angular-cn/packages/core/test/render3/di_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 {ChangeDetectorRef, ElementRef, TemplateRef, ViewContainerRef} from '@angular/core';
import {defineComponent} from '../../src/render3/definition';
import {InjectFlags, bloomAdd, bloomFindPossibleInjector, getOrCreateNodeInjector, injectAttribute} from '../../src/render3/di';
import {NgOnChangesFeature, PublicFeature, defineDirective, directiveInject, injectChangeDetectorRef, injectElementRef, injectTemplateRef, injectViewContainerRef} from '../../src/render3/index';
import {bind, container, containerRefreshEnd, containerRefreshStart, createLNode, createLView, createTView, elementEnd, elementStart, embeddedViewEnd, embeddedViewStart, enterView, interpolation2, leaveView, load, projection, projectionDef, text, textBinding} from '../../src/render3/instructions';
import {LInjector} from '../../src/render3/interfaces/injector';
import {LNodeFlags} from '../../src/render3/interfaces/node';
import {LViewFlags} from '../../src/render3/interfaces/view';
import {ViewRef} from '../../src/render3/view_ref';
import {renderComponent, renderToHtml, toHtml} from './render_util';
describe('di', () => {
describe('no dependencies', () => {
it('should create directive with no deps', () => {
class Directive {
value: string = 'Created';
static ngDirectiveDef = defineDirective({type: Directive, factory: () => new Directive});
}
function Template(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', null, [Directive]);
{ text(2); }
elementEnd();
}
textBinding(2, bind(load<Directive>(1).value));
}
expect(renderToHtml(Template, {})).toEqual('<div>Created</div>');
});
});
describe('view dependencies', () => {
it('should create directive with inter view dependencies', () => {
class DirectiveA {
value: string = 'A';
static ngDirectiveDef = defineDirective(
{type: DirectiveA, factory: () => new DirectiveA, features: [PublicFeature]});
}
class DirectiveB {
value: string = 'B';
static ngDirectiveDef = defineDirective(
{type: DirectiveB, factory: () => new DirectiveB, features: [PublicFeature]});
}
class DirectiveC {
value: string;
constructor(a: DirectiveA, b: DirectiveB) { this.value = a.value + b.value; }
static ngDirectiveDef = defineDirective({
type: DirectiveC,
factory: () => new DirectiveC(directiveInject(DirectiveA), directiveInject(DirectiveB))
});
}
function Template(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', null, [DirectiveA]);
{
elementStart(2, 'span', null, [DirectiveB, DirectiveC]);
{ text(5); }
elementEnd();
}
elementEnd();
}
textBinding(5, bind(load<DirectiveC>(4).value));
}
expect(renderToHtml(Template, {})).toEqual('<div><span>AB</span></div>');
});
});
describe('ElementRef', () => {
it('should create directive with ElementRef dependencies', () => {
class Directive {
value: string;
constructor(public elementRef: ElementRef) {
this.value = (elementRef.constructor as any).name;
}
static ngDirectiveDef = defineDirective({
type: Directive,
factory: () => new Directive(injectElementRef()),
features: [PublicFeature]
});
}
class DirectiveSameInstance {
value: boolean;
constructor(elementRef: ElementRef, directive: Directive) {
this.value = elementRef === directive.elementRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
factory: () => new DirectiveSameInstance(injectElementRef(), directiveInject(Directive))
});
}
function Template(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', null, [Directive, DirectiveSameInstance]);
{ text(3); }
elementEnd();
}
textBinding(
3, interpolation2(
'', load<Directive>(1).value, '-', load<DirectiveSameInstance>(2).value, ''));
}
expect(renderToHtml(Template, {})).toEqual('<div>ElementRef-true</div>');
});
});
describe('TemplateRef', () => {
it('should create directive with TemplateRef dependencies', () => {
class Directive {
value: string;
constructor(public templateRef: TemplateRef<any>) {
this.value = (templateRef.constructor as any).name;
}
static ngDirectiveDef = defineDirective({
type: Directive,
factory: () => new Directive(injectTemplateRef()),
features: [PublicFeature]
});
}
class DirectiveSameInstance {
value: boolean;
constructor(templateRef: TemplateRef<any>, directive: Directive) {
this.value = templateRef === directive.templateRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
factory: () => new DirectiveSameInstance(injectTemplateRef(), directiveInject(Directive))
});
}
function Template(ctx: any, cm: any) {
if (cm) {
container(0, [Directive, DirectiveSameInstance], function() {});
text(3);
}
textBinding(
3, interpolation2(
'', load<Directive>(1).value, '-', load<DirectiveSameInstance>(2).value, ''));
}
expect(renderToHtml(Template, {})).toEqual('TemplateRef-true');
});
});
describe('ViewContainerRef', () => {
it('should create directive with ViewContainerRef dependencies', () => {
class Directive {
value: string;
constructor(public viewContainerRef: ViewContainerRef) {
this.value = (viewContainerRef.constructor as any).name;
}
static ngDirectiveDef = defineDirective({
type: Directive,
factory: () => new Directive(injectViewContainerRef()),
features: [PublicFeature]
});
}
class DirectiveSameInstance {
value: boolean;
constructor(viewContainerRef: ViewContainerRef, directive: Directive) {
this.value = viewContainerRef === directive.viewContainerRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
factory:
() => new DirectiveSameInstance(injectViewContainerRef(), directiveInject(Directive))
});
}
function Template(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', null, [Directive, DirectiveSameInstance]);
{ text(3); }
elementEnd();
}
textBinding(
3, interpolation2(
'', load<Directive>(1).value, '-', load<DirectiveSameInstance>(2).value, ''));
}
expect(renderToHtml(Template, {})).toEqual('<div>ViewContainerRef-true</div>');
});
});
describe('ChangeDetectorRef', () => {
let dir: Directive;
let dirSameInstance: DirectiveSameInstance;
let comp: MyComp;
class MyComp {
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyComp,
tag: 'my-comp',
factory: () => comp = new MyComp(injectChangeDetectorRef()),
template: function(ctx: MyComp, cm: boolean) {
if (cm) {
projectionDef(0);
projection(1, 0);
}
}
});
}
class Directive {
value: string;
constructor(public cdr: ChangeDetectorRef) { this.value = (cdr.constructor as any).name; }
static ngDirectiveDef = defineDirective({
type: Directive,
factory: () => dir = new Directive(injectChangeDetectorRef()),
features: [PublicFeature],
exportAs: 'dir'
});
}
class DirectiveSameInstance {
constructor(public cdr: ChangeDetectorRef) {}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
factory: () => dirSameInstance = new DirectiveSameInstance(injectChangeDetectorRef())
});
}
const $e0_attrs$ = ['dir', '', 'dirSameInstance', ''];
it('should inject current component ChangeDetectorRef into directives on components', () => {
class MyApp {
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(),
/** <my-comp dir dirSameInstance #dir="dir"></my-comp> {{ dir.value }} */
template: function(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, MyComp, $e0_attrs$, [Directive, DirectiveSameInstance]);
elementEnd();
text(4);
}
textBinding(4, bind(load<Directive>(2).value));
}
});
}
const app = renderComponent(MyApp);
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
expect(toHtml(app)).toEqual('<my-comp dir="" dirsameinstance=""></my-comp>ViewRef');
expect((comp !.cdr as ViewRef<MyComp>).context).toBe(comp);
expect(dir !.cdr).toBe(comp !.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
it('should inject host component ChangeDetectorRef into directives on elements', () => {
class MyApp {
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(injectChangeDetectorRef()),
/** <div dir dirSameInstance #dir="dir"> {{ dir.value }} </div> */
template: function(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', $e0_attrs$, [Directive, DirectiveSameInstance]);
{ text(3); }
elementEnd();
}
textBinding(3, bind(load<Directive>(1).value));
}
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsameinstance="">ViewRef</div>');
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
expect(dir !.cdr).toBe(app.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
it('should inject host component ChangeDetectorRef into directives in ContentChildren', () => {
class MyApp {
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(injectChangeDetectorRef()),
/**
* <my-comp>
* <div dir dirSameInstance #dir="dir"></div>
* </my-comp>
* {{ dir.value }}
*/
template: function(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, MyComp);
{
elementStart(2, 'div', $e0_attrs$, [Directive, DirectiveSameInstance]);
elementEnd();
}
elementEnd();
text(5);
}
textBinding(5, bind(load<Directive>(3).value));
}
});
}
const app = renderComponent(MyApp);
expect(toHtml(app))
.toEqual('<my-comp><div dir="" dirsameinstance=""></div></my-comp>ViewRef');
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
expect(dir !.cdr).toBe(app !.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
it('should inject host component ChangeDetectorRef into directives in embedded views', () => {
class MyApp {
showing = true;
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(injectChangeDetectorRef()),
/**
* % if (showing) {
* <div dir dirSameInstance #dir="dir"> {{ dir.value }} </div>
* % }
*/
template: function(ctx: MyApp, cm: boolean) {
if (cm) {
container(0);
}
containerRefreshStart(0);
{
if (ctx.showing) {
if (embeddedViewStart(0)) {
elementStart(0, 'div', $e0_attrs$, [Directive, DirectiveSameInstance]);
{ text(3); }
elementEnd();
}
textBinding(3, bind(load<Directive>(1).value));
}
embeddedViewEnd();
}
containerRefreshEnd();
}
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsameinstance="">ViewRef</div>');
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
expect(dir !.cdr).toBe(app.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
it('should inject host component ChangeDetectorRef into directives on containers', () => {
class IfDirective {
/* @Input */
myIf = true;
constructor(public template: TemplateRef<any>, public vcr: ViewContainerRef) {}
ngOnChanges() {
if (this.myIf) {
this.vcr.createEmbeddedView(this.template);
}
}
static ngDirectiveDef = defineDirective({
type: IfDirective,
factory: () => new IfDirective(injectTemplateRef(), injectViewContainerRef()),
inputs: {myIf: 'myIf'},
features: [PublicFeature, NgOnChangesFeature()]
});
}
class MyApp {
showing = true;
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(injectChangeDetectorRef()),
/** <div *myIf="showing" dir dirSameInstance #dir="dir"> {{ dir.value }} </div> */
template: function(ctx: MyApp, cm: boolean) {
if (cm) {
container(0, [IfDirective], C1);
}
containerRefreshStart(0);
containerRefreshEnd();
function C1(ctx1: any, cm1: boolean) {
if (cm1) {
elementStart(0, 'div', $e0_attrs$, [Directive, DirectiveSameInstance]);
{ text(3); }
elementEnd();
}
textBinding(3, bind(load<Directive>(1).value));
}
}
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsameinstance="">ViewRef</div>');
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
expect(dir !.cdr).toBe(app.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
it('should injectAttribute', () => {
let exist: string|undefined = 'wrong';
let nonExist: string|undefined = 'wrong';
class MyApp {
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(),
template: function(ctx: MyApp, cm: boolean) {
if (cm) {
elementStart(0, 'div', ['exist', 'existValue', 'other', 'ignore']);
exist = injectAttribute('exist');
nonExist = injectAttribute('nonExist');
}
}
});
}
const app = renderComponent(MyApp);
expect(exist).toEqual('existValue');
expect(nonExist).toEqual(undefined);
});
});
describe('inject', () => {
describe('bloom filter', () => {
let di: LInjector;
beforeEach(() => {
di = {} as any;
di.bf0 = 0;
di.bf1 = 0;
di.bf2 = 0;
di.bf3 = 0;
di.bf4 = 0;
di.bf5 = 0;
di.bf6 = 0;
di.bf7 = 0;
di.bf3 = 0;
di.cbf0 = 0;
di.cbf1 = 0;
di.cbf2 = 0;
di.cbf3 = 0;
di.cbf4 = 0;
di.cbf5 = 0;
di.cbf6 = 0;
di.cbf7 = 0;
});
function bloomState() {
return [di.bf7, di.bf6, di.bf5, di.bf4, di.bf3, di.bf2, di.bf1, di.bf0];
}
it('should add values', () => {
bloomAdd(di, { __NG_ELEMENT_ID__: 0 } as any);
expect(bloomState()).toEqual([0, 0, 0, 0, 0, 0, 0, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 32 + 1 } as any);
expect(bloomState()).toEqual([0, 0, 0, 0, 0, 0, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 64 + 2 } as any);
expect(bloomState()).toEqual([0, 0, 0, 0, 0, 4, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 96 + 3 } as any);
expect(bloomState()).toEqual([0, 0, 0, 0, 8, 4, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 128 + 4 } as any);
expect(bloomState()).toEqual([0, 0, 0, 16, 8, 4, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 160 + 5 } as any);
expect(bloomState()).toEqual([0, 0, 32, 16, 8, 4, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 192 + 6 } as any);
expect(bloomState()).toEqual([0, 64, 32, 16, 8, 4, 2, 1]);
bloomAdd(di, { __NG_ELEMENT_ID__: 224 + 7 } as any);
expect(bloomState()).toEqual([128, 64, 32, 16, 8, 4, 2, 1]);
});
it('should query values', () => {
bloomAdd(di, { __NG_ELEMENT_ID__: 0 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 32 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 64 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 96 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 127 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 161 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 188 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 223 } as any);
bloomAdd(di, { __NG_ELEMENT_ID__: 255 } as any);
expect(bloomFindPossibleInjector(di, 0)).toEqual(di);
expect(bloomFindPossibleInjector(di, 1)).toEqual(null);
expect(bloomFindPossibleInjector(di, 32)).toEqual(di);
expect(bloomFindPossibleInjector(di, 64)).toEqual(di);
expect(bloomFindPossibleInjector(di, 96)).toEqual(di);
expect(bloomFindPossibleInjector(di, 127)).toEqual(di);
expect(bloomFindPossibleInjector(di, 161)).toEqual(di);
expect(bloomFindPossibleInjector(di, 188)).toEqual(di);
expect(bloomFindPossibleInjector(di, 223)).toEqual(di);
expect(bloomFindPossibleInjector(di, 255)).toEqual(di);
});
});
describe('flags', () => {
it('should return defaultValue not found', () => {
class MyApp {
constructor(public value: string) {}
static ngComponentDef = defineComponent({
type: MyApp,
tag: 'my-app',
factory: () => new MyApp(
directiveInject(String as any, InjectFlags.Default, 'DefaultValue')),
template: () => null
});
}
const myApp = renderComponent(MyApp);
expect(myApp.value).toEqual('DefaultValue');
});
});
it('should inject from parent view', () => {
class ParentDirective {
static ngDirectiveDef = defineDirective({
type: ParentDirective,
factory: () => new ParentDirective(),
features: [PublicFeature]
});
}
class ChildDirective {
value: string;
constructor(public parent: ParentDirective) {
this.value = (parent.constructor as any).name;
}
static ngDirectiveDef = defineDirective({
type: ChildDirective,
factory: () => new ChildDirective(directiveInject(ParentDirective)),
features: [PublicFeature]
});
}
class Child2Directive {
value: boolean;
constructor(parent: ParentDirective, child: ChildDirective) {
this.value = parent === child.parent;
}
static ngDirectiveDef = defineDirective({
type: Child2Directive,
factory: () => new Child2Directive(
directiveInject(ParentDirective), directiveInject(ChildDirective))
});
}
function Template(ctx: any, cm: boolean) {
if (cm) {
elementStart(0, 'div', null, [ParentDirective]);
{ container(2); }
elementEnd();
}
containerRefreshStart(2);
{
if (embeddedViewStart(0)) {
elementStart(0, 'span', null, [ChildDirective, Child2Directive]);
{ text(3); }
elementEnd();
}
textBinding(
3, interpolation2(
'', load<ChildDirective>(1).value, '-', load<Child2Directive>(2).value, ''));
embeddedViewEnd();
}
containerRefreshEnd();
}
expect(renderToHtml(Template, {})).toEqual('<div><span>ParentDirective-true</span></div>');
});
it('should inject from module Injector', () => {
});
});
describe('getOrCreateNodeInjector', () => {
it('should handle initial undefined state', () => {
const contentView =
createLView(-1, null !, createTView(), null, null, LViewFlags.CheckAlways);
const oldView = enterView(contentView, null !);
try {
const parent = createLNode(0, LNodeFlags.Element, null, null);
// Simulate the situation where the previous parent is not initialized.
// This happens on first bootstrap because we don't init existing values
// so that we have smaller HelloWorld.
(parent as{parent: any}).parent = undefined;
const injector = getOrCreateNodeInjector();
expect(injector).not.toBe(null);
} finally {
leaveView(oldView);
}
});
});
});