iSharkFly-Docs
/
angular-docs-cn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
angular-docs-cn/packages/core/test/render3/lifecycle_spec.ts

426 lines
12 KiB
TypeScript
Raw Blame History

/**
* @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 {C, ComponentTemplate, D, E, L, LifeCycleGuard, T, V, b, c, defineComponent, e, l, p, rC, rc, v} from '../../src/render3/index';
import {containerEl, renderToHtml} from './render_util';
describe('lifecycles', () => {
describe('onDestroy', () => {
let events: string[];
beforeEach(() => { events = []; });
let Comp = createOnDestroyComponent('comp', function(ctx: any, cm: boolean) {});
let Parent = createOnDestroyComponent('parent', function(ctx: any, cm: boolean) {
if (cm) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
Comp.ngComponentDef.r(0, 0);
});
function createOnDestroyComponent(name: string, template: ComponentTemplate<any>) {
return class Component {
val: string = '';
ngOnDestroy() { events.push(`${name}${this.val}`); }
static ngComponentDef = defineComponent({
type: Component,
tag: name,
factory: () => {
const comp = new Component();
l(LifeCycleGuard.ON_DESTROY, comp, comp.ngOnDestroy);
return comp;
},
inputs: {val: 'val'},
template: template
});
};
}
it('should call destroy when view is removed', () => {
/**
* % if (condition) {
* <comp></comp>
* % }
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
Comp.ngComponentDef.r(0, 0);
v();
}
}
rc();
}
renderToHtml(Template, {condition: true});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp']);
});
it('should call destroy when multiple views are removed', () => {
/**
* % if (condition) {
* <comp [val]="1"></comp>
* <comp [val]="2"></comp>
* % }
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
E(1, Comp.ngComponentDef);
{ D(1, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
p(0, 'val', b('1'));
p(1, 'val', b('2'));
Comp.ngComponentDef.r(0, 0);
Comp.ngComponentDef.r(1, 1);
v();
}
}
rc();
}
renderToHtml(Template, {condition: true});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp1', 'comp2']);
});
it('should be called in child components before parent components', () => {
/**
* % if (condition) {
* <parent></parent>
* % }
*
* parent template: <comp></comp>
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Parent.ngComponentDef);
{ D(0, Parent.ngComponentDef.n(), Parent.ngComponentDef); }
e();
}
Parent.ngComponentDef.r(0, 0);
v();
}
}
rc();
}
renderToHtml(Template, {condition: true});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp', 'parent']);
});
it('should be called bottom up with children nested 2 levels deep', () => {
/**
* % if (condition) {
* <grandparent></grandparent>
* % }
*
* grandparent template: <parent></parent>
* parent template: <comp></comp>
*/
let Grandparent = createOnDestroyComponent('grandparent', function(ctx: any, cm: boolean) {
if (cm) {
E(0, Parent.ngComponentDef);
{ D(0, Parent.ngComponentDef.n(), Parent.ngComponentDef); }
e();
}
Parent.ngComponentDef.r(0, 0);
});
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Grandparent.ngComponentDef);
{ D(0, Grandparent.ngComponentDef.n(), Grandparent.ngComponentDef); }
e();
}
Grandparent.ngComponentDef.r(0, 0);
v();
}
}
rc();
}
renderToHtml(Template, {condition: true});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp', 'parent', 'grandparent']);
});
it('should be called in consistent order if views are removed and re-added', () => {
/**
* % if (condition) {
* <comp [val]="1"></comp>
* % if (condition2) {
* <comp [val]="2"></comp>
* % }
* <comp [val]="3"></comp>
* % }
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
C(1);
c();
E(2, Comp.ngComponentDef);
{ D(1, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
p(0, 'val', b('1'));
Comp.ngComponentDef.r(0, 0);
rC(1);
{
if (ctx.condition2) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
p(0, 'val', b('2'));
Comp.ngComponentDef.r(0, 0);
v();
}
}
rc();
p(2, 'val', b('3'));
Comp.ngComponentDef.r(1, 2);
v();
}
}
rc();
}
renderToHtml(Template, {condition: true, condition2: true});
renderToHtml(Template, {condition: false});
/**
* Current angular will process in this same order (root is the top-level removed view):
*
* root.child (comp1 view) onDestroy: null
* root.child.next (container) -> embeddedView
* embeddedView.child (comp2 view) onDestroy: null
* embeddedView onDestroy: [comp2]
* root.child.next.next (comp3 view) onDestroy: null
* root onDestroy: [comp1, comp3]
*/
expect(events).toEqual(['comp2', 'comp1', 'comp3']);
events = [];
renderToHtml(Template, {condition: true, condition2: false});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp1', 'comp3']);
events = [];
renderToHtml(Template, {condition: true, condition2: true});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp2', 'comp1', 'comp3']);
});
it('should be called in every iteration of a destroyed for loop', () => {
/**
* % if (condition) {
* <comp [val]="1"></comp>
* % for (let i = 2; i < len; i++) {
* <comp [val]="i"></comp>
* % }
* <comp [val]="5"></comp>
* % }
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
C(1);
c();
E(2, Comp.ngComponentDef);
{ D(1, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
p(0, 'val', b('1'));
Comp.ngComponentDef.r(0, 0);
rC(1);
{
for (let j = 2; j < ctx.len; j++) {
if (V(0)) {
E(0, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
}
p(0, 'val', b(j));
Comp.ngComponentDef.r(0, 0);
v();
}
}
rc();
p(2, 'val', b('5'));
Comp.ngComponentDef.r(1, 2);
v();
}
}
rc();
}
/**
* Current angular will process in this same order (root is the top-level removed view):
*
* root.child (comp1 view) onDestroy: null
* root.child.next (container) -> embeddedView (children[0].data)
* embeddedView.child (comp2 view) onDestroy: null
* embeddedView onDestroy: [comp2]
* embeddedView.next.child (comp3 view) onDestroy: null
* embeddedView.next onDestroy: [comp3]
* embeddedView.next.next.child (comp4 view) onDestroy: null
* embeddedView.next.next onDestroy: [comp4]
* embeddedView.next.next -> container -> root
* root onDestroy: [comp1, comp5]
*/
renderToHtml(Template, {condition: true, len: 5});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp2', 'comp3', 'comp4', 'comp1', 'comp5']);
events = [];
renderToHtml(Template, {condition: true, len: 4});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp2', 'comp3', 'comp1', 'comp5']);
events = [];
renderToHtml(Template, {condition: true, len: 5});
renderToHtml(Template, {condition: false});
expect(events).toEqual(['comp2', 'comp3', 'comp4', 'comp1', 'comp5']);
});
it('should call destroy properly if view also has listeners', () => {
/**
* % if (condition) {
* <button (click)="onClick()">Click me</button>
* <comp></comp>
* <button (click)="onClick()">Click me</button>
* % }
*/
function Template(ctx: any, cm: boolean) {
if (cm) {
C(0);
c();
}
rC(0);
{
if (ctx.condition) {
if (V(0)) {
E(0, 'button');
{
L('click', ctx.onClick.bind(ctx));
T(1, 'Click me');
}
e();
E(2, Comp.ngComponentDef);
{ D(0, Comp.ngComponentDef.n(), Comp.ngComponentDef); }
e();
E(3, 'button');
{
L('click', ctx.onClick.bind(ctx));
T(4, 'Click me');
}
e();
}
Comp.ngComponentDef.r(0, 2);
v();
}
}
rc();
}
class App {
counter = 0;
condition = true;
onClick() { this.counter++; }
}
const ctx: {counter: number} = new App();
renderToHtml(Template, ctx);
const buttons = containerEl.querySelectorAll('button') !;
buttons[0].click();
expect(ctx.counter).toEqual(1);
buttons[1].click();
expect(ctx.counter).toEqual(2);
renderToHtml(Template, {condition: false});
buttons[0].click();
buttons[1].click();
expect(events).toEqual(['comp']);
expect(ctx.counter).toEqual(2);
});
});
});
Reference in New Issue View Git Blame Copy Permalink