabled', () => {
expect(a.disabled).toBe(false);
expect(a.valid).toBe(true);
a.disable();
expect(a.disabled).toBe(true);
expect(a.valid).toBe(false);
a.enable();
expect(a.disabled).toBe(false);
expect(a.valid).toBe(true);
});
it('should set the array status as disabled', () => {
expect(a.status).toBe('VALID');
a.disable();
expect(a.status).toBe('DISABLED');
a.enable();
expect(a.status).toBe('VALID');
});
it('should mark children of the array as disabled', () => {
expect(c.disabled).toBe(false);
expect(c2.disabled).toBe(false);
a.disable();
expect(c.disabled).toBe(true);
expect(c2.disabled).toBe(true);
a.enable();
expect(c.disabled).toBe(false);
expect(c2.disabled).toBe(false);
});
it('should ignore disabled controls in validation', () => {
const g = new FormGroup({
nested: new FormArray([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 FormArray([new FormControl('one')]), two: new FormControl('two')});
expect(g.value).toEqual({'nested': ['one'], 'two': 'two'});
g.get('nested') !.disable();
expect(g.value).toEqual({'two': 'two'});
g.get('nested') !.enable();
expect(g.value).toEqual({'nested': ['one'], 'two': 'two'});
});
it('should ignore disabled controls when determining dirtiness', () => {
const g = new FormGroup({nested: a, two: new FormControl('two')});
g.get(['nested', 0]) !.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: a, two: new FormControl('two')});
g.get(['nested', 0]) !.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 arrays disabled when updating validity', () => {
const arr = new FormArray([]);
expect(arr.status).toEqual('VALID');
arr.disable();
expect(arr.status).toEqual('DISABLED');
arr.updateValueAndValidity();
expect(arr.status).toEqual('DISABLED');
arr.push(new FormControl({value: '', disabled: true}));
expect(arr.status).toEqual('DISABLED');
arr.push(new FormControl());
expect(arr.status).toEqual('VALID');
});
it('should re-enable empty, disabled arrays', () => {
const arr = new FormArray([]);
arr.disable();
expect(arr.status).toEqual('DISABLED');
arr.enable();
expect(arr.status).toEqual('VALID');
});
it('should not run validators on disabled controls', () => {
const validator = jasmine.createSpy('validator');
const arr = new FormArray([new FormControl()], validator);
expect(validator.calls.count()).toEqual(1);
arr.disable();
expect(validator.calls.count()).toEqual(1);
arr.setValue(['value']);
expect(validator.calls.count()).toEqual(1);
arr.enable();
expect(validator.calls.count()).toEqual(2);
});
describe('disabled errors', () => {
it('should clear out array errors when disabled', () => {
const arr = new FormArray([new FormControl()], () => ({'expected': true}));
expect(arr.errors).toEqual({'expected': true});
arr.disable();
expect(arr.errors).toEqual(null);
arr.enable();
expect(arr.errors).toEqual({'expected': true});
});
it('should re-populate array errors when enabled from a child', () => {
const arr = new FormArray([new FormControl()], () => ({'expected': true}));
arr.disable();
expect(arr.errors).toEqual(null);
arr.push(new FormControl());
expect(arr.errors).toEqual({'expected': true});
});
it('should clear out async array errors when disabled', fakeAsync(() => {
const arr = new FormArray([new FormControl()], null !, asyncValidator('expected'));
tick();
expect(arr.errors).toEqual({'async': true});
arr.disable();
expect(arr.errors).toEqual(null);
arr.enable();
tick();
expect(arr.errors).toEqual({'async': true});
}));
it('should re-populate async array errors when enabled from a child', fakeAsync(() => {
const arr = new FormArray([new FormControl()], null !, asyncValidator('expected'));
tick();
expect(arr.errors).toEqual({'async': true});
arr.disable();
expect(arr.errors).toEqual(null);
arr.push(new FormControl());
tick();
expect(arr.errors).toEqual({'async': true});
}));
});
describe('disabled events', () => {
let logger: string[];
let c: FormControl;
let a: FormArray;
let form: FormGroup;
beforeEach(() => {
logger = [];
c = new FormControl('', Validators.required);
a = new FormArray([c]);
form = new FormGroup({a: a});
});
it('should emit value change events in the right order', () => {
c.valueChanges.subscribe(() => logger.push('control'));
a.valueChanges.subscribe(() => logger.push('array'));
form.valueChanges.subscribe(() => logger.push('form'));
a.disable();
expect(logger).toEqual(['control', 'array', 'form']);
});
it('should emit status change events in the right order', () => {
c.statusChanges.subscribe(() => logger.push('control'));
a.statusChanges.subscribe(() => logger.push('array'));
form.statusChanges.subscribe(() => logger.push('form'));
a.disable();
expect(logger).toEqual(['control', 'array', 'form']);
});
});
describe('setControl()', () => {
let c: FormControl;
let a: FormArray;
beforeEach(() => {
c = new FormControl('one');
a = new FormArray([c]);
});
it('should replace existing control with new control', () => {
const c2 = new FormControl('new!', Validators.minLength(10));
a.setControl(0, c2);
expect(a.controls[0]).toEqual(c2);
expect(a.value).toEqual(['new!']);
expect(a.valid).toBe(false);
});
it('should add control if control did not exist before', () => {
const c2 = new FormControl('new!', Validators.minLength(10));
a.setControl(1, c2);
expect(a.controls[1]).toEqual(c2);
expect(a.value).toEqual(['one', 'new!']);
expect(a.valid).toBe(false);
});
it('should remove control if new control is null', () => {
a.setControl(0, null !);
expect(a.controls[0]).not.toBeDefined();
expect(a.value).toEqual([]);
});
it('should only emit value change event once', () => {
const logger: string[] = [];
const c2 = new FormControl('new!');
a.valueChanges.subscribe(() => logger.push('change!'));
a.setControl(0, c2);