angular-cn/modules/@angular/forms/test/template_integration_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 {Component, Input} from '@angular/core';
import {TestBed, async, fakeAsync, tick} from '@angular/core/testing';
import {ControlValueAccessor, FormsModule, NG_VALUE_ACCESSOR, NgForm} from '@angular/forms';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {dispatchEvent} from '@angular/platform-browser/testing/browser_util';
export function main() {
describe('template-driven forms integration tests', () => {
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [
StandaloneNgModel, NgModelForm, NgModelGroupForm, NgModelValidBinding, NgModelNgIfForm,
NgModelRadioForm, NgModelSelectForm, NgNoFormComp, InvalidNgModelNoName,
NgModelOptionsStandalone, NgModelCustomComp, NgModelCustomWrapper,
NgModelValidationBindings
],
imports: [FormsModule]
});
});
describe('basic functionality', () => {
it('should support ngModel for standalone fields', fakeAsync(() => {
const fixture = TestBed.createComponent(StandaloneNgModel);
fixture.componentInstance.name = 'oldValue';
fixture.detectChanges();
tick();
// model -> view
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(input.value).toEqual('oldValue');
input.value = 'updatedValue';
dispatchEvent(input, 'input');
tick();
// view -> model
expect(fixture.componentInstance.name).toEqual('updatedValue');
}));
it('should support ngModel registration with a parent form', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.componentInstance.name = 'Nancy';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value).toEqual({name: 'Nancy'});
expect(form.valid).toBe(false);
}));
it('should support ngModelGroup', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelGroupForm);
fixture.componentInstance.first = 'Nancy';
fixture.componentInstance.last = 'Drew';
fixture.componentInstance.email = 'some email';
fixture.detectChanges();
tick();
// model -> view
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.value).toEqual('Nancy');
expect(inputs[1].nativeElement.value).toEqual('Drew');
inputs[0].nativeElement.value = 'Carson';
dispatchEvent(inputs[0].nativeElement, 'input');
tick();
// view -> model
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value).toEqual({name: {first: 'Carson', last: 'Drew'}, email: 'some email'});
}));
it('should add controls and control groups to form control model', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelGroupForm);
fixture.componentInstance.first = 'Nancy';
fixture.componentInstance.last = 'Drew';
fixture.componentInstance.email = 'some email';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.get('name').value).toEqual({first: 'Nancy', last: 'Drew'});
expect(form.control.get('name.first').value).toEqual('Nancy');
expect(form.control.get('email').value).toEqual('some email');
}));
it('should remove controls and control groups from form control model', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelNgIfForm);
fixture.componentInstance.emailShowing = true;
fixture.componentInstance.first = 'Nancy';
fixture.componentInstance.email = 'some email';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.get('email').value).toEqual('some email');
expect(form.value).toEqual({name: {first: 'Nancy'}, email: 'some email'});
// should remove individual control successfully
fixture.componentInstance.emailShowing = false;
fixture.detectChanges();
tick();
expect(form.control.get('email')).toBe(null);
expect(form.value).toEqual({name: {first: 'Nancy'}});
expect(form.control.get('name').value).toEqual({first: 'Nancy'});
expect(form.control.get('name.first').value).toEqual('Nancy');
// should remove form group successfully
fixture.componentInstance.groupShowing = false;
fixture.detectChanges();
tick();
expect(form.control.get('name')).toBe(null);
expect(form.control.get('name.first')).toBe(null);
expect(form.value).toEqual({});
}));
it('should set status classes with ngModel', async(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.componentInstance.name = 'aa';
fixture.detectChanges();
fixture.whenStable().then(() => {
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
}));
it('should set status classes with ngModelGroup and ngForm', async(() => {
const fixture = TestBed.createComponent(NgModelGroupForm);
fixture.componentInstance.first = '';
fixture.detectChanges();
const form = fixture.debugElement.query(By.css('form')).nativeElement;
const modelGroup = fixture.debugElement.query(By.css('[ngModelGroup]')).nativeElement;
const input = fixture.debugElement.query(By.css('input')).nativeElement;
// ngModelGroup creates its control asynchronously
fixture.whenStable().then(() => {
fixture.detectChanges();
expect(sortedClassList(modelGroup)).toEqual([
'ng-invalid', 'ng-pristine', 'ng-untouched'
]);
expect(sortedClassList(form)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(modelGroup)).toEqual([
'ng-invalid', 'ng-pristine', 'ng-touched'
]);
expect(sortedClassList(form)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(modelGroup)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
expect(sortedClassList(form)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
}));
it('should not create a template-driven form when ngNoForm is used', () => {
const fixture = TestBed.createComponent(NgNoFormComp);
fixture.detectChanges();
expect(fixture.debugElement.children[0].providerTokens.length).toEqual(0);
});
});
describe('name and ngModelOptions', () => {
it('should throw if ngModel has a parent form but no name attr or standalone label', () => {
const fixture = TestBed.createComponent(InvalidNgModelNoName);
expect(() => fixture.detectChanges())
.toThrowError(new RegExp(`name attribute must be set`));
});
it('should not throw if ngModel has a parent form, no name attr, and a standalone label',
() => {
const fixture = TestBed.createComponent(NgModelOptionsStandalone);
expect(() => fixture.detectChanges()).not.toThrow();
});
it('should not register standalone ngModels with parent form', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelOptionsStandalone);
fixture.componentInstance.one = 'some data';
fixture.componentInstance.two = 'should not show';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const inputs = fixture.debugElement.queryAll(By.css('input'));
tick();
expect(form.value).toEqual({one: 'some data'});
expect(inputs[1].nativeElement.value).toEqual('should not show');
}));
it('should override name attribute with ngModelOptions name if provided', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.componentInstance.options = {name: 'override'};
fixture.componentInstance.name = 'some data';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value).toEqual({override: 'some data'});
}));
});
describe('submit and reset events', () => {
it('should emit ngSubmit event on submit', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.componentInstance.name = 'old';
const form = fixture.debugElement.query(By.css('form'));
dispatchEvent(form.nativeElement, 'submit');
tick();
expect(fixture.componentInstance.name).toEqual('submitted');
}));
it('should mark NgForm as submitted on submit event', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.submitted).toBe(false);
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
tick();
expect(form.submitted).toBe(true);
}));
it('should reset the form to empty when reset event is fired', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.componentInstance.name = 'should be cleared';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const formEl = fixture.debugElement.query(By.css('form'));
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.value).toBe('should be cleared'); // view value
expect(fixture.componentInstance.name).toBe('should be cleared'); // ngModel value
expect(form.value.name).toEqual('should be cleared'); // control value
dispatchEvent(formEl.nativeElement, 'reset');
fixture.detectChanges();
tick();
expect(input.nativeElement.value).toBe(''); // view value
expect(fixture.componentInstance.name).toBe(null); // ngModel value
expect(form.value.name).toEqual(null); // control value
}));
it('should reset the form submit state when reset button is clicked', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
const form = fixture.debugElement.children[0].injector.get(NgForm);
const formEl = fixture.debugElement.query(By.css('form'));
dispatchEvent(formEl.nativeElement, 'submit');
fixture.detectChanges();
tick();
expect(form.submitted).toBe(true);
dispatchEvent(formEl.nativeElement, 'reset');
fixture.detectChanges();
tick();
expect(form.submitted).toBe(false);
}));
});
describe('valueChange and statusChange events', () => {
it('should emit valueChanges and statusChanges on init', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
const form = fixture.debugElement.children[0].injector.get(NgForm);
fixture.componentInstance.name = 'aa';
fixture.detectChanges();
expect(form.valid).toEqual(true);
expect(form.value).toEqual({});
let formValidity: string;
let formValue: Object;
form.statusChanges.subscribe((status: string) => formValidity = status);
form.valueChanges.subscribe((value: string) => formValue = value);
tick();
expect(formValidity).toEqual('INVALID');
expect(formValue).toEqual({name: 'aa'});
}));
it('should mark controls dirty before emitting the value change event', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
const form = fixture.debugElement.children[0].injector.get(NgForm).form;
fixture.detectChanges();
tick();
form.get('name').valueChanges.subscribe(
() => { expect(form.get('name').dirty).toBe(true); });
const inputEl = fixture.debugElement.query(By.css('input')).nativeElement;
inputEl.value = 'newValue';
dispatchEvent(inputEl, 'input');
}));
it('should mark controls pristine before emitting the value change event when resetting ',
fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelForm);
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm).form;
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
const inputEl = fixture.debugElement.query(By.css('input')).nativeElement;
inputEl.value = 'newValue';
dispatchEvent(inputEl, 'input');
expect(form.get('name').pristine).toBe(false);
form.get('name').valueChanges.subscribe(
() => { expect(form.get('name').pristine).toBe(true); });
dispatchEvent(formEl, 'reset');
}));
});
describe('disabled controls', () => {
it('should not consider disabled controls in value or validation', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelGroupForm);
fixture.componentInstance.isDisabled = false;
fixture.componentInstance.first = '';
fixture.componentInstance.last = 'Drew';
fixture.componentInstance.email = 'some email';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value).toEqual({name: {first: '', last: 'Drew'}, email: 'some email'});
expect(form.valid).toBe(false);
expect(form.control.get('name.first').disabled).toBe(false);
fixture.componentInstance.isDisabled = true;
fixture.detectChanges();
tick();
expect(form.value).toEqual({name: {last: 'Drew'}, email: 'some email'});
expect(form.valid).toBe(true);
expect(form.control.get('name.first').disabled).toBe(true);
}));
it('should add disabled attribute in the UI if disable() is called programmatically',
fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelGroupForm);
fixture.componentInstance.isDisabled = false;
fixture.componentInstance.first = 'Nancy';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
form.control.get('name.first').disable();
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css(`[name="first"]`));
expect(input.nativeElement.disabled).toBe(true);
}));
it('should disable a custom control if disabled attr is added', async(() => {
const fixture = TestBed.createComponent(NgModelCustomWrapper);
fixture.componentInstance.name = 'Nancy';
fixture.componentInstance.isDisabled = true;
fixture.detectChanges();
fixture.whenStable().then(() => {
fixture.detectChanges();
fixture.whenStable().then(() => {
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.get('name').disabled).toBe(true);
const customInput = fixture.debugElement.query(By.css('[name="custom"]'));
expect(customInput.nativeElement.disabled).toEqual(true);
});
});
}));
it('should disable a control with unbound disabled attr', fakeAsync(() => {
TestBed.overrideComponent(NgModelForm, {
set: {
template: `
<form>
<input name="name" [(ngModel)]="name" disabled>
</form>
`,
}
});
const fixture = TestBed.createComponent(NgModelForm);
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.get('name').disabled).toBe(true);
const input = fixture.debugElement.query(By.css('input'));
expect(input.nativeElement.disabled).toEqual(true);
form.control.enable();
fixture.detectChanges();
tick();
expect(input.nativeElement.disabled).toEqual(false);
}));
it('should disable radio controls properly with programmatic call', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.componentInstance.food = 'fish';
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
form.control.get('food').disable();
tick();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.disabled).toBe(true);
expect(inputs[1].nativeElement.disabled).toBe(true);
expect(inputs[2].nativeElement.disabled).toBe(false);
expect(inputs[3].nativeElement.disabled).toBe(false);
form.control.disable();
tick();
expect(inputs[0].nativeElement.disabled).toBe(true);
expect(inputs[1].nativeElement.disabled).toBe(true);
expect(inputs[2].nativeElement.disabled).toBe(true);
expect(inputs[3].nativeElement.disabled).toBe(true);
form.control.enable();
tick();
expect(inputs[0].nativeElement.disabled).toBe(false);
expect(inputs[1].nativeElement.disabled).toBe(false);
expect(inputs[2].nativeElement.disabled).toBe(false);
expect(inputs[3].nativeElement.disabled).toBe(false);
}));
});
describe('radio controls', () => {
it('should support <type=radio>', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.componentInstance.food = 'fish';
fixture.detectChanges();
tick();
// model -> view
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
dispatchEvent(inputs[0].nativeElement, 'change');
tick();
// view -> model
expect(fixture.componentInstance.food).toEqual('chicken');
expect(inputs[1].nativeElement.checked).toEqual(false);
}));
it('should support multiple named <type=radio> groups', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.componentInstance.food = 'fish';
fixture.componentInstance.drink = 'sprite';
fixture.detectChanges();
tick();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(true);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
dispatchEvent(inputs[0].nativeElement, 'change');
tick();
expect(fixture.componentInstance.food).toEqual('chicken');
expect(fixture.componentInstance.drink).toEqual('sprite');
expect(inputs[1].nativeElement.checked).toEqual(false);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(true);
}));
it('should support initial undefined value', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.detectChanges();
tick();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
expect(inputs[2].nativeElement.checked).toEqual(false);
expect(inputs[3].nativeElement.checked).toEqual(false);
}));
it('should support resetting properly', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.componentInstance.food = 'chicken';
fixture.detectChanges();
tick();
const form = fixture.debugElement.query(By.css('form'));
dispatchEvent(form.nativeElement, 'reset');
fixture.detectChanges();
tick();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
}));
it('should support setting value to null and undefined', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelRadioForm);
fixture.componentInstance.food = 'chicken';
fixture.detectChanges();
tick();
fixture.componentInstance.food = null;
fixture.detectChanges();
tick();
const inputs = fixture.debugElement.queryAll(By.css('input'));
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
fixture.componentInstance.food = 'chicken';
fixture.detectChanges();
tick();
fixture.componentInstance.food = undefined;
fixture.detectChanges();
tick();
expect(inputs[0].nativeElement.checked).toEqual(false);
expect(inputs[1].nativeElement.checked).toEqual(false);
}));
});
describe('select controls', () => {
it('with option values that are objects', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelSelectForm);
const comp = fixture.componentInstance;
comp.cities = [{'name': 'SF'}, {'name': 'NYC'}, {'name': 'Buffalo'}];
comp.selectedCity = comp.cities[1];
fixture.detectChanges();
tick();
const select = fixture.debugElement.query(By.css('select'));
const nycOption = fixture.debugElement.queryAll(By.css('option'))[1];
// model -> view
expect(select.nativeElement.value).toEqual('1: Object');
expect(nycOption.nativeElement.selected).toBe(true);
select.nativeElement.value = '2: Object';
dispatchEvent(select.nativeElement, 'change');
fixture.detectChanges();
tick();
// view -> model
expect(comp.selectedCity['name']).toEqual('Buffalo');
}));
it('when new options are added', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelSelectForm);
const comp = fixture.componentInstance;
comp.cities = [{'name': 'SF'}, {'name': 'NYC'}];
comp.selectedCity = comp.cities[1];
fixture.detectChanges();
tick();
comp.cities.push({'name': 'Buffalo'});
comp.selectedCity = comp.cities[2];
fixture.detectChanges();
tick();
const select = fixture.debugElement.query(By.css('select'));
const buffalo = fixture.debugElement.queryAll(By.css('option'))[2];
expect(select.nativeElement.value).toEqual('2: Object');
expect(buffalo.nativeElement.selected).toBe(true);
}));
it('when options are removed', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelSelectForm);
const comp = fixture.componentInstance;
comp.cities = [{'name': 'SF'}, {'name': 'NYC'}];
comp.selectedCity = comp.cities[1];
fixture.detectChanges();
tick();
const select = fixture.debugElement.query(By.css('select'));
expect(select.nativeElement.value).toEqual('1: Object');
comp.cities.pop();
fixture.detectChanges();
tick();
expect(select.nativeElement.value).not.toEqual('1: Object');
}));
it('when option values have same content, but different identities', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelSelectForm);
const comp = fixture.componentInstance;
comp.cities = [{'name': 'SF'}, {'name': 'NYC'}, {'name': 'NYC'}];
comp.selectedCity = comp.cities[0];
fixture.detectChanges();
comp.selectedCity = comp.cities[2];
fixture.detectChanges();
tick();
const select = fixture.debugElement.query(By.css('select'));
const secondNYC = fixture.debugElement.queryAll(By.css('option'))[2];
expect(select.nativeElement.value).toEqual('2: Object');
expect(secondNYC.nativeElement.selected).toBe(true);
}));
});
describe('custom value accessors', () => {
it('should support standard writing to view and model', async(() => {
const fixture = TestBed.createComponent(NgModelCustomWrapper);
fixture.componentInstance.name = 'Nancy';
fixture.detectChanges();
fixture.whenStable().then(() => {
fixture.detectChanges();
fixture.whenStable().then(() => {
// model -> view
const customInput = fixture.debugElement.query(By.css('[name="custom"]'));
expect(customInput.nativeElement.value).toEqual('Nancy');
customInput.nativeElement.value = 'Carson';
dispatchEvent(customInput.nativeElement, 'input');
fixture.detectChanges();
// view -> model
expect(fixture.componentInstance.name).toEqual('Carson');
});
});
}));
});
describe('validation directives', () => {
it('should support dir validators using bindings', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelValidationBindings);
fixture.componentInstance.required = true;
fixture.componentInstance.minLen = 3;
fixture.componentInstance.maxLen = 3;
fixture.componentInstance.pattern = '.{3,}';
fixture.detectChanges();
tick();
const required = fixture.debugElement.query(By.css('[name=required]'));
const minLength = fixture.debugElement.query(By.css('[name=minlength]'));
const maxLength = fixture.debugElement.query(By.css('[name=maxlength]'));
const pattern = fixture.debugElement.query(By.css('[name=pattern]'));
required.nativeElement.value = '';
minLength.nativeElement.value = '1';
maxLength.nativeElement.value = '1234';
pattern.nativeElement.value = '12';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
fixture.detectChanges();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.hasError('required', ['required'])).toEqual(true);
expect(form.control.hasError('minlength', ['minlength'])).toEqual(true);
expect(form.control.hasError('maxlength', ['maxlength'])).toEqual(true);
expect(form.control.hasError('pattern', ['pattern'])).toEqual(true);
required.nativeElement.value = '1';
minLength.nativeElement.value = '123';
maxLength.nativeElement.value = '123';
pattern.nativeElement.value = '123';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.valid).toEqual(true);
}));
it('changes on bound properties should change the validation state of the form',
fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelValidationBindings);
fixture.detectChanges();
tick();
const required = fixture.debugElement.query(By.css('[name=required]'));
const minLength = fixture.debugElement.query(By.css('[name=minlength]'));
const maxLength = fixture.debugElement.query(By.css('[name=maxlength]'));
const pattern = fixture.debugElement.query(By.css('[name=pattern]'));
required.nativeElement.value = '';
minLength.nativeElement.value = '1';
maxLength.nativeElement.value = '1234';
pattern.nativeElement.value = '12';
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.control.hasError('required', ['required'])).toEqual(false);
expect(form.control.hasError('minlength', ['minlength'])).toEqual(false);
expect(form.control.hasError('maxlength', ['maxlength'])).toEqual(false);
expect(form.control.hasError('pattern', ['pattern'])).toEqual(false);
expect(form.valid).toEqual(true);
fixture.componentInstance.required = true;
fixture.componentInstance.minLen = 3;
fixture.componentInstance.maxLen = 3;
fixture.componentInstance.pattern = '.{3,}';
fixture.detectChanges();
dispatchEvent(required.nativeElement, 'input');
dispatchEvent(minLength.nativeElement, 'input');
dispatchEvent(maxLength.nativeElement, 'input');
dispatchEvent(pattern.nativeElement, 'input');
expect(form.control.hasError('required', ['required'])).toEqual(true);
expect(form.control.hasError('minlength', ['minlength'])).toEqual(true);
expect(form.control.hasError('maxlength', ['maxlength'])).toEqual(true);
expect(form.control.hasError('pattern', ['pattern'])).toEqual(true);
expect(form.valid).toEqual(false);
expect(required.nativeElement.getAttribute('required')).toEqual('');
expect(fixture.componentInstance.minLen.toString())
.toEqual(minLength.nativeElement.getAttribute('minlength'));
expect(fixture.componentInstance.maxLen.toString())
.toEqual(maxLength.nativeElement.getAttribute('maxlength'));
expect(fixture.componentInstance.pattern.toString())
.toEqual(pattern.nativeElement.getAttribute('pattern'));
fixture.componentInstance.required = false;
fixture.componentInstance.minLen = null;
fixture.componentInstance.maxLen = null;
fixture.componentInstance.pattern = null;
fixture.detectChanges();
expect(form.control.hasError('required', ['required'])).toEqual(false);
expect(form.control.hasError('minlength', ['minlength'])).toEqual(false);
expect(form.control.hasError('maxlength', ['maxlength'])).toEqual(false);
expect(form.control.hasError('pattern', ['pattern'])).toEqual(false);
expect(form.valid).toEqual(true);
expect(required.nativeElement.getAttribute('required')).toEqual(null);
expect(required.nativeElement.getAttribute('minlength')).toEqual(null);
expect(required.nativeElement.getAttribute('maxlength')).toEqual(null);
expect(required.nativeElement.getAttribute('pattern')).toEqual(null);
}));
});
describe('ngModel corner cases', () => {
it('should update the view when the model is set back to what used to be in the view',
fakeAsync(() => {
const fixture = TestBed.createComponent(StandaloneNgModel);
fixture.componentInstance.name = '';
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'aa';
input.selectionStart = 1;
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.name).toEqual('aa');
// Programmatically update the input value to be "bb".
fixture.componentInstance.name = 'bb';
fixture.detectChanges();
tick();
expect(input.value).toEqual('bb');
// Programatically set it back to "aa".
fixture.componentInstance.name = 'aa';
fixture.detectChanges();
tick();
expect(input.value).toEqual('aa');
}));
it('should not crash when validity is checked from a binding', fakeAsync(() => {
const fixture = TestBed.createComponent(NgModelValidBinding);
tick();
expect(() => fixture.detectChanges()).not.toThrowError();
}));
});
});
};
@Component({
selector: 'standalone-ng-model',
template: `
<input type="text" [(ngModel)]="name">
`
})
class StandaloneNgModel {
name: string;
}
@Component({
selector: 'ng-model-form',
template: `
<form (ngSubmit)="name='submitted'" (reset)="onReset()">
<input name="name" [(ngModel)]="name" minlength="10" [ngModelOptions]="options">
</form>
`
})
class NgModelForm {
name: string;
options = {};
onReset() {}
}
@Component({
selector: 'ng-model-group-form',
template: `
<form>
<div ngModelGroup="name">
<input name="first" [(ngModel)]="first" required [disabled]="isDisabled">
<input name="last" [(ngModel)]="last">
</div>
<input name="email" [(ngModel)]="email">
</form>
`
})
class NgModelGroupForm {
first: string;
last: string;
email: string;
isDisabled: boolean;
}
@Component({
selector: 'ng-model-valid-binding',
template: `
<form>
<div ngModelGroup="name" #group="ngModelGroup">
<input name="first" [(ngModel)]="first" required>
{{ group.valid }}
</div>
</form>
`
})
class NgModelValidBinding {
first: string;
}
@Component({
selector: 'ng-model-ngif-form',
template: `
<form>
<div ngModelGroup="name" *ngIf="groupShowing">
<input name="first" [(ngModel)]="first">
</div>
<input name="email" [(ngModel)]="email" *ngIf="emailShowing">
</form>
`
})
class NgModelNgIfForm {
first: string;
groupShowing = true;
emailShowing = true;
email: string;
}
@Component({
selector: 'ng-no-form',
template: `
<form ngNoForm>
<input name="name">
</form>
`
})
class NgNoFormComp {
}
@Component({
selector: 'invalid-ng-model-noname',
template: `
<form>
<input [(ngModel)]="name">
</form>
`
})
class InvalidNgModelNoName {
}
@Component({
selector: 'ng-model-options-standalone',
template: `
<form>
<input name="one" [(ngModel)]="one">
<input [(ngModel)]="two" [ngModelOptions]="{standalone: true}">
</form>
`
})
class NgModelOptionsStandalone {
one: string;
two: string;
}
@Component({
selector: 'ng-model-radio-form',
template: `
<form>
<input type="radio" name="food" [(ngModel)]="food" value="chicken">
<input type="radio" name="food" [(ngModel)]="food" value="fish">
<input type="radio" name="drink" [(ngModel)]="drink" value="cola">
<input type="radio" name="drink" [(ngModel)]="drink" value="sprite">
</form>
`
})
class NgModelRadioForm {
food: string;
drink: string;
}
@Component({
selector: 'ng-model-select-form',
template: `
<select [(ngModel)]="selectedCity">
<option *ngFor="let c of cities" [ngValue]="c"> {{c.name}} </option>
</select>
`
})
class NgModelSelectForm {
selectedCity: {[k: string]: string} = {};
cities: any[] = [];
}
@Component({
selector: 'ng-model-custom-comp',
template: `
<input name="custom" [(ngModel)]="model" (ngModelChange)="changeFn($event)" [disabled]="isDisabled">
`,
providers: [{provide: NG_VALUE_ACCESSOR, multi: true, useExisting: NgModelCustomComp}]
})
class NgModelCustomComp implements ControlValueAccessor {
model: string;
@Input('disabled') isDisabled: boolean = false;
changeFn: (value: any) => void;
writeValue(value: any) { this.model = value; }
registerOnChange(fn: (value: any) => void) { this.changeFn = fn; }
registerOnTouched() {}
setDisabledState(isDisabled: boolean) { this.isDisabled = isDisabled; }
}
@Component({
selector: 'ng-model-custom-wrapper',
template: `
<form>
<ng-model-custom-comp name="name" [(ngModel)]="name" [disabled]="isDisabled"></ng-model-custom-comp>
</form>
`
})
class NgModelCustomWrapper {
name: string;
isDisabled = false;
}
@Component({
selector: 'ng-model-validation-bindings',
template: `
<form>
<input name="required" ngModel [required]="required">
<input name="minlength" ngModel [minlength]="minLen">
<input name="maxlength" ngModel [maxlength]="maxLen">
<input name="pattern" ngModel [pattern]="pattern">
</form>
`
})
class NgModelValidationBindings {
required: boolean;
minLen: number;
maxLen: number;
pattern: string;
}
function sortedClassList(el: HTMLElement) {
const l = getDOM().classList(el);
l.sort();
return l;
}