angular-docs-cn/packages/compiler-cli/test/compliance/r3_view_compiler_template_s...

673 lines
21 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 {AttributeMarker} from '@angular/compiler/src/core';
import {setup} from '@angular/compiler/test/aot/test_util';
import {compile, expectEmit} from './mock_compile';
describe('compiler compliance: template', () => {
const angularFiles = setup({
compileAngular: false,
compileFakeCore: true,
compileAnimations: false,
});
it('should correctly bind to context in nested template', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<ul *ngFor="let outer of items">
<li *ngFor="let middle of outer.items">
<div *ngFor="let inner of items"
(click)="onClick(outer, middle, inner)"
[title]="format(outer, middle, inner, component)"
>
{{format(outer, middle, inner, component)}}
</div>
</li>
</ul>\`
})
export class MyComponent {
component = this;
format(outer: any, middle: any, inner: any) { }
onClick(outer: any, middle: any, inner: any) { }
}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
// The template should look like this (where IDENT is a wild card for an identifier):
const template = `
const $c0$ = [${AttributeMarker.Template}, "ngFor", "ngForOf"];
const $c1$ = [${AttributeMarker.Bindings}, "title", "click", ${AttributeMarker.Template}, "ngFor", "ngForOf"];
const $c2$ = [${AttributeMarker.Bindings}, "title", "click"];
function MyComponent_ul_0_li_1_div_1_Template(rf, ctx) {
if (rf & 1) {
const $s$ = $i0$.ɵgetCurrentView();
$i0$.ɵelementStart(0, "div", $c2$);
$i0$.ɵlistener("click", function MyComponent_ul_0_li_1_div_1_Template_div_click_0_listener($event){
$i0$.ɵrestoreView($s$);
const $inner$ = ctx.$implicit;
const $middle$ = $i0$.ɵnextContext().$implicit;
const $outer$ = $i0$.ɵnextContext().$implicit;
const $myComp$ = $i0$.ɵnextContext();
return $myComp$.onClick($outer$, $middle$, $inner$);
});
$i0$.ɵtext(1);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $inner1$ = ctx.$implicit;
const $middle1$ = $i0$.ɵnextContext().$implicit;
const $outer1$ = $i0$.ɵnextContext().$implicit;
const $myComp1$ = $i0$.ɵnextContext();
$i0$.ɵelementProperty(0, "title", $i0$.ɵbind($myComp1$.format($outer1$, $middle1$, $inner1$, $myComp1$.component)));
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵtextBinding(1, $i0$.ɵinterpolation1(" ", $myComp1$.format($outer1$, $middle1$, $inner1$, $myComp1$.component), " "));
}
}
function MyComponent_ul_0_li_1_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "li");
$i0$.ɵtemplate(1, MyComponent_ul_0_li_1_div_1_Template, 2, 2, "div", $c1$);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $myComp2$ = $i0$.ɵnextContext(2);
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵelementProperty(1, "ngForOf", $i0$.ɵbind($myComp2$.items));
}
}
function MyComponent_ul_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "ul");
$i0$.ɵtemplate(1, MyComponent_ul_0_li_1_Template, 2, 1, "li", $c0$);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $outer2$ = ctx.$implicit;
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵelementProperty(1, "ngForOf", $i0$.ɵbind($outer2$.items));
}
}
// ...
template:function MyComponent_Template(rf, ctx){
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_ul_0_Template, 2, 1, "ul", $c0$);
}
if (rf & 2) {
$i0$.ɵelementProperty(0, "ngForOf", $i0$.ɵbind(ctx.items));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should correctly bind to context in nested template with many bindings', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<div *ngFor="let d of _data; let i = index" (click)="_handleClick(d, i)"></div>
\`
})
export class MyComponent {
_data = [1,2,3];
_handleClick(d: any, i: any) {}
}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $t0_attrs$ = [${AttributeMarker.Bindings}, "click", ${AttributeMarker.Template}, "ngFor", "ngForOf"];
const $e_attrs$ = [${AttributeMarker.Bindings}, "click"];
function MyComponent_div_0_Template(rf, ctx) {
if (rf & 1) {
const $s$ = $r3$.ɵgetCurrentView();
$r3$.ɵelementStart(0, "div", $e_attrs$);
$r3$.ɵlistener("click", function MyComponent_div_0_Template_div_click_0_listener($event) {
$r3$.ɵrestoreView($s$);
const $d$ = ctx.$implicit;
const $i$ = ctx.index;
const $comp$ = $r3$.ɵnextContext();
return $comp$._handleClick($d$, $i$);
});
$r3$.ɵelementEnd();
}
}
// ...
template: function MyComponent_Template(rf, ctx) {
if (rf & 1) {
$r3$.ɵtemplate(0, MyComponent_div_0_Template, 1, 0, "div", $t0_attrs$);
}
if (rf & 2) {
$r3$.ɵelementProperty(0, "ngForOf", $r3$.ɵbind(ctx._data));
}
}
`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should support ngFor context variables', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<span *ngFor="let item of items; index as i">
{{ i }} - {{ item }}
</span>\`
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $c0$ = [${AttributeMarker.Template}, "ngFor", "ngForOf"];
function MyComponent_span_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "span");
$i0$.ɵtext(1);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $item$ = ctx.$implicit;
const $i$ = ctx.index;
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵtextBinding(1, $i0$.ɵinterpolation2(" ", $i$, " - ", $item$, " "));
}
}
// ...
template:function MyComponent_Template(rf, ctx){
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_span_0_Template, 2, 2, "span", _c0);
}
if (rf & 2) {
$i0$.ɵelementProperty(0, "ngForOf", $i0$.ɵbind(ctx.items));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should support ngFor context variables in parent views', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<div *ngFor="let item of items; index as i">
<span *ngIf="showing">
{{ i }} - {{ item }}
</span>
</div>\`
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $c0$ = [${AttributeMarker.Template}, "ngFor", "ngForOf"];
const $c1$ = [${AttributeMarker.Template}, "ngIf"];
function MyComponent_div_0_span_1_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "span");
$i0$.ɵtext(1);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $div$ = $i0$.ɵnextContext();
const $i$ = $div$.index;
const $item$ = $div$.$implicit;
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵtextBinding(1, $i0$.ɵinterpolation2(" ", $i$, " - ", $item$, " "));
}
}
function MyComponent_div_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "div");
$i0$.ɵtemplate(1, MyComponent_div_0_span_1_Template, 2, 2, "span", $c1$);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $app$ = $i0$.ɵnextContext();
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵelementProperty(1, "ngIf", $i0$.ɵbind($app$.showing));
}
}
// ...
template:function MyComponent_Template(rf, ctx){
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_div_0_Template, 2, 1, "div", $c0$);
}
if (rf & 2) {
$i0$.ɵelementProperty(0, "ngForOf", $i0$.ɵbind(ctx.items));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should correctly skip contexts as needed', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<div *ngFor="let outer of items">
<div *ngFor="let middle of outer.items">
<div *ngFor="let inner of middle.items">
{{ middle.value }} - {{ name }}
</div>
</div>
</div>\`
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
// The template should look like this (where IDENT is a wild card for an identifier):
const template = `
const $c0$ = [${AttributeMarker.Template}, "ngFor", "ngForOf"];
function MyComponent_div_0_div_1_div_1_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "div");
$i0$.ɵtext(1);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $middle$ = $i0$.ɵnextContext().$implicit;
const $myComp$ = $i0$.ɵnextContext(2);
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵtextBinding(1, $i0$.ɵinterpolation2(" ", $middle$.value, " - ", $myComp$.name, " "));
}
}
function MyComponent_div_0_div_1_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "div");
$i0$.ɵtemplate(1, MyComponent_div_0_div_1_div_1_Template, 2, 2, "div", $c0$);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $middle$ = ctx.$implicit;
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵelementProperty(1, "ngForOf", $i0$.ɵbind($middle$.items));
}
}
function MyComponent_div_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelementStart(0, "div");
$i0$.ɵtemplate(1, MyComponent_div_0_div_1_Template, 2, 1, "div", $c0$);
$i0$.ɵelementEnd();
}
if (rf & 2) {
const $outer$ = ctx.$implicit;
$r3$.ɵflushHooksUpTo(1);
$i0$.ɵelementProperty(1, "ngForOf", $i0$.ɵbind($outer$.items));
}
}
// ...
template:function MyComponent_Template(rf, ctx){
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_div_0_Template, 2, 1, "div", $c0$);
}
if (rf & 2) {
$i0$.ɵelementProperty(0, "ngForOf", $i0$.ɵbind(ctx.items));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should support <ng-template>', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<ng-template [boundAttr]="b" attr="l">
some-content
</ng-template>\`
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $c0$ = ["attr", "l", ${AttributeMarker.Bindings}, "boundAttr"];
function MyComponent_ng_template_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtext(0, " some-content ");
}
}
// ...
template: function MyComponent_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_ng_template_0_Template, 1, 0, "ng-template", $c0$);
}
if (rf & 2) {
$i0$.ɵelementProperty(0, "boundAttr", $i0$.ɵbind(ctx.b));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should support local refs on <ng-template>', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: '<ng-template #foo>some-content</ng-template>',
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $t0_refs$ = ["foo", ""];
function MyComponent_ng_template_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtext(0, "some-content");
}
}
// ...
template: function MyComponent_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_ng_template_0_Template, 1, 0, "ng-template", null, $t0_refs$, $i0$.ɵtemplateRefExtractor);
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should support directive outputs on <ng-template>', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: '<ng-template (outDirective)="$event.doSth()"></ng-template>',
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $t0_attrs$ = [${AttributeMarker.Bindings}, "outDirective"];
function MyComponent_ng_template_0_Template(rf, ctx) { }
// ...
template: function MyComponent_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_ng_template_0_Template, 0, 0, "ng-template", $t0_attrs$);
$i0$.ɵlistener("outDirective", function MyComponent_Template_ng_template_outDirective_0_listener($event) { return $event.doSth(); });
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
it('should create unique template function names even for similar nested template structures',
() => {
const files = {
app: {
'spec1.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'a-component',
template: \`
<div *ngFor="let item of items">
<p *ngIf="item < 10">less than 10</p>
<p *ngIf="item < 10">less than 10</p>
</div>
<div *ngFor="let item of items">
<p *ngIf="item > 10">more than 10</p>
</div>
\`,
})
export class AComponent {
items = [4, 2];
}
@NgModule({declarations: [AComponent]})
export class AModule {}
`,
'spec2.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'b-component',
template: \`
<div *ngFor="let item of items">
<ng-container *ngFor="let subitem of item.subitems">
<p *ngIf="subitem < 10">less than 10</p>
<p *ngIf="subitem < 10">less than 10</p>
</ng-container>
<ng-container *ngFor="let subitem of item.subitems">
<p *ngIf="subitem < 10">less than 10</p>
</ng-container>
</div>
<div *ngFor="let item of items">
<ng-container *ngFor="let subitem of item.subitems">
<p *ngIf="subitem > 10">more than 10</p>
</ng-container>
</div>
\`,
})
export class BComponent {
items = [
{subitems: [1, 3]},
{subitems: [3, 7]},
];
}
@NgModule({declarations: [BComponent]})
export class BModule {}
`,
},
};
const result = compile(files, angularFiles);
const allTemplateFunctionsNames = (result.source.match(/function ([^\s(]+)/g) || [])
.map(x => x.slice(9))
.filter(x => x.includes('Template'))
.sort();
const uniqueTemplateFunctionNames = Array.from(new Set(allTemplateFunctionsNames));
// Expected template function:
// - 5 for AComponent's template.
// - 9 for BComponent's template.
// - 2 for the two components.
expect(allTemplateFunctionsNames.length).toBe(5 + 9 + 2);
expect(allTemplateFunctionsNames).toEqual(uniqueTemplateFunctionNames);
});
it('should create unique listener function names even for similar nested template structures',
() => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<div *ngFor="let item of items">
<p (click)="$event">{{ item }}</p>
<p (click)="$event">{{ item }}</p>
</div>
<div *ngFor="let item of items">
<p (click)="$event">{{ item }}</p>
</div>
\`,
})
export class MyComponent {
items = [4, 2];
}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`,
},
};
const result = compile(files, angularFiles);
const allListenerFunctionsNames = (result.source.match(/function ([^\s(]+)/g) || [])
.map(x => x.slice(9))
.filter(x => x.includes('listener'))
.sort();
const uniqueListenerFunctionNames = Array.from(new Set(allListenerFunctionsNames));
expect(allListenerFunctionsNames.length).toBe(3);
expect(allListenerFunctionsNames).toEqual(uniqueListenerFunctionNames);
});
it('should support pipes in template bindings', () => {
const files = {
app: {
'spec.ts': `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
template: \`
<div *ngIf="val | pipe"></div>\`
})
export class MyComponent {}
@NgModule({declarations: [MyComponent]})
export class MyModule {}
`
}
};
const template = `
const $c0$ = [${AttributeMarker.Template}, "ngIf"];
function MyComponent_div_0_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵelement(0, "div");
}
}
// ...
template: function MyComponent_Template(rf, ctx) {
if (rf & 1) {
$i0$.ɵtemplate(0, MyComponent_div_0_Template, 1, 0, "div", $c0$);
$i0$.ɵpipe(1, "pipe");
} if (rf & 2) {
$i0$.ɵelementProperty(0, "ngIf", $i0$.ɵbind($i0$.ɵpipeBind1(1, 1, ctx.val)));
}
}`;
const result = compile(files, angularFiles);
expectEmit(result.source, template, 'Incorrect template');
});
});