angular-docs-cn/packages/core/test/render3/di_spec.ts

1426 lines
46 KiB
TypeScript

/**
* @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, Host, InjectFlags, Optional, Self, SkipSelf, TemplateRef, ViewContainerRef, defineInjectable} from '@angular/core';
import {RenderFlags} from '@angular/core/src/render3/interfaces/definition';
import {defineComponent} from '../../src/render3/definition';
import {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, createLViewData, 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 {AttributeMarker, TNodeType} from '../../src/render3/interfaces/node';
import {LViewFlags} from '../../src/render3/interfaces/view';
import {ViewRef} from '../../src/render3/view_ref';
import {ComponentFixture, createComponent, createDirective, 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,
selectors: [['', 'dir', '']],
factory: () => new Directive,
exportAs: 'dir'
});
}
/** <div dir #dir="dir"> {{ dir.value }} </div> */
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', ''], ['dir', 'dir']);
{ text(2); }
elementEnd();
}
let tmp: any;
if (rf & RenderFlags.Update) {
tmp = load(1);
textBinding(2, bind(tmp.value));
}
}
expect(renderToHtml(Template, {}, [Directive])).toEqual('<div dir="">Created</div>');
});
});
describe('directive injection', () => {
let log: string[] = [];
class DirB {
value = 'DirB';
constructor() { log.push(this.value); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirB', '']],
type: DirB,
factory: () => new DirB(),
features: [PublicFeature]
});
}
beforeEach(() => log = []);
it('should create directive with intra view dependencies', () => {
class DirA {
value: string = 'DirA';
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => new DirA(),
features: [PublicFeature]
});
}
class DirC {
value: string;
constructor(a: DirA, b: DirB) { this.value = a.value + b.value; }
static ngDirectiveDef = defineDirective({
type: DirC,
selectors: [['', 'dirC', '']],
factory: () => new DirC(directiveInject(DirA), directiveInject(DirB)),
exportAs: 'dirC'
});
}
/**
* <div dirA>
* <span dirB dirC #dir="dirC"> {{ dir.value }} </span>
* </div>
*/
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '']);
{
elementStart(1, 'span', ['dirB', '', 'dirC', ''], ['dir', 'dirC']);
{ text(3); }
elementEnd();
}
elementEnd();
}
let tmp: any;
if (rf & RenderFlags.Update) {
tmp = load(2);
textBinding(3, bind(tmp.value));
}
}
const defs = [DirA, DirB, DirC];
expect(renderToHtml(Template, {}, defs))
.toEqual('<div dira=""><span dirb="" dirc="">DirADirB</span></div>');
});
it('should instantiate injected directives first', () => {
class DirA {
constructor(dir: DirB) { log.push(`DirA (dep: ${dir.value})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirB)),
});
}
/** <div dirA dirB></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', '']);
elementEnd();
}
}, [DirA, DirB]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(['DirB', 'DirA (dep: DirB)']);
});
it('should instantiate injected directives before components', () => {
class Comp {
constructor(dir: DirB) { log.push(`Comp (dep: ${dir.value})`); }
static ngComponentDef = defineComponent({
selectors: [['comp']],
type: Comp,
factory: () => new Comp(directiveInject(DirB)),
template: (ctx: any, fm: boolean) => {}
});
}
/** <comp dirB></comp> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'comp', ['dirB', '']);
elementEnd();
}
}, [Comp, DirB]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(['DirB', 'Comp (dep: DirB)']);
});
it('should inject directives in the correct order in a for loop', () => {
class DirA {
constructor(dir: DirB) { log.push(`DirA (dep: ${dir.value})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirB))
});
}
/**
* % for(let i = 0; i < 3; i++) {
* <div dirA dirB></div>
* % }
*/
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
container(0);
}
containerRefreshStart(0);
{
for (let i = 0; i < 3; i++) {
if (embeddedViewStart(0)) {
elementStart(0, 'div', ['dirA', '', 'dirB', '']);
elementEnd();
}
embeddedViewEnd();
}
}
containerRefreshEnd();
}, [DirA, DirB]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(
['DirB', 'DirA (dep: DirB)', 'DirB', 'DirA (dep: DirB)', 'DirB', 'DirA (dep: DirB)']);
});
it('should instantiate directives with multiple out-of-order dependencies', () => {
class DirA {
value = 'DirA';
constructor() { log.push(this.value); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(),
features: [PublicFeature]
});
}
class DirB {
constructor(dirA: DirA, dirC: DirC) {
log.push(`DirB (deps: ${dirA.value} and ${dirC.value})`);
}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirB', '']],
type: DirB,
factory: () => new DirB(directiveInject(DirA), directiveInject(DirC))
});
}
class DirC {
value = 'DirC';
constructor() { log.push(this.value); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirC', '']],
type: DirC,
factory: () => new DirC(),
features: [PublicFeature]
});
}
/** <div dirA dirB dirC></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', '', 'dirC', '']);
elementEnd();
}
}, [DirA, DirB, DirC]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(['DirA', 'DirC', 'DirB (deps: DirA and DirC)']);
});
it('should instantiate in the correct order for complex case', () => {
class Comp {
constructor(dir: DirD) { log.push(`Comp (dep: ${dir.value})`); }
static ngComponentDef = defineComponent({
selectors: [['comp']],
type: Comp,
factory: () => new Comp(directiveInject(DirD)),
template: (ctx: any, fm: boolean) => {}
});
}
class DirA {
value = 'DirA';
constructor(dir: DirC) { log.push(`DirA (dep: ${dir.value})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirC)),
features: [PublicFeature]
});
}
class DirC {
value = 'DirC';
constructor(dir: DirB) { log.push(`DirC (dep: ${dir.value})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirC', '']],
type: DirC,
factory: () => new DirC(directiveInject(DirB)),
features: [PublicFeature]
});
}
class DirD {
value = 'DirD';
constructor(dir: DirA) { log.push(`DirD (dep: ${dir.value})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirD', '']],
type: DirD,
factory: () => new DirD(directiveInject(DirA)),
features: [PublicFeature]
});
}
/** <comp dirA dirB dirC dirD></comp> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'comp', ['dirA', '', 'dirB', '', 'dirC', '', 'dirD', '']);
elementEnd();
}
}, [Comp, DirA, DirB, DirC, DirD]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(
['DirB', 'DirC (dep: DirB)', 'DirA (dep: DirC)', 'DirD (dep: DirA)', 'Comp (dep: DirD)']);
});
it('should instantiate in correct order with mixed parent and peer dependencies', () => {
class DirA {
constructor(dirB: DirB, app: App) {
log.push(`DirA (deps: ${dirB.value} and ${app.value})`);
}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirB), directiveInject(App)),
});
}
class App {
value = 'App';
static ngComponentDef = defineComponent({
selectors: [['app']],
type: App,
factory: () => new App(),
/** <div dirA dirB dirC></div> */
template: (rf: RenderFlags, ctx: any) => {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', '', 'dirC', 'dirC']);
elementEnd();
}
},
directives: [DirA, DirB],
features: [PublicFeature],
});
}
const fixture = new ComponentFixture(App);
expect(log).toEqual(['DirB', 'DirA (deps: DirB and App)']);
});
it('should not use a parent when peer dep is available', () => {
let count = 1;
class DirA {
constructor(dirB: DirB) { log.push(`DirA (dep: DirB - ${dirB.count})`); }
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirB)),
});
}
class DirB {
count: number;
constructor() {
log.push(`DirB`);
this.count = count++;
}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirB', '']],
type: DirB,
factory: () => new DirB(),
features: [PublicFeature],
});
}
/** <div dirA dirB></div> */
const Parent = createComponent('parent', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', '']);
elementEnd();
}
}, [DirA, DirB]);
/** <parent dirB></parent> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'parent', ['dirB', '']);
elementEnd();
}
}, [Parent, DirB]);
const fixture = new ComponentFixture(App);
expect(log).toEqual(['DirB', 'DirB', 'DirA (dep: DirB - 2)']);
});
it('should create instance even when no injector present', () => {
class MyService {
value = 'MyService';
static ngInjectableDef =
defineInjectable({providedIn: 'root', factory: () => new MyService()});
}
class MyComponent {
constructor(public myService: MyService) {}
static ngComponentDef = defineComponent({
type: MyComponent,
selectors: [['my-component']],
factory: () => new MyComponent(directiveInject(MyService)),
template: function(rf: RenderFlags, ctx: MyComponent) {
if (rf & RenderFlags.Create) {
text(0);
}
if (rf & RenderFlags.Update) {
textBinding(0, bind(ctx.myService.value));
}
}
});
}
const fixture = new ComponentFixture(MyComponent);
fixture.update();
expect(fixture.html).toEqual('MyService');
});
it('should throw if directive is not found anywhere', () => {
class Dir {
constructor(siblingDir: OtherDir) {}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dir', '']],
type: Dir,
factory: () => new Dir(directiveInject(OtherDir)),
features: [PublicFeature]
});
}
class OtherDir {
static ngDirectiveDef = defineDirective({
selectors: [['', 'other', '']],
type: OtherDir,
factory: () => new OtherDir(),
features: [PublicFeature]
});
}
/** <div dir></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '']);
elementEnd();
}
}, [Dir, OtherDir]);
expect(() => new ComponentFixture(App)).toThrowError(/Injector: NOT_FOUND \[OtherDir\]/);
});
it('should throw if directive is not found in ancestor tree', () => {
class Dir {
constructor(siblingDir: OtherDir) {}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dir', '']],
type: Dir,
factory: () => new Dir(directiveInject(OtherDir)),
features: [PublicFeature]
});
}
class OtherDir {
static ngDirectiveDef = defineDirective({
selectors: [['', 'other', '']],
type: OtherDir,
factory: () => new OtherDir(),
features: [PublicFeature]
});
}
/**
* <div other></div>
* <div dir></div>
*/
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['other', '']);
elementEnd();
elementStart(1, 'div', ['dir', '']);
elementEnd();
}
}, [Dir, OtherDir]);
expect(() => new ComponentFixture(App)).toThrowError(/Injector: NOT_FOUND \[OtherDir\]/);
});
it('should throw if directives try to inject each other', () => {
class DirA {
constructor(dir: DirB) {}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirA', '']],
type: DirA,
factory: () => new DirA(directiveInject(DirB)),
features: [PublicFeature]
});
}
class DirB {
constructor(dir: DirA) {}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dirB', '']],
type: DirB,
factory: () => new DirB(directiveInject(DirA)),
features: [PublicFeature]
});
}
/** <div dirA dirB></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', '']);
elementEnd();
}
}, [DirA, DirB]);
expect(() => new ComponentFixture(App)).toThrowError(/Cannot instantiate cyclic dependency!/);
});
it('should throw if directive tries to inject itself', () => {
class Dir {
constructor(dir: Dir) {}
static ngDirectiveDef = defineDirective({
selectors: [['', 'dir', '']],
type: Dir,
factory: () => new Dir(directiveInject(Dir)),
features: [PublicFeature]
});
}
/** <div dir></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '']);
elementEnd();
}
}, [Dir]);
expect(() => new ComponentFixture(App)).toThrowError(/Cannot instantiate cyclic dependency!/);
});
describe('flags', () => {
class DirB {
value: string;
static ngDirectiveDef = defineDirective({
type: DirB,
selectors: [['', 'dirB', '']],
factory: () => new DirB(),
inputs: {value: 'dirB'},
features: [PublicFeature]
});
}
it('should not throw if dependency is @Optional', () => {
let dirA: DirA;
class DirA {
constructor(@Optional() public dirB: DirB|null) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.Optional))
});
}
/** <div dirA></div> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '']);
elementEnd();
}
}, [DirA, DirB]);
expect(() => {
const fixture = new ComponentFixture(App);
expect(dirA !.dirB).toEqual(null);
}).not.toThrow();
});
it('should not throw if dependency is @Optional but defined elsewhere', () => {
let dirA: DirA;
class DirA {
constructor(@Optional() public dirB: DirB|null) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.Optional))
});
}
/**
* <div dirB></div>
* <div dirA></div>
*/
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirB', '']);
elementEnd();
elementStart(1, 'div', ['dirA', '']);
elementEnd();
}
}, [DirA, DirB]);
expect(() => {
const fixture = new ComponentFixture(App);
expect(dirA !.dirB).toEqual(null);
}).not.toThrow();
});
it('should skip the current node with @SkipSelf', () => {
let dirA: DirA;
class DirA {
constructor(@SkipSelf() public dirB: DirB) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.SkipSelf))
});
}
/** <div dirA dirB="self"></div> */
const Comp = createComponent('comp', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '', 'dirB', 'self']);
elementEnd();
}
}, [DirA, DirB]);
/* <comp dirB="parent"></comp> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'comp', ['dirB', 'parent']);
elementEnd();
}
}, [Comp, DirB]);
const fixture = new ComponentFixture(App);
expect(dirA !.dirB.value).toEqual('parent');
});
it('should check only the current node with @Self', () => {
let dirA: DirA;
class DirA {
constructor(@Self() public dirB: DirB) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.Self))
});
}
/**
* <div dirB>
* <div dirA></div>
* </div>
*/
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirB', '']);
elementStart(1, 'div', ['dirA', '']);
elementEnd();
elementEnd();
}
}, [DirA, DirB]);
expect(() => {
const fixture = new ComponentFixture(App);
}).toThrowError(/Injector: NOT_FOUND \[DirB\]/);
});
it('should check only the current node with @Self even with false positive', () => {
let dirA: DirA;
class DirA {
constructor(@Self() public dirB: DirB) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.Self))
});
}
const DirC = createDirective('dirC');
/**
* <div dirB>
* <div dirA dirC></div>
* </div>
*/
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirB', '']);
elementStart(1, 'div', ['dirA', '', 'dirC', '']);
elementEnd();
elementEnd();
}
}, [DirA, DirB, DirC]);
expect(() => {
(DirA as any)['__NG_ELEMENT_ID__'] = 1;
(DirC as any)['__NG_ELEMENT_ID__'] = 257;
const fixture = new ComponentFixture(App);
}).toThrowError(/Injector: NOT_FOUND \[DirB\]/);
});
it('should not pass component boundary with @Host', () => {
let dirA: DirA;
class DirA {
constructor(@Host() public dirB: DirB) {}
static ngDirectiveDef = defineDirective({
type: DirA,
selectors: [['', 'dirA', '']],
factory: () => dirA = new DirA(directiveInject(DirB, InjectFlags.Host))
});
}
/** <div dirA></div> */
const Comp = createComponent('comp', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dirA', '']);
elementEnd();
}
}, [DirA, DirB]);
/* <comp dirB></comp> */
const App = createComponent('app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'comp', ['dirB', '']);
elementEnd();
}
}, [Comp, DirB]);
expect(() => {
const fixture = new ComponentFixture(App);
}).toThrowError(/Injector: NOT_FOUND \[DirB\]/);
});
});
});
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,
selectors: [['', 'dir', '']],
factory: () => new Directive(injectElementRef()),
features: [PublicFeature],
exportAs: 'dir'
});
}
class DirectiveSameInstance {
value: boolean;
constructor(elementRef: ElementRef, directive: Directive) {
this.value = elementRef === directive.elementRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
selectors: [['', 'dirSame', '']],
factory: () => new DirectiveSameInstance(injectElementRef(), directiveInject(Directive)),
exportAs: 'dirSame'
});
}
/**
* <div dir dirSame #dirSame="dirSame" #dir="dir">
* {{ dir.value }} - {{ dirSame.value }}
* </div>
*/
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '', 'dirSame', ''], ['dirSame', 'dirSame', 'dir', 'dir']);
{ text(3); }
elementEnd();
}
let tmp1: any;
let tmp2: any;
if (rf & RenderFlags.Update) {
tmp1 = load(1);
tmp2 = load(2);
textBinding(3, interpolation2('', tmp2.value, '-', tmp1.value, ''));
}
}
const defs = [Directive, DirectiveSameInstance];
expect(renderToHtml(Template, {}, defs))
.toEqual('<div dir="" dirsame="">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,
selectors: [['', 'dir', '']],
factory: () => new Directive(injectTemplateRef()),
features: [PublicFeature],
exportAs: 'dir'
});
}
class DirectiveSameInstance {
value: boolean;
constructor(templateRef: TemplateRef<any>, directive: Directive) {
this.value = templateRef === directive.templateRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
selectors: [['', 'dirSame', '']],
factory: () => new DirectiveSameInstance(injectTemplateRef(), directiveInject(Directive)),
exportAs: 'dirSame'
});
}
/**
* <ng-template dir dirSame #dir="dir" #dirSame="dirSame">
* {{ dir.value }} - {{ dirSame.value }}
* </ng-template>
*/
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
container(0, function() {
}, undefined, ['dir', '', 'dirSame', ''], ['dir', 'dir', 'dirSame', 'dirSame']);
text(3);
}
let tmp1: any;
let tmp2: any;
if (rf & RenderFlags.Update) {
tmp1 = load(1);
tmp2 = load(2);
textBinding(3, interpolation2('', tmp1.value, '-', tmp2.value, ''));
}
}
const defs = [Directive, DirectiveSameInstance];
expect(renderToHtml(Template, {}, defs)).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,
selectors: [['', 'dir', '']],
factory: () => new Directive(injectViewContainerRef()),
features: [PublicFeature],
exportAs: 'dir'
});
}
class DirectiveSameInstance {
value: boolean;
constructor(viewContainerRef: ViewContainerRef, directive: Directive) {
this.value = viewContainerRef === directive.viewContainerRef;
}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
selectors: [['', 'dirSame', '']],
factory:
() => new DirectiveSameInstance(injectViewContainerRef(), directiveInject(Directive)),
exportAs: 'dirSame'
});
}
/**
* <div dir dirSame #dir="dir" #dirSame="dirSame">
* {{ dir.value }} - {{ dirSame.value }}
* </div>
*/
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '', 'dirSame', ''], ['dir', 'dir', 'dirSame', 'dirSame']);
{ text(3); }
elementEnd();
}
let tmp1: any;
let tmp2: any;
if (rf & RenderFlags.Update) {
tmp1 = load(1);
tmp2 = load(2);
textBinding(3, interpolation2('', tmp1.value, '-', tmp2.value, ''));
}
}
const defs = [Directive, DirectiveSameInstance];
expect(renderToHtml(Template, {}, defs))
.toEqual('<div dir="" dirsame="">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,
selectors: [['my-comp']],
factory: () => comp = new MyComp(injectChangeDetectorRef()),
template: function(rf: RenderFlags, ctx: MyComp) {
if (rf & RenderFlags.Create) {
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,
selectors: [['', 'dir', '']],
factory: () => dir = new Directive(injectChangeDetectorRef()),
features: [PublicFeature],
exportAs: 'dir'
});
}
class DirectiveSameInstance {
constructor(public cdr: ChangeDetectorRef) {}
static ngDirectiveDef = defineDirective({
type: DirectiveSameInstance,
selectors: [['', 'dirSame', '']],
factory: () => dirSameInstance = new DirectiveSameInstance(injectChangeDetectorRef())
});
}
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,
selectors: [['', 'myIf', '']],
factory: () => new IfDirective(injectTemplateRef(), injectViewContainerRef()),
inputs: {myIf: 'myIf'},
features: [PublicFeature, NgOnChangesFeature()]
});
}
const directives = [MyComp, Directive, DirectiveSameInstance, IfDirective];
it('should inject current component ChangeDetectorRef into directives on components', () => {
/** <my-comp dir dirSameInstance #dir="dir"></my-comp> {{ dir.value }} */
const MyApp = createComponent('my-app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'my-comp', ['dir', '', 'dirSame', ''], ['dir', 'dir']);
elementEnd();
text(2);
}
let tmp: any;
if (rf & RenderFlags.Update) {
tmp = load(1);
textBinding(2, bind(tmp.value));
}
}, directives);
const app = renderComponent(MyApp);
// ChangeDetectorRef is the token, ViewRef has historically been the constructor
expect(toHtml(app)).toEqual('<my-comp dir="" dirsame=""></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,
selectors: [['my-app']],
factory: () => new MyApp(injectChangeDetectorRef()),
/** <div dir dirSameInstance #dir="dir"> {{ dir.value }} </div> */
template: function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '', 'dirSame', ''], ['dir', 'dir']);
{ text(2); }
elementEnd();
}
let tmp: any;
if (rf & RenderFlags.Update) {
tmp = load(1);
textBinding(2, bind(tmp.value));
}
},
directives: directives
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsame="">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,
selectors: [['my-app']],
factory: () => new MyApp(injectChangeDetectorRef()),
/**
* <my-comp>
* <div dir dirSameInstance #dir="dir"></div>
* </my-comp>
* {{ dir.value }}
*/
template: function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'my-comp');
{
elementStart(1, 'div', ['dir', '', 'dirSame', ''], ['dir', 'dir']);
elementEnd();
}
elementEnd();
text(3);
}
const tmp = load(2) as any;
if (rf & RenderFlags.Update) {
textBinding(3, bind(tmp.value));
}
},
directives: directives
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<my-comp><div dir="" dirsame=""></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,
selectors: [['my-app']],
factory: () => new MyApp(injectChangeDetectorRef()),
/**
* % if (showing) {
* <div dir dirSameInstance #dir="dir"> {{ dir.value }} </div>
* % }
*/
template: function(rf: RenderFlags, ctx: MyApp) {
if (rf & RenderFlags.Create) {
container(0);
}
if (rf & RenderFlags.Update) {
containerRefreshStart(0);
{
if (ctx.showing) {
let rf1 = embeddedViewStart(0);
if (rf1 & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '', 'dirSame', ''], ['dir', 'dir']);
{ text(2); }
elementEnd();
}
let tmp: any;
if (rf1 & RenderFlags.Update) {
tmp = load(1);
textBinding(2, bind(tmp.value));
}
}
embeddedViewEnd();
}
containerRefreshEnd();
}
},
directives: directives
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsame="">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 MyApp {
showing = true;
constructor(public cdr: ChangeDetectorRef) {}
static ngComponentDef = defineComponent({
type: MyApp,
selectors: [['my-app']],
factory: () => new MyApp(injectChangeDetectorRef()),
/** <div *myIf="showing" dir dirSameInstance #dir="dir"> {{ dir.value }} </div> */
template: function(rf: RenderFlags, ctx: MyApp) {
if (rf & RenderFlags.Create) {
container(0, C1, undefined, ['myIf', 'showing']);
}
if (rf & RenderFlags.Update) {
containerRefreshStart(0);
containerRefreshEnd();
}
function C1(rf1: RenderFlags, ctx1: any) {
if (rf1 & RenderFlags.Create) {
elementStart(0, 'div', ['dir', '', 'dirSame', ''], ['dir', 'dir']);
{ text(2); }
elementEnd();
}
let tmp: any;
if (rf1 & RenderFlags.Update) {
tmp = load(1);
textBinding(2, bind(tmp.value));
}
}
},
directives: directives
});
}
const app = renderComponent(MyApp);
expect(toHtml(app)).toEqual('<div dir="" dirsame="">ViewRef</div>');
expect((app !.cdr as ViewRef<MyApp>).context).toBe(app);
expect(dir !.cdr).toBe(app.cdr);
expect(dir !.cdr).toBe(dirSameInstance !.cdr);
});
});
describe('@Attribute', () => {
it('should inject attribute', () => {
let exist: string|undefined = 'wrong';
let nonExist: string|undefined = 'wrong';
const MyApp = createComponent('my-app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['exist', 'existValue', 'other', 'ignore']);
exist = injectAttribute('exist');
nonExist = injectAttribute('nonExist');
}
});
const fixture = new ComponentFixture(MyApp);
expect(exist).toEqual('existValue');
expect(nonExist).toEqual(undefined);
});
// https://stackblitz.com/edit/angular-8ytqkp?file=src%2Fapp%2Fapp.component.ts
it('should not inject attributes representing bindings and outputs', () => {
let exist: string|undefined = 'wrong';
let nonExist: string|undefined = 'wrong';
const MyApp = createComponent('my-app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['exist', 'existValue', AttributeMarker.SelectOnly, 'nonExist']);
exist = injectAttribute('exist');
nonExist = injectAttribute('nonExist');
}
});
const fixture = new ComponentFixture(MyApp);
expect(exist).toEqual('existValue');
expect(nonExist).toEqual(undefined);
});
it('should not accidentally inject attributes representing bindings and outputs', () => {
let exist: string|undefined = 'wrong';
let nonExist: string|undefined = 'wrong';
const MyApp = createComponent('my-app', function(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', [
'exist', 'existValue', AttributeMarker.SelectOnly, 'binding1', 'nonExist', 'binding2'
]);
exist = injectAttribute('exist');
nonExist = injectAttribute('nonExist');
}
});
const fixture = new ComponentFixture(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, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 1, InjectFlags.Default)).toEqual(null);
expect(bloomFindPossibleInjector(di, 32, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 64, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 96, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 127, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 161, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 188, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 223, InjectFlags.Default)).toEqual(di);
expect(bloomFindPossibleInjector(di, 255, InjectFlags.Default)).toEqual(di);
});
});
it('should inject from parent view', () => {
const ParentDirective = createDirective('parentDir');
class ChildDirective {
value: string;
constructor(public parent: any) { this.value = (parent.constructor as any).name; }
static ngDirectiveDef = defineDirective({
type: ChildDirective,
selectors: [['', 'childDir', '']],
factory: () => new ChildDirective(directiveInject(ParentDirective)),
features: [PublicFeature],
exportAs: 'childDir'
});
}
class Child2Directive {
value: boolean;
constructor(parent: any, child: ChildDirective) { this.value = parent === child.parent; }
static ngDirectiveDef = defineDirective({
selectors: [['', 'child2Dir', '']],
type: Child2Directive,
factory: () => new Child2Directive(
directiveInject(ParentDirective), directiveInject(ChildDirective)),
exportAs: 'child2Dir'
});
}
/**
* <div parentDir>
* <span childDir child2Dir #child1="childDir" #child2="child2Dir">
* {{ child1.value }} - {{ child2.value }}
* </span>
* </div>
*/
function Template(rf: RenderFlags, ctx: any) {
if (rf & RenderFlags.Create) {
elementStart(0, 'div', ['parentDir', '']);
{ container(1); }
elementEnd();
}
if (rf & RenderFlags.Update) {
containerRefreshStart(1);
{
let rf1 = embeddedViewStart(0);
if (rf1 & RenderFlags.Create) {
elementStart(
0, 'span', ['childDir', '', 'child2Dir', ''],
['child1', 'childDir', 'child2', 'child2Dir']);
{ text(3); }
elementEnd();
}
let tmp1: any;
let tmp2: any;
if (rf & RenderFlags.Update) {
tmp1 = load(1);
tmp2 = load(2);
textBinding(3, interpolation2('', tmp1.value, '-', tmp2.value, ''));
}
embeddedViewEnd();
}
containerRefreshEnd();
}
}
const defs = [ChildDirective, Child2Directive, ParentDirective];
expect(renderToHtml(Template, {}, defs))
.toEqual('<div parentdir=""><span child2dir="" childdir="">Directive-true</span></div>');
});
it('should inject from module Injector', () => {
});
});
describe('getOrCreateNodeInjector', () => {
it('should handle initial undefined state', () => {
const contentView =
createLViewData(null !, createTView(-1, null, null, null), null, LViewFlags.CheckAlways);
const oldView = enterView(contentView, null !);
try {
const parent = createLNode(0, TNodeType.Element, null, null, 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.tNode as{parent: any}).parent = undefined;
const injector = getOrCreateNodeInjector();
expect(injector).not.toBe(null);
} finally {
leaveView(oldView);
}
});
});
});