angular-docs-cn/packages/compiler/test/i18n/serializers/i18n_ast_spec.ts

73 lines
2.2 KiB
TypeScript

/**
* @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 * as i18n from '@angular/compiler/src/i18n/i18n_ast';
import {serializeNodes} from '../../../src/i18n/digest';
import {_extractMessages} from '../i18n_parser_spec';
{
describe('i18n AST', () => {
describe('CloneVisitor', () => {
it('should clone an AST', () => {
const messages = _extractMessages(
'<div i18n="m|d">b{count, plural, =0 {{sex, select, male {m}}}}a</div>');
const nodes = messages[0].nodes;
const text = serializeNodes(nodes).join('');
expect(text).toEqual(
'b<ph icu name="ICU">{count, plural, =0 {[{sex, select, male {[m]}}]}}</ph>a');
const visitor = new i18n.CloneVisitor();
const cloneNodes = nodes.map(n => n.visit(visitor));
expect(serializeNodes(nodes)).toEqual(serializeNodes(cloneNodes));
nodes.forEach((n: i18n.Node, i: number) => {
expect(n).toEqual(cloneNodes[i]);
expect(n).not.toBe(cloneNodes[i]);
});
});
});
describe('RecurseVisitor', () => {
it('should visit all nodes', () => {
const visitor = new RecurseVisitor();
const container = new i18n.Container(
[
new i18n.Text('', null!),
new i18n.Placeholder('', '', null!),
new i18n.IcuPlaceholder(null!, '', null!),
],
null!);
const tag = new i18n.TagPlaceholder('', {}, '', '', [container], false, null!, null, null);
const icu = new i18n.Icu('', '', {tag}, null!);
icu.visit(visitor);
expect(visitor.textCount).toEqual(1);
expect(visitor.phCount).toEqual(1);
expect(visitor.icuPhCount).toEqual(1);
});
});
});
}
class RecurseVisitor extends i18n.RecurseVisitor {
textCount = 0;
phCount = 0;
icuPhCount = 0;
visitText(text: i18n.Text, context?: any): any {
this.textCount++;
}
visitPlaceholder(ph: i18n.Placeholder, context?: any): any {
this.phCount++;
}
visitIcuPlaceholder(ph: i18n.IcuPlaceholder, context?: any): any {
this.icuPhCount++;
}
}