angular-cn/modules/@angular/compiler/test/expander_spec.ts

109 lines
3.9 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 {ddescribe, describe, expect, iit, it} from '../../core/testing/testing_internal';
import {ExpansionResult, expandNodes} from '../src/expander';
import {HtmlAttrAst, HtmlElementAst, HtmlTextAst} from '../src/html_ast';
import {HtmlParser} from '../src/html_parser';
import {ParseError} from '../src/parse_util';
import {humanizeNodes} from './html_ast_spec_utils';
export function main() {
describe('Expander', () => {
function expand(template: string): ExpansionResult {
const htmlParser = new HtmlParser();
const res = htmlParser.parse(template, 'url', true);
return expandNodes(res.rootNodes);
}
it('should handle the plural expansion form', () => {
const res = expand(`{messages.length, plural,=0 {zero<b>bold</b>}}`);
expect(humanizeNodes(res.nodes)).toEqual([
[HtmlElementAst, 'ng-container', 0],
[HtmlAttrAst, '[ngPlural]', 'messages.length'],
[HtmlElementAst, 'template', 1],
[HtmlAttrAst, 'ngPluralCase', '=0'],
[HtmlTextAst, 'zero', 2],
[HtmlElementAst, 'b', 2],
[HtmlTextAst, 'bold', 3],
]);
});
it('should handle nested expansion forms', () => {
const res = expand(`{messages.length, plural, =0 { {p.gender, gender, =m {m}} }}`);
expect(humanizeNodes(res.nodes)).toEqual([
[HtmlElementAst, 'ng-container', 0],
[HtmlAttrAst, '[ngPlural]', 'messages.length'],
[HtmlElementAst, 'template', 1],
[HtmlAttrAst, 'ngPluralCase', '=0'],
[HtmlElementAst, 'ng-container', 2],
[HtmlAttrAst, '[ngSwitch]', 'p.gender'],
[HtmlElementAst, 'template', 3],
[HtmlAttrAst, 'ngSwitchCase', '=m'],
[HtmlTextAst, 'm', 4],
[HtmlTextAst, ' ', 2],
]);
});
it('should correctly set source code positions', () => {
const nodes = expand(`{messages.length, plural,=0 {<b>bold</b>}}`).nodes;
const container: HtmlElementAst = <HtmlElementAst>nodes[0];
expect(container.sourceSpan.start.col).toEqual(0);
expect(container.sourceSpan.end.col).toEqual(42);
expect(container.startSourceSpan.start.col).toEqual(0);
expect(container.startSourceSpan.end.col).toEqual(42);
expect(container.endSourceSpan.start.col).toEqual(0);
expect(container.endSourceSpan.end.col).toEqual(42);
const switchExp = container.attrs[0];
expect(switchExp.sourceSpan.start.col).toEqual(1);
expect(switchExp.sourceSpan.end.col).toEqual(16);
const template: HtmlElementAst = <HtmlElementAst>container.children[0];
expect(template.sourceSpan.start.col).toEqual(25);
expect(template.sourceSpan.end.col).toEqual(41);
const switchCheck = template.attrs[0];
expect(switchCheck.sourceSpan.start.col).toEqual(25);
expect(switchCheck.sourceSpan.end.col).toEqual(28);
const b: HtmlElementAst = <HtmlElementAst>template.children[0];
expect(b.sourceSpan.start.col).toEqual(29);
expect(b.endSourceSpan.end.col).toEqual(40);
});
it('should handle other special forms', () => {
const res = expand(`{person.gender, gender,=male {m}}`);
expect(humanizeNodes(res.nodes)).toEqual([
[HtmlElementAst, 'ng-container', 0],
[HtmlAttrAst, '[ngSwitch]', 'person.gender'],
[HtmlElementAst, 'template', 1],
[HtmlAttrAst, 'ngSwitchCase', '=male'],
[HtmlTextAst, 'm', 2],
]);
});
describe('errors', () => {
it('should error on unknown plural cases', () => {
expect(humanizeErrors(expand('{n, plural, unknown {-}}').errors)).toEqual([
`Plural cases should be "=<number>" or one of zero, one, two, few, many, other`,
]);
});
});
});
}
function humanizeErrors(errors: ParseError[]): string[] {
return errors.map(error => error.msg);
}