angular-docs-cn/packages/compiler/test/directive_normalizer_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 {CompileAnimationEntryMetadata} from '@angular/compiler';
import {CompileDirectiveMetadata, CompileStylesheetMetadata, CompileTemplateMetadata, CompileTypeMetadata} from '@angular/compiler/src/compile_metadata';
import {CompilerConfig} from '@angular/compiler/src/config';
import {DirectiveNormalizer} from '@angular/compiler/src/directive_normalizer';
import {ResourceLoader} from '@angular/compiler/src/resource_loader';
import {MockResourceLoader} from '@angular/compiler/testing/src/resource_loader_mock';
import {TEST_COMPILER_PROVIDERS} from '@angular/compiler/testing/src/test_bindings';
import {ViewEncapsulation} from '@angular/core/src/metadata/view';
import {TestBed} from '@angular/core/testing';
import {AsyncTestCompleter, beforeEach, describe, expect, inject, it} from '@angular/core/testing/src/testing_internal';
import {noUndefined} from '../src/util';
import {SpyResourceLoader} from './spies';
const SOME_MODULE_URL = 'package:some/module/a.js';
const SOME_HTTP_MODULE_URL = 'http://some/module/a.js';
function normalizeTemplate(normalizer: DirectiveNormalizer, o: {
ngModuleType?: any; componentType?: any; moduleUrl?: string; template?: string | null;
templateUrl?: string | null;
styles?: string[];
styleUrls?: string[];
interpolation?: [string, string] | null;
encapsulation?: ViewEncapsulation | null;
animations?: CompileAnimationEntryMetadata[];
}) {
return normalizer.normalizeTemplate({
ngModuleType: noUndefined(o.ngModuleType),
componentType: noUndefined(o.componentType),
moduleUrl: noUndefined(o.moduleUrl),
template: noUndefined(o.template),
templateUrl: noUndefined(o.templateUrl),
styles: noUndefined(o.styles),
styleUrls: noUndefined(o.styleUrls),
interpolation: noUndefined(o.interpolation),
encapsulation: noUndefined(o.encapsulation),
animations: noUndefined(o.animations)
});
}
function normalizeTemplateOnly(normalizer: DirectiveNormalizer, o: {
ngModuleType?: any; componentType?: any; moduleUrl?: string; template?: string | null;
templateUrl?: string | null;
styles?: string[];
styleUrls?: string[];
interpolation?: [string, string] | null;
encapsulation?: ViewEncapsulation | null;
animations?: CompileAnimationEntryMetadata[];
}) {
return normalizer.normalizeTemplateOnly({
ngModuleType: noUndefined(o.ngModuleType),
componentType: noUndefined(o.componentType),
moduleUrl: noUndefined(o.moduleUrl),
template: noUndefined(o.template),
templateUrl: noUndefined(o.templateUrl),
styles: noUndefined(o.styles),
styleUrls: noUndefined(o.styleUrls),
interpolation: noUndefined(o.interpolation),
encapsulation: noUndefined(o.encapsulation),
animations: noUndefined(o.animations)
});
}
function compileTemplateMetadata({encapsulation, template, templateUrl, styles, styleUrls,
externalStylesheets, animations, ngContentSelectors,
interpolation, isInline}: {
encapsulation?: ViewEncapsulation | null,
template?: string | null,
templateUrl?: string | null,
styles?: string[],
styleUrls?: string[],
externalStylesheets?: CompileStylesheetMetadata[],
ngContentSelectors?: string[],
animations?: any[],
interpolation?: [string, string] | null,
isInline?: boolean
}): CompileTemplateMetadata {
return new CompileTemplateMetadata({
encapsulation: encapsulation || null,
template: template || null,
templateUrl: templateUrl || null,
styles: styles || [],
styleUrls: styleUrls || [],
externalStylesheets: externalStylesheets || [],
ngContentSelectors: ngContentSelectors || [],
animations: animations || [],
interpolation: interpolation || null,
isInline: !!isInline,
});
}
function normalizeLoadedTemplate(
normalizer: DirectiveNormalizer, o: {
ngModuleType?: any; componentType?: any; moduleUrl?: string; template?: string | null;
templateUrl?: string | null;
styles?: string[];
styleUrls?: string[];
interpolation?: [string, string] | null;
encapsulation?: ViewEncapsulation | null;
animations?: CompileAnimationEntryMetadata[];
},
template: string, templateAbsUrl: string) {
return normalizer.normalizeLoadedTemplate(
{
ngModuleType: o.ngModuleType || null,
componentType: o.componentType || null,
moduleUrl: o.moduleUrl || '',
template: o.template || null,
templateUrl: o.templateUrl || null,
styles: o.styles || [],
styleUrls: o.styleUrls || [],
interpolation: o.interpolation || null,
encapsulation: o.encapsulation || null,
animations: o.animations || [],
},
template, templateAbsUrl);
}
export function main() {
describe('DirectiveNormalizer', () => {
beforeEach(() => { TestBed.configureCompiler({providers: TEST_COMPILER_PROVIDERS}); });
describe('normalizeDirective', () => {
it('should throw if no template was specified',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
expect(() => normalizeTemplate(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
}))
.toThrowError('No template specified for component SomeComp');
}));
it('should throw if template is not a string',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
expect(() => normalizeTemplate(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
template: <any>{}
}))
.toThrowError('The template specified for component SomeComp is not a string');
}));
it('should throw if templateUrl is not a string',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
expect(() => normalizeTemplate(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
templateUrl: <any>{}
}))
.toThrowError('The templateUrl specified for component SomeComp is not a string');
}));
it('should throw if both template and templateUrl are defined',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
expect(() => normalizeTemplate(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
template: '',
templateUrl: '',
}))
.toThrowError(`'SomeComp' component cannot define both template and templateUrl`);
}));
});
describe('normalizeTemplateOnly sync', () => {
it('should store the template',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = <CompileTemplateMetadata>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: 'a',
templateUrl: null,
styles: [],
styleUrls: []
});
expect(template.template).toEqual('a');
expect(template.templateUrl).toEqual('package:some/module/a.js');
expect(template.isInline).toBe(true);
}));
it('should resolve styles on the annotation against the moduleUrl',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = <CompileTemplateMetadata>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: '',
templateUrl: null,
styles: [],
styleUrls: ['test.css']
});
expect(template.styleUrls).toEqual(['package:some/module/test.css']);
}));
it('should resolve styles in the template against the moduleUrl',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = <CompileTemplateMetadata>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: '<style>@import test.css</style>',
templateUrl: null,
styles: [],
styleUrls: []
});
expect(template.styleUrls).toEqual(['package:some/module/test.css']);
}));
it('should use ViewEncapsulation.Emulated by default',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = <CompileTemplateMetadata>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: '',
templateUrl: null,
styles: [],
styleUrls: ['test.css']
});
expect(template.encapsulation).toEqual(ViewEncapsulation.Emulated);
}));
it('should use default encapsulation provided by CompilerConfig',
inject(
[CompilerConfig, DirectiveNormalizer],
(config: CompilerConfig, normalizer: DirectiveNormalizer) => {
config.defaultEncapsulation = ViewEncapsulation.None;
const template = <CompileTemplateMetadata>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: undefined,
template: '',
templateUrl: undefined,
styles: [],
styleUrls: ['test.css']
});
expect(template.encapsulation).toEqual(ViewEncapsulation.None);
}));
});
describe('templateUrl', () => {
it('should load a template from a url that is resolved against moduleUrl',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: MockResourceLoader) => {
resourceLoader.expect('package:some/module/sometplurl.html', 'a');
(<Promise<CompileTemplateMetadata>>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: null,
templateUrl: 'sometplurl.html',
styles: [],
styleUrls: ['test.css']
})).then((template) => {
expect(template.template).toEqual('a');
expect(template.templateUrl).toEqual('package:some/module/sometplurl.html');
expect(template.isInline).toBe(false);
async.done();
});
resourceLoader.flush();
}));
it('should resolve styles on the annotation against the moduleUrl',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: MockResourceLoader) => {
resourceLoader.expect('package:some/module/tpl/sometplurl.html', '');
(<Promise<CompileTemplateMetadata>>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: null,
templateUrl: 'tpl/sometplurl.html',
styles: [],
styleUrls: ['test.css']
})).then((template) => {
expect(template.styleUrls).toEqual(['package:some/module/test.css']);
async.done();
});
resourceLoader.flush();
}));
it('should resolve styles in the template against the templateUrl',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: MockResourceLoader) => {
resourceLoader.expect(
'package:some/module/tpl/sometplurl.html', '<style>@import test.css</style>');
(<Promise<CompileTemplateMetadata>>normalizeTemplateOnly(normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
template: null,
templateUrl: 'tpl/sometplurl.html',
styles: [],
styleUrls: []
})).then((template) => {
expect(template.styleUrls).toEqual(['package:some/module/tpl/test.css']);
async.done();
});
resourceLoader.flush();
}));
});
describe('normalizeExternalStylesheets', () => {
beforeEach(() => {
TestBed.configureCompiler(
{providers: [{provide: ResourceLoader, useClass: SpyResourceLoader}]});
});
it('should load an external stylesheet',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: SpyResourceLoader) => {
programResourceLoaderSpy(resourceLoader, {'package:some/module/test.css': 'a'});
(<Promise<CompileTemplateMetadata>>normalizer.normalizeExternalStylesheets(
compileTemplateMetadata({
template: '',
templateUrl: '',
styleUrls: ['package:some/module/test.css']
})))
.then((template) => {
expect(template.externalStylesheets.length).toBe(1);
expect(template.externalStylesheets[0]).toEqual(new CompileStylesheetMetadata({
moduleUrl: 'package:some/module/test.css',
styles: ['a'],
styleUrls: []
}));
async.done();
});
}));
it('should load stylesheets referenced by external stylesheets',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: SpyResourceLoader) => {
programResourceLoaderSpy(resourceLoader, {
'package:some/module/test.css': 'a@import "test2.css"',
'package:some/module/test2.css': 'b'
});
(<Promise<CompileTemplateMetadata>>normalizer.normalizeExternalStylesheets(
compileTemplateMetadata({
template: '',
templateUrl: '',
styleUrls: ['package:some/module/test.css']
})))
.then((template) => {
expect(template.externalStylesheets.length).toBe(2);
expect(template.externalStylesheets[0]).toEqual(new CompileStylesheetMetadata({
moduleUrl: 'package:some/module/test.css',
styles: ['a'],
styleUrls: ['package:some/module/test2.css']
}));
expect(template.externalStylesheets[1]).toEqual(new CompileStylesheetMetadata({
moduleUrl: 'package:some/module/test2.css',
styles: ['b'],
styleUrls: []
}));
async.done();
});
}));
});
describe('caching', () => {
it('should work for templateUrl',
inject(
[AsyncTestCompleter, DirectiveNormalizer, ResourceLoader],
(async: AsyncTestCompleter, normalizer: DirectiveNormalizer,
resourceLoader: MockResourceLoader) => {
resourceLoader.expect('package:some/module/cmp.html', 'a');
const prenormMeta = {
ngModuleType: null as any,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
templateUrl: 'cmp.html',
};
Promise
.all([
normalizeTemplateOnly(normalizer, prenormMeta),
normalizeTemplateOnly(normalizer, prenormMeta)
])
.then((templates: CompileTemplateMetadata[]) => {
expect(templates[0].template).toEqual('a');
expect(templates[1].template).toEqual('a');
async.done();
});
resourceLoader.flush();
}));
});
describe('normalizeLoadedTemplate', () => {
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it('should store the viewEncapsulation in the result',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const viewEncapsulation = ViewEncapsulation.Native;
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: viewEncapsulation,
styles: [],
styleUrls: []
},
'', 'package:some/module/');
expect(template.encapsulation).toBe(viewEncapsulation);
}));
it('should keep the template as html',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'a', 'package:some/module/');
expect(template.template).toEqual('a');
}));
it('should collect ngContent',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<ng-content select="a"></ng-content>', 'package:some/module/');
expect(template.ngContentSelectors).toEqual(['a']);
}));
it('should normalize ngContent wildcard selector',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<ng-content></ng-content><ng-content select></ng-content><ng-content select="*"></ng-content>',
'package:some/module/');
expect(template.ngContentSelectors).toEqual(['*', '*', '*']);
}));
it('should collect top level styles in the template',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<style>a</style>', 'package:some/module/');
expect(template.styles).toEqual(['a']);
}));
it('should collect styles inside in elements',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<div><style>a</style></div>', 'package:some/module/');
expect(template.styles).toEqual(['a']);
}));
it('should collect styleUrls in the template',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<link rel="stylesheet" href="aUrl">', 'package:some/module/');
expect(template.styleUrls).toEqual(['package:some/module/aUrl']);
}));
it('should collect styleUrls in elements',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<div><link rel="stylesheet" href="aUrl"></div>', 'package:some/module/');
expect(template.styleUrls).toEqual(['package:some/module/aUrl']);
}));
it('should ignore link elements with non stylesheet rel attribute',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<link href="b" rel="a">', 'package:some/module/');
expect(template.styleUrls).toEqual([]);
}));
it('should ignore link elements with absolute urls but non package: scheme',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<link href="http://some/external.css" rel="stylesheet">', 'package:some/module/');
expect(template.styleUrls).toEqual([]);
}));
it('should extract @import style urls into styleAbsUrl',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: ['@import "test.css";'],
styleUrls: []
},
'', 'package:some/module/id');
expect(template.styles).toEqual(['']);
expect(template.styleUrls).toEqual(['package:some/module/test.css']);
}));
it('should not resolve relative urls in inline styles',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: ['.foo{background-image: url(\'double.jpg\');'],
styleUrls: []
},
'', 'package:some/module/id');
expect(template.styles).toEqual(['.foo{background-image: url(\'double.jpg\');']);
}));
it('should resolve relative style urls in styleUrls',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: ['test.css']
},
'', 'package:some/module/id');
expect(template.styles).toEqual([]);
expect(template.styleUrls).toEqual(['package:some/module/test.css']);
}));
it('should resolve relative style urls in styleUrls with http directive url',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_HTTP_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: ['test.css']
},
'', 'http://some/module/id');
expect(template.styles).toEqual([]);
expect(template.styleUrls).toEqual(['http://some/module/test.css']);
}));
it('should normalize ViewEncapsulation.Emulated to ViewEncapsulation.None if there are no styles nor stylesheets',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: ViewEncapsulation.Emulated,
styles: [],
styleUrls: []
},
'', 'package:some/module/id');
expect(template.encapsulation).toEqual(ViewEncapsulation.None);
}));
it('should ignore ng-content in elements with ngNonBindable',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<div ngNonBindable><ng-content select="a"></ng-content></div>',
'package:some/module/');
expect(template.ngContentSelectors).toEqual([]);
}));
it('should still collect <style> in elements with ngNonBindable',
inject([DirectiveNormalizer], (normalizer: DirectiveNormalizer) => {
const template = normalizeLoadedTemplate(
normalizer, {
ngModuleType: null,
componentType: SomeComp,
moduleUrl: SOME_MODULE_URL,
encapsulation: null,
styles: [],
styleUrls: []
},
'<div ngNonBindable><style>div {color:red}</style></div>', 'package:some/module/');
expect(template.styles).toEqual(['div {color:red}']);
}));
});
});
}
function programResourceLoaderSpy(spy: SpyResourceLoader, results: {[key: string]: string}) {
spy.spy('get').and.callFake((url: string): Promise<any> => {
const result = results[url];
if (result) {
return Promise.resolve(result);
} else {
return Promise.reject(`Unknown mock url ${url}`);
}
});
}
class SomeComp {}