/
template_integration_spec.ts
2524 lines (2059 loc) Β· 96.6 KB
/
template_integration_spec.ts
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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 {Ι΅getDOM as getDOM} from '@angular/common';
import {Component, Directive, forwardRef, Input, Type, ViewChild} from '@angular/core';
import {ComponentFixture, fakeAsync, TestBed, tick, waitForAsync} from '@angular/core/testing';
import {AbstractControl, AsyncValidator, COMPOSITION_BUFFER_MODE, ControlValueAccessor, FormControl, FormsModule, MaxValidator, MinValidator, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NG_VALUE_ACCESSOR, NgForm, NgModel, Validator} from '@angular/forms';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {dispatchEvent, sortedClassList} from '@angular/platform-browser/testing/src/browser_util';
import {merge} from 'rxjs';
import {NgModelCustomComp, NgModelCustomWrapper} from './value_accessor_integration_spec';
{
describe('template-driven forms integration tests', () => {
function initTest<T>(component: Type<T>, ...directives: Type<any>[]): ComponentFixture<T> {
TestBed.configureTestingModule(
{declarations: [component, ...directives], imports: [FormsModule]});
return TestBed.createComponent(component);
}
describe('basic functionality', () => {
it('should support ngModel for standalone fields', fakeAsync(() => {
const fixture = initTest(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 = initTest(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 report properties which are written outside of template bindings', async () => {
// For example ngModel writes to `checked` property programmatically
// (template does not contain binding to `checked` explicitly)
// https://github.com/angular/angular/issues/33695
@Component({
selector: 'app-root',
template: `<input type="radio" value="one" [(ngModel)]="active"/>`
})
class AppComponent {
active = 'one';
}
TestBed.configureTestingModule({imports: [FormsModule], declarations: [AppComponent]});
const fixture = TestBed.createComponent(AppComponent);
// We need the Await as `ngModel` writes data asynchronously into the DOM
await fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input'));
expect(input.properties.checked).toBe(true);
expect(input.nativeElement.checked).toBe(true);
});
it('should add novalidate by default to form element', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.detectChanges();
tick();
const form = fixture.debugElement.query(By.css('form'));
expect(form.nativeElement.getAttribute('novalidate')).toEqual('');
}));
it('should be possible to use native validation and angular forms', fakeAsync(() => {
const fixture = initTest(NgModelNativeValidateForm);
fixture.detectChanges();
tick();
const form = fixture.debugElement.query(By.css('form'));
expect(form.nativeElement.hasAttribute('novalidate')).toEqual(false);
}));
it('should support ngModelGroup', fakeAsync(() => {
const fixture = initTest(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 = initTest(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 = initTest(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', waitForAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'aa';
fixture.detectChanges();
fixture.whenStable().then(() => {
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-invalid', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
}));
it('should set status classes with ngModel and async validators', fakeAsync(() => {
const fixture = initTest(NgModelAsyncValidation, NgAsyncValidator);
fixture.whenStable().then(() => {
fixture.detectChanges();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
expect(sortedClassList(input)).toEqual(['ng-pending', 'ng-pristine', 'ng-untouched']);
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-pending', 'ng-pristine', 'ng-touched']);
input.value = 'updatedValue';
dispatchEvent(input, 'input');
tick();
fixture.detectChanges();
expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
});
}));
it('should set status classes with ngModelGroup and ngForm', waitForAsync(() => {
const fixture = initTest(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 = initTest(NgNoFormComp);
fixture.detectChanges();
expect(fixture.debugElement.children[0].providerTokens!.length).toEqual(0);
});
it('should not add novalidate when ngNoForm is used', () => {
const fixture = initTest(NgNoFormComp);
fixture.detectChanges();
const form = fixture.debugElement.query(By.css('form'));
expect(form.nativeElement.hasAttribute('novalidate')).toEqual(false);
});
});
describe('name and ngModelOptions', () => {
it('should throw if ngModel has a parent form but no name attr or standalone label', () => {
const fixture = initTest(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 = initTest(NgModelOptionsStandalone);
expect(() => fixture.detectChanges()).not.toThrow();
});
it('should not register standalone ngModels with parent form', fakeAsync(() => {
const fixture = initTest(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 = initTest(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('updateOn', () => {
describe('blur', () => {
it('should default updateOn to change', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const name = form.control.get('name') as FormControl;
expect((name as any)._updateOn).toBeUndefined();
expect(name.updateOn).toEqual('change');
}));
it('should set control updateOn to blur properly', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const name = form.control.get('name') as FormControl;
expect((name as any)._updateOn).toEqual('blur');
expect(name.updateOn).toEqual('blur');
}));
it('should always set value and validity on init', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Nancy Drew';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(input.value).toEqual('Nancy Drew', 'Expected initial view value to be set.');
expect(form.value)
.toEqual({name: 'Nancy Drew'}, 'Expected initial control value be set.');
expect(form.valid).toBe(true, 'Expected validation to run on initial value.');
}));
it('should always set value programmatically right away', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Nancy Drew';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
fixture.componentInstance.name = 'Carson';
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(input.value)
.toEqual('Carson', 'Expected view value to update on programmatic change.');
expect(form.value)
.toEqual(
{name: 'Carson'}, 'Expected form value to update on programmatic change.');
expect(form.valid)
.toBe(false, 'Expected validation to run immediately on programmatic change.');
}));
it('should update value/validity on blur', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(fixture.componentInstance.name)
.toEqual('Carson', 'Expected value not to update on input.');
expect(form.valid).toBe(false, 'Expected validation not to run on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.name)
.toEqual('Nancy Drew', 'Expected value to update on blur.');
expect(form.valid).toBe(true, 'Expected validation to run on blur.');
}));
it('should wait for second blur to update value/validity again', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
dispatchEvent(input, 'blur');
fixture.detectChanges();
input.value = 'Carson';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(fixture.componentInstance.name)
.toEqual('Nancy Drew', 'Expected value not to update until another blur.');
expect(form.valid).toBe(true, 'Expected validation not to run until another blur.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.name)
.toEqual('Carson', 'Expected value to update on second blur.');
expect(form.valid).toBe(false, 'Expected validation to run on second blur.');
}));
it('should not update dirtiness until blur', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.dirty).toBe(false, 'Expected dirtiness not to update on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(form.dirty).toBe(true, 'Expected dirtiness to update on blur.');
}));
it('should not update touched until blur', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.touched).toBe(false, 'Expected touched not to update on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(form.touched).toBe(true, 'Expected touched to update on blur.');
}));
it('should not emit valueChanges or statusChanges until blur', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const values: any[] = [];
const form = fixture.debugElement.children[0].injector.get(NgForm);
const sub =
merge(form.valueChanges!, form.statusChanges!).subscribe(val => values.push(val));
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(values).toEqual([], 'Expected no valueChanges or statusChanges on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(values).toEqual(
[{name: 'Nancy Drew'}, 'VALID'],
'Expected valueChanges and statusChanges on blur.');
sub.unsubscribe();
}));
it('should not fire ngModelChange event on blur unless value has changed', fakeAsync(() => {
const fixture = initTest(NgModelChangesForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'blur'};
fixture.detectChanges();
tick();
expect(fixture.componentInstance.events)
.toEqual([], 'Expected ngModelChanges not to fire.');
const input = fixture.debugElement.query(By.css('input')).nativeElement;
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual([], 'Expected ngModelChanges not to fire if value unchanged.');
input.value = 'Carson';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.events)
.toEqual([], 'Expected ngModelChanges not to fire on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired'], 'Expected ngModelChanges to fire once blurred if value changed.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired'],
'Expected ngModelChanges not to fire again on blur unless value changed.');
input.value = 'Bess';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.events)
.toEqual(['fired'], 'Expected ngModelChanges not to fire on input after blur.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired', 'fired'],
'Expected ngModelChanges to fire again on blur if value changed.');
}));
});
describe('submit', () => {
it('should set control updateOn to submit properly', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const name = form.control.get('name') as FormControl;
expect((name as any)._updateOn).toEqual('submit');
expect(name.updateOn).toEqual('submit');
}));
it('should always set value and validity on init', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Nancy Drew';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(input.value).toEqual('Nancy Drew', 'Expected initial view value to be set.');
expect(form.value)
.toEqual({name: 'Nancy Drew'}, 'Expected initial control value be set.');
expect(form.valid).toBe(true, 'Expected validation to run on initial value.');
}));
it('should always set value programmatically right away', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Nancy Drew';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
fixture.componentInstance.name = 'Carson';
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(input.value)
.toEqual('Carson', 'Expected view value to update on programmatic change.');
expect(form.value)
.toEqual(
{name: 'Carson'}, 'Expected form value to update on programmatic change.');
expect(form.valid)
.toBe(false, 'Expected validation to run immediately on programmatic change.');
}));
it('should update on submit', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(fixture.componentInstance.name)
.toEqual('Carson', 'Expected value not to update on input.');
expect(form.valid).toBe(false, 'Expected validation not to run on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.name)
.toEqual('Carson', 'Expected value not to update on blur.');
expect(form.valid).toBe(false, 'Expected validation not to run on blur.');
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.name)
.toEqual('Nancy Drew', 'Expected value to update on submit.');
expect(form.valid).toBe(true, 'Expected validation to run on submit.');
}));
it('should wait until second submit to update again', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
tick();
input.value = 'Carson';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(fixture.componentInstance.name)
.toEqual('Nancy Drew', 'Expected value not to update until second submit.');
expect(form.valid).toBe(true, 'Expected validation not to run until second submit.');
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.name)
.toEqual('Carson', 'Expected value to update on second submit.');
expect(form.valid).toBe(false, 'Expected validation to run on second submit.');
}));
it('should not run validation for onChange controls on submit', fakeAsync(() => {
const validatorSpy = jasmine.createSpy('validator');
const groupValidatorSpy = jasmine.createSpy('groupValidatorSpy');
const fixture = initTest(NgModelGroupForm);
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
form.control.get('name')!.setValidators(groupValidatorSpy);
form.control.get('name.last')!.setValidators(validatorSpy);
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(validatorSpy).not.toHaveBeenCalled();
expect(groupValidatorSpy).not.toHaveBeenCalled();
}));
it('should not update dirtiness until submit', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.dirty).toBe(false, 'Expected dirtiness not to update on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
tick();
expect(form.dirty).toBe(false, 'Expected dirtiness not to update on blur.');
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(form.dirty).toBe(true, 'Expected dirtiness to update on submit.');
}));
it('should not update touched until submit', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
dispatchEvent(input, 'blur');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.touched).toBe(false, 'Expected touched not to update on blur.');
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(form.touched).toBe(true, 'Expected touched to update on submit.');
}));
it('should reset properly', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = 'Nancy' as string | null;
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
dispatchEvent(input, 'blur');
fixture.detectChanges();
const form = fixture.debugElement.children[0].injector.get(NgForm);
form.resetForm();
fixture.detectChanges();
tick();
expect(input.value).toEqual('', 'Expected view value to reset.');
expect(form.value).toEqual({name: null}, 'Expected form value to reset.');
expect(fixture.componentInstance.name)
.toEqual(null, 'Expected ngModel value to reset.');
expect(form.dirty).toBe(false, 'Expected dirty to stay false on reset.');
expect(form.touched).toBe(false, 'Expected touched to stay false on reset.');
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(form.value)
.toEqual({name: null}, 'Expected form value to stay empty on submit');
expect(fixture.componentInstance.name)
.toEqual(null, 'Expected ngModel value to stay empty on submit.');
expect(form.dirty).toBe(false, 'Expected dirty to stay false on submit.');
expect(form.touched).toBe(false, 'Expected touched to stay false on submit.');
}));
it('should not emit valueChanges or statusChanges until submit', fakeAsync(() => {
const fixture = initTest(NgModelForm);
fixture.componentInstance.name = '';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const values: any[] = [];
const form = fixture.debugElement.children[0].injector.get(NgForm);
const sub =
merge(form.valueChanges!, form.statusChanges!).subscribe(val => values.push(val));
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(values).toEqual([], 'Expected no valueChanges or statusChanges on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
tick();
expect(values).toEqual([], 'Expected no valueChanges or statusChanges on blur.');
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(values).toEqual(
[{name: 'Nancy Drew'}, 'VALID'],
'Expected valueChanges and statusChanges on submit.');
sub.unsubscribe();
}));
it('should not fire ngModelChange event on submit unless value has changed',
fakeAsync(() => {
const fixture = initTest(NgModelChangesForm);
fixture.componentInstance.name = 'Carson';
fixture.componentInstance.options = {updateOn: 'submit'};
fixture.detectChanges();
tick();
const formEl = fixture.debugElement.query(By.css('form')).nativeElement;
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual([], 'Expected ngModelChanges not to fire if value unchanged.');
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Carson';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.events)
.toEqual([], 'Expected ngModelChanges not to fire on input.');
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired'], 'Expected ngModelChanges to fire once submitted if value changed.');
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired'],
'Expected ngModelChanges not to fire again on submit unless value changed.');
input.value = 'Bess';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
expect(fixture.componentInstance.events)
.toEqual(['fired'], 'Expected ngModelChanges not to fire on input after submit.');
dispatchEvent(formEl, 'submit');
fixture.detectChanges();
expect(fixture.componentInstance.events)
.toEqual(
['fired', 'fired'],
'Expected ngModelChanges to fire again on submit if value changed.');
}));
});
describe('ngFormOptions', () => {
it('should use ngFormOptions value when ngModelOptions are not set', fakeAsync(() => {
const fixture = initTest(NgModelOptionsStandalone);
fixture.componentInstance.options = {name: 'two'};
fixture.componentInstance.formOptions = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const controlOne = form.control.get('one')! as FormControl;
expect((controlOne as any)._updateOn).toBeUndefined();
expect(controlOne.updateOn)
.toEqual('blur', 'Expected first control to inherit updateOn from parent form.');
const controlTwo = form.control.get('two')! as FormControl;
expect((controlTwo as any)._updateOn).toBeUndefined();
expect(controlTwo.updateOn)
.toEqual('blur', 'Expected last control to inherit updateOn from parent form.');
}));
it('should actually update using ngFormOptions value', fakeAsync(() => {
const fixture = initTest(NgModelOptionsStandalone);
fixture.componentInstance.one = '';
fixture.componentInstance.formOptions = {updateOn: 'blur'};
fixture.detectChanges();
tick();
const input = fixture.debugElement.query(By.css('input')).nativeElement;
input.value = 'Nancy Drew';
dispatchEvent(input, 'input');
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value).toEqual({one: ''}, 'Expected value not to update on input.');
dispatchEvent(input, 'blur');
fixture.detectChanges();
expect(form.value).toEqual({one: 'Nancy Drew'}, 'Expected value to update on blur.');
}));
it('should allow ngModelOptions updateOn to override ngFormOptions', fakeAsync(() => {
const fixture = initTest(NgModelOptionsStandalone);
fixture.componentInstance.options = {updateOn: 'blur', name: 'two'};
fixture.componentInstance.formOptions = {updateOn: 'change'};
fixture.detectChanges();
tick();
const form = fixture.debugElement.children[0].injector.get(NgForm);
const controlOne = form.control.get('one')! as FormControl;
expect((controlOne as any)._updateOn).toBeUndefined();
expect(controlOne.updateOn)
.toEqual('change', 'Expected control updateOn to inherit form updateOn.');
const controlTwo = form.control.get('two')! as FormControl;
expect((controlTwo as any)._updateOn)
.toEqual('blur', 'Expected control to set blur override.');
expect(controlTwo.updateOn)
.toEqual('blur', 'Expected control updateOn to override form updateOn.');
}));
it('should update using ngModelOptions override', fakeAsync(() => {
const fixture = initTest(NgModelOptionsStandalone);
fixture.componentInstance.one = '';
fixture.componentInstance.two = '';
fixture.componentInstance.options = {updateOn: 'blur', name: 'two'};
fixture.componentInstance.formOptions = {updateOn: 'change'};
fixture.detectChanges();
tick();
const [inputOne, inputTwo] = fixture.debugElement.queryAll(By.css('input'));
inputOne.nativeElement.value = 'Nancy Drew';
dispatchEvent(inputOne.nativeElement, 'input');
fixture.detectChanges();
const form = fixture.debugElement.children[0].injector.get(NgForm);
expect(form.value)
.toEqual({one: 'Nancy Drew', two: ''}, 'Expected first value to update on input.');
inputTwo.nativeElement.value = 'Carson Drew';
dispatchEvent(inputTwo.nativeElement, 'input');
fixture.detectChanges();
tick();
expect(form.value)
.toEqual(
{one: 'Nancy Drew', two: ''}, 'Expected second value not to update on input.');
dispatchEvent(inputTwo.nativeElement, 'blur');
fixture.detectChanges();
expect(form.value)
.toEqual(
{one: 'Nancy Drew', two: 'Carson Drew'},
'Expected second value to update on blur.');
}));
it('should not use ngFormOptions for standalone ngModels', fakeAsync(() => {
const fixture = initTest(NgModelOptionsStandalone);
fixture.componentInstance.two = '';
fixture.componentInstance.options = {standalone: true};
fixture.componentInstance.formOptions = {updateOn: 'blur'};
fixture.detectChanges();
tick();