angular-docs-cn/packages/language-service/test/html_info_spec.ts

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/**
* @license
* Copyright Google LLC 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 {DomElementSchemaRegistry} from '@angular/compiler';
import {SchemaInformation} from '../src/html_info';
describe('html_info', () => {
const domRegistry = new DomElementSchemaRegistry();
it('should have the same elements as the dom registry', () => {
// If this test fails, replace the SCHEMA constant in html_info with the one
// from dom_element_schema_registry and also verify the code to interpret
// the schema is the same.
const domElements = domRegistry.allKnownElementNames();
const infoElements = SchemaInformation.instance.allKnownElements();
const uniqueToDom = uniqueElements(infoElements, domElements);
const uniqueToInfo = uniqueElements(domElements, infoElements);
expect(uniqueToDom).toEqual([]);
expect(uniqueToInfo).toEqual([]);
});
it('should have at least a sub-set of properties', () => {
const elements = SchemaInformation.instance.allKnownElements();
for (const element of elements) {
for (const prop of SchemaInformation.instance.propertiesOf(element)) {
expect(domRegistry.hasProperty(element, prop, [])).toBeTrue();
}
}
});
});
function uniqueElements<T>(a: T[], b: T[]): T[] {
const s = new Set<T>();
for (const aItem of a) {
s.add(aItem);
}
const result: T[] = [];
const reported = new Set<T>();
for (const bItem of b) {
if (!s.has(bItem) && !reported.has(bItem)) {
reported.add(bItem);
result.push(bItem);
}
}
return result;
}