angular-cn/packages/forms/test/form_builder_spec.ts

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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 {beforeEach, describe, expect, it} from '@angular/core/testing/src/testing_internal';
import {FormBuilder, Validators} from '@angular/forms';
import {of} from 'rxjs';
(function() {
function syncValidator(_: any /** TODO #9100 */): any /** TODO #9100 */ {
return null;
}
function asyncValidator(_: any /** TODO #9100 */) {
return Promise.resolve(null);
}
describe('Form Builder', () => {
let b: FormBuilder;
beforeEach(() => {
b = new FormBuilder();
});
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it('should create controls from a value', () => {
const g = b.group({'login': 'some value'});
expect(g.controls['login'].value).toEqual('some value');
});
it('should create controls from a boxed value', () => {
const g = b.group({'login': {value: 'some value', disabled: true}});
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expect(g.controls['login'].value).toEqual('some value');
expect(g.controls['login'].disabled).toEqual(true);
});
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it('should create controls from an array', () => {
const g = b.group(
{'login': ['some value'], 'password': ['some value', syncValidator, asyncValidator]});
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expect(g.controls['login'].value).toEqual('some value');
expect(g.controls['password'].value).toEqual('some value');
expect(g.controls['password'].validator).toEqual(syncValidator);
expect(g.controls['password'].asyncValidator).toEqual(asyncValidator);
});
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it('should use controls whose form state is a primitive value', () => {
const g = b.group({'login': b.control('some value', syncValidator, asyncValidator)});
expect(g.controls['login'].value).toEqual('some value');
expect(g.controls['login'].validator).toBe(syncValidator);
expect(g.controls['login'].asyncValidator).toBe(asyncValidator);
});
it('should support controls with no validators and whose form state is null', () => {
const g = b.group({'login': b.control(null)});
expect(g.controls['login'].value).toBeNull();
expect(g.controls['login'].validator).toBeNull();
expect(g.controls['login'].asyncValidator).toBeNull();
});
it('should support controls with validators and whose form state is null', () => {
const g = b.group({'login': b.control(null, syncValidator, asyncValidator)});
expect(g.controls['login'].value).toBeNull();
expect(g.controls['login'].validator).toBe(syncValidator);
expect(g.controls['login'].asyncValidator).toBe(asyncValidator);
});
it('should support controls with no validators and whose form state is undefined', () => {
const g = b.group({'login': b.control(undefined)});
expect(g.controls['login'].value).toBeNull();
expect(g.controls['login'].validator).toBeNull();
expect(g.controls['login'].asyncValidator).toBeNull();
});
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it('should support controls with validators and whose form state is undefined', () => {
const g = b.group({'login': b.control(undefined, syncValidator, asyncValidator)});
expect(g.controls['login'].value).toBeNull();
expect(g.controls['login'].validator).toBe(syncValidator);
expect(g.controls['login'].asyncValidator).toBe(asyncValidator);
});
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it('should create groups with a custom validator', () => {
const g = b.group(
{'login': 'some value'}, {'validator': syncValidator, 'asyncValidator': asyncValidator});
expect(g.validator).toBe(syncValidator);
expect(g.asyncValidator).toBe(asyncValidator);
});
it('should create control arrays', () => {
const c = b.control('three');
const e = b.control(null);
const f = b.control(undefined);
const a = b.array(
['one', ['two', syncValidator], c, b.array(['four']), e, f], syncValidator, asyncValidator);
expect(a.value).toEqual(['one', 'two', 'three', ['four'], null, null]);
expect(a.validator).toBe(syncValidator);
expect(a.asyncValidator).toBe(asyncValidator);
});
it('should create control arrays with multiple async validators', fakeAsync(() => {
function asyncValidator1() {
return of({'async1': true});
}
function asyncValidator2() {
return of({'async2': true});
}
const a = b.array(['one', 'two'], null, [asyncValidator1, asyncValidator2]);
expect(a.value).toEqual(['one', 'two']);
tick();
expect(a.errors).toEqual({'async1': true, 'async2': true});
}));
it('should create control arrays with multiple sync validators', () => {
function syncValidator1() {
return {'sync1': true};
}
function syncValidator2() {
return {'sync2': true};
}
const a = b.array(['one', 'two'], [syncValidator1, syncValidator2]);
expect(a.value).toEqual(['one', 'two']);
expect(a.errors).toEqual({'sync1': true, 'sync2': true});
});
describe('updateOn', () => {
it('should default to on change', () => {
const c = b.control('');
expect(c.updateOn).toEqual('change');
});
it('should default to on change with an options obj', () => {
const c = b.control('', {validators: Validators.required});
expect(c.updateOn).toEqual('change');
});
it('should set updateOn when updating on blur', () => {
const c = b.control('', {updateOn: 'blur'});
expect(c.updateOn).toEqual('blur');
});
describe('in groups and arrays', () => {
it('should default to group updateOn when not set in control', () => {
const g = b.group({one: b.control(''), two: b.control('')}, {updateOn: 'blur'});
expect(g.get('one')!.updateOn).toEqual('blur');
expect(g.get('two')!.updateOn).toEqual('blur');
});
it('should default to array updateOn when not set in control', () => {
const a = b.array([b.control(''), b.control('')], {updateOn: 'blur'});
expect(a.get([0])!.updateOn).toEqual('blur');
expect(a.get([1])!.updateOn).toEqual('blur');
});
it('should set updateOn with nested groups', () => {
const g = b.group(
{
group: b.group({one: b.control(''), two: b.control('')}),
},
{updateOn: 'blur'});
expect(g.get('group.one')!.updateOn).toEqual('blur');
expect(g.get('group.two')!.updateOn).toEqual('blur');
expect(g.get('group')!.updateOn).toEqual('blur');
});
it('should set updateOn with nested arrays', () => {
const g = b.group(
{
arr: b.array([b.control(''), b.control('')]),
},
{updateOn: 'blur'});
expect(g.get(['arr', 0])!.updateOn).toEqual('blur');
expect(g.get(['arr', 1])!.updateOn).toEqual('blur');
expect(g.get('arr')!.updateOn).toEqual('blur');
});
it('should allow control updateOn to override group updateOn', () => {
const g = b.group(
{one: b.control('', {updateOn: 'change'}), two: b.control('')}, {updateOn: 'blur'});
expect(g.get('one')!.updateOn).toEqual('change');
expect(g.get('two')!.updateOn).toEqual('blur');
});
it('should set updateOn with complex setup', () => {
const g = b.group({
group: b.group(
{one: b.control('', {updateOn: 'change'}), two: b.control('')}, {updateOn: 'blur'}),
groupTwo: b.group({one: b.control('')}, {updateOn: 'submit'}),
three: b.control('')
});
expect(g.get('group.one')!.updateOn).toEqual('change');
expect(g.get('group.two')!.updateOn).toEqual('blur');
expect(g.get('groupTwo.one')!.updateOn).toEqual('submit');
expect(g.get('three')!.updateOn).toEqual('change');
});
});
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});
});
})();