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angular-cn/modules/@angular/compiler/test/i18n/extractor_merger_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 {describe, expect, it} from '@angular/core/testing/testing_internal';
import {digestMessage, serializeNodes as serializeI18nNodes} from '../../src/i18n/digest';
import {extractMessages, mergeTranslations} from '../../src/i18n/extractor_merger';
import * as i18n from '../../src/i18n/i18n_ast';
import {TranslationBundle} from '../../src/i18n/translation_bundle';
import * as html from '../../src/ml_parser/ast';
import {HtmlParser} from '../../src/ml_parser/html_parser';
import {DEFAULT_INTERPOLATION_CONFIG} from '../../src/ml_parser/interpolation_config';
import {serializeNodes as serializeHtmlNodes} from '../ml_parser/ast_serializer_spec';
export function main() {
describe('Extractor', () => {
describe('elements', () => {
it('should extract from elements', () => {
expect(extract('<div i18n="m|d|e">text<span>nested</span></div>')).toEqual([
[['text', '<ph tag name="START_TAG_SPAN">nested</ph name="CLOSE_TAG_SPAN">'], 'm', 'd|e'],
]);
});
it('should extract from attributes', () => {
expect(
extract(
'<div i18n="m1|d1"><span i18n-title="m2|d2" title="single child">nested</span></div>'))
.toEqual([
[['<ph tag name="START_TAG_SPAN">nested</ph name="CLOSE_TAG_SPAN">'], 'm1', 'd1'],
[['single child'], 'm2', 'd2'],
]);
});
it('should extract from ICU messages', () => {
expect(
extract(
'<div i18n="m|d">{count, plural, =0 { <p i18n-title i18n-desc title="title" desc="desc"></p>}}</div>'))
.toEqual([
[
[
'{count, plural, =0 {[<ph tag name="START_PARAGRAPH"></ph name="CLOSE_PARAGRAPH">]}}'
],
'm', 'd'
],
[['title'], '', ''],
[['desc'], '', ''],
]);
});
it('should not create a message for empty elements',
() => { expect(extract('<div i18n="m|d"></div>')).toEqual([]); });
it('should ignore implicit elements in translatable elements', () => {
expect(extract('<div i18n="m|d"><p></p></div>', ['p'])).toEqual([
[['<ph tag name="START_PARAGRAPH"></ph name="CLOSE_PARAGRAPH">'], 'm', 'd']
]);
});
});
describe('blocks', () => {
it('should extract from blocks', () => {
expect(extract(`<!-- i18n: meaning1|desc1 -->message1<!-- /i18n -->
<!-- i18n: desc2 -->message2<!-- /i18n -->
<!-- i18n -->message3<!-- /i18n -->`))
.toEqual([
[['message1'], 'meaning1', 'desc1'],
[['message2'], '', 'desc2'],
[['message3'], '', ''],
]);
});
it('should ignore implicit elements in blocks', () => {
expect(extract('<!-- i18n:m|d --><p></p><!-- /i18n -->', ['p'])).toEqual([
[['<ph tag name="START_PARAGRAPH"></ph name="CLOSE_PARAGRAPH">'], 'm', 'd']
]);
});
it('should extract siblings', () => {
expect(
extract(
`<!-- i18n -->text<p>html<b>nested</b></p>{count, plural, =0 {<span>html</span>}}{{interp}}<!-- /i18n -->`))
.toEqual([
[
[
'{count, plural, =0 {[<ph tag name="START_TAG_SPAN">html</ph name="CLOSE_TAG_SPAN">]}}'
],
'', ''
],
[
[
'text',
'<ph tag name="START_PARAGRAPH">html, <ph tag name="START_BOLD_TEXT">nested</ph name="CLOSE_BOLD_TEXT"></ph name="CLOSE_PARAGRAPH">',
'<ph icu name="ICU">{count, plural, =0 {[<ph tag name="START_TAG_SPAN">html</ph name="CLOSE_TAG_SPAN">]}}</ph>',
'[<ph name="INTERPOLATION">interp</ph>]'
],
'', ''
],
]);
});
it('should ignore other comments', () => {
expect(extract(`<!-- i18n: meaning1|desc1 --><!-- other -->message1<!-- /i18n -->`))
.toEqual([
[['message1'], 'meaning1', 'desc1'],
]);
});
it('should not create a message for empty blocks',
() => { expect(extract(`<!-- i18n: meaning1|desc1 --><!-- /i18n -->`)).toEqual([]); });
});
describe('ICU messages', () => {
it('should extract ICU messages from translatable elements', () => {
// single message when ICU is the only children
expect(extract('<div i18n="m|d">{count, plural, =0 {text}}</div>')).toEqual([
[['{count, plural, =0 {[text]}}'], 'm', 'd'],
]);
// single message when ICU is the only (implicit) children
expect(extract('<div>{count, plural, =0 {text}}</div>', ['div'])).toEqual([
[['{count, plural, =0 {[text]}}'], '', ''],
]);
// one message for the element content and one message for the ICU
expect(extract('<div i18n="m|d">before{count, plural, =0 {text}}after</div>')).toEqual([
[['before', '<ph icu name="ICU">{count, plural, =0 {[text]}}</ph>', 'after'], 'm', 'd'],
[['{count, plural, =0 {[text]}}'], '', ''],
]);
});
it('should extract ICU messages from translatable block', () => {
// single message when ICU is the only children
expect(extract('<!-- i18n:m|d -->{count, plural, =0 {text}}<!-- /i18n -->')).toEqual([
[['{count, plural, =0 {[text]}}'], 'm', 'd'],
]);
// one message for the block content and one message for the ICU
expect(extract('<!-- i18n:m|d -->before{count, plural, =0 {text}}after<!-- /i18n -->'))
.toEqual([
[['{count, plural, =0 {[text]}}'], '', ''],
[
['before', '<ph icu name="ICU">{count, plural, =0 {[text]}}</ph>', 'after'], 'm',
'd'
],
]);
});
it('should not extract ICU messages outside of i18n sections',
() => { expect(extract('{count, plural, =0 {text}}')).toEqual([]); });
it('should ignore nested ICU messages', () => {
expect(extract('<div i18n="m|d">{count, plural, =0 { {sex, gender, =m {m}} }}</div>'))
.toEqual([
[['{count, plural, =0 {[{sex, gender, =m {[m]}}, ]}}'], 'm', 'd'],
]);
});
it('should ignore implicit elements in non translatable ICU messages', () => {
expect(
extract(
'<div i18n="m|d">{count, plural, =0 { {sex, gender, =m {<p>ignore</p>}} }}</div>',
['p']))
.toEqual([[
[
'{count, plural, =0 {[{sex, gender, =m {[<ph tag name="START_PARAGRAPH">ignore</ph name="CLOSE_PARAGRAPH">]}}, ]}}'
],
'm', 'd'
]]);
});
it('should ignore implicit elements in non translatable ICU messages', () => {
expect(extract('{count, plural, =0 { {sex, gender, =m {<p>ignore</p>}} }}', ['p']))
.toEqual([]);
});
});
describe('attributes', () => {
it('should extract from attributes outside of translatable sections', () => {
expect(extract('<div i18n-title="m|d" title="msg"></div>')).toEqual([
[['msg'], 'm', 'd'],
]);
});
it('should extract from attributes in translatable elements', () => {
expect(extract('<div i18n><p><b i18n-title="m|d" title="msg"></b></p></div>')).toEqual([
[
[
'<ph tag name="START_PARAGRAPH"><ph tag name="START_BOLD_TEXT"></ph name="CLOSE_BOLD_TEXT"></ph name="CLOSE_PARAGRAPH">'
],
'', ''
],
[['msg'], 'm', 'd'],
]);
});
it('should extract from attributes in translatable blocks', () => {
expect(extract('<!-- i18n --><p><b i18n-title="m|d" title="msg"></b></p><!-- /i18n -->'))
.toEqual([
[['msg'], 'm', 'd'],
[
[
'<ph tag name="START_PARAGRAPH"><ph tag name="START_BOLD_TEXT"></ph name="CLOSE_BOLD_TEXT"></ph name="CLOSE_PARAGRAPH">'
],
'', ''
],
]);
});
it('should extract from attributes in translatable ICUs', () => {
expect(
extract(
'<!-- i18n -->{count, plural, =0 {<p><b i18n-title="m|d" title="msg"></b></p>}}<!-- /i18n -->'))
.toEqual([
[['msg'], 'm', 'd'],
[
[
'{count, plural, =0 {[<ph tag name="START_PARAGRAPH"><ph tag name="START_BOLD_TEXT"></ph name="CLOSE_BOLD_TEXT"></ph name="CLOSE_PARAGRAPH">]}}'
],
'', ''
],
]);
});
it('should extract from attributes in non translatable ICUs', () => {
expect(extract('{count, plural, =0 {<p><b i18n-title="m|d" title="msg"></b></p>}}'))
.toEqual([
[['msg'], 'm', 'd'],
]);
});
it('should not create a message for empty attributes',
() => { expect(extract('<div i18n-title="m|d" title></div>')).toEqual([]); });
});
describe('implicit elements', () => {
it('should extract from implicit elements', () => {
expect(extract('<b>bold</b><i>italic</i>', ['b'])).toEqual([
[['bold'], '', ''],
]);
});
it('should allow nested implicit elements', () => {
let result: any[];
expect(() => {
result = extract('<div>outer<div>inner</div></div>', ['div']);
}).not.toThrow();
expect(result).toEqual([
[['outer', '<ph tag name="START_TAG_DIV">inner</ph name="CLOSE_TAG_DIV">'], '', ''],
]);
});
});
describe('implicit attributes', () => {
it('should extract implicit attributes', () => {
expect(extract('<b title="bb">bold</b><i title="ii">italic</i>', [], {'b': ['title']}))
.toEqual([
[['bb'], '', ''],
]);
});
});
describe('errors', () => {
describe('elements', () => {
it('should report nested translatable elements', () => {
expect(extractErrors(`<p i18n><b i18n></b></p>`)).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
]);
});
it('should report translatable elements in implicit elements', () => {
expect(extractErrors(`<p><b i18n></b></p>`, ['p'])).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
]);
});
it('should report translatable elements in translatable blocks', () => {
expect(extractErrors(`<!-- i18n --><b i18n></b><!-- /i18n -->`)).toEqual([
['Could not mark an element as translatable inside a translatable section', '<b i18n>'],
]);
});
});
describe('blocks', () => {
it('should report nested blocks', () => {
expect(extractErrors(`<!-- i18n --><!-- i18n --><!-- /i18n --><!-- /i18n -->`)).toEqual([
['Could not start a block inside a translatable section', '<!--'],
['Trying to close an unopened block', '<!--'],
]);
});
it('should report unclosed blocks', () => {
expect(extractErrors(`<!-- i18n -->`)).toEqual([
['Unclosed block', '<!--'],
]);
});
it('should report translatable blocks in translatable elements', () => {
expect(extractErrors(`<p i18n><!-- i18n --><!-- /i18n --></p>`)).toEqual([
['Could not start a block inside a translatable section', '<!--'],
['Trying to close an unopened block', '<!--'],
]);
});
it('should report translatable blocks in implicit elements', () => {
expect(extractErrors(`<p><!-- i18n --><!-- /i18n --></p>`, ['p'])).toEqual([
['Could not start a block inside a translatable section', '<!--'],
['Trying to close an unopened block', '<!--'],
]);
});
it('should report when start and end of a block are not at the same level', () => {
expect(extractErrors(`<!-- i18n --><p><!-- /i18n --></p>`)).toEqual([
['I18N blocks should not cross element boundaries', '<!--'],
['Unclosed block', '<p>'],
]);
expect(extractErrors(`<p><!-- i18n --></p><!-- /i18n -->`)).toEqual([
['I18N blocks should not cross element boundaries', '<!--'],
['Unclosed block', '<!--'],
]);
});
});
});
});
describe('Merger', () => {
describe('elements', () => {
it('should merge elements', () => {
const HTML = `<p i18n="m|d">foo</p>`;
expect(fakeTranslate(HTML)).toEqual('<p>**foo**</p>');
});
it('should merge nested elements', () => {
const HTML = `<div>before<p i18n="m|d">foo</p><!-- comment --></div>`;
expect(fakeTranslate(HTML)).toEqual('<div>before<p>**foo**</p></div>');
});
});
describe('blocks', () => {
it('should merge blocks', () => {
const HTML = `before<!-- i18n --><p>foo</p><span><i>bar</i></span><!-- /i18n -->after`;
expect(fakeTranslate(HTML))
.toEqual(
'before**<ph tag name="START_PARAGRAPH">foo</ph name="CLOSE_PARAGRAPH"><ph tag name="START_TAG_SPAN"><ph tag name="START_ITALIC_TEXT">bar</ph name="CLOSE_ITALIC_TEXT"></ph name="CLOSE_TAG_SPAN">**after');
});
it('should merge nested blocks', () => {
const HTML =
`<div>before<!-- i18n --><p>foo</p><span><i>bar</i></span><!-- /i18n -->after</div>`;
expect(fakeTranslate(HTML))
.toEqual(
'<div>before**<ph tag name="START_PARAGRAPH">foo</ph name="CLOSE_PARAGRAPH"><ph tag name="START_TAG_SPAN"><ph tag name="START_ITALIC_TEXT">bar</ph name="CLOSE_ITALIC_TEXT"></ph name="CLOSE_TAG_SPAN">**after</div>');
});
});
describe('attributes', () => {
it('should merge attributes', () => {
const HTML = `<p i18n-title="m|d" title="foo"></p>`;
expect(fakeTranslate(HTML)).toEqual('<p title="**foo**"></p>');
});
it('should merge nested attributes', () => {
const HTML = `<div>{count, plural, =0 {<p i18n-title title="foo"></p>}}</div>`;
expect(fakeTranslate(HTML))
.toEqual('<div>{count, plural, =0 {<p title="**foo**"></p>}}</div>');
});
it('should merge attributes without values', () => {
const HTML = `<p i18n-title="m|d" title=""></p>`;
expect(fakeTranslate(HTML)).toEqual('<p title=""></p>');
});
});
});
}
function parseHtml(html: string): html.Node[] {
const htmlParser = new HtmlParser();
const parseResult = htmlParser.parse(html, 'extractor spec', true);
if (parseResult.errors.length > 1) {
throw new Error(`unexpected parse errors: ${parseResult.errors.join('\n')}`);
}
return parseResult.rootNodes;
}
function fakeTranslate(
content: string, implicitTags: string[] = [],
implicitAttrs: {[k: string]: string[]} = {}): string {
const htmlNodes: html.Node[] = parseHtml(content);
const messages: i18n.Message[] =
extractMessages(htmlNodes, DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs)
.messages;
const i18nMsgMap: {[id: string]: html.Node[]} = {};
messages.forEach(message => {
const id = digestMessage(message);
const text = serializeI18nNodes(message.nodes).join('');
i18nMsgMap[id] = [new html.Text(`**${text}**`, null)];
});
const translations = new TranslationBundle(i18nMsgMap);
const translatedNodes =
mergeTranslations(
htmlNodes, translations, DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs)
.rootNodes;
return serializeHtmlNodes(translatedNodes).join('');
}
function extract(
html: string, implicitTags: string[] = [],
implicitAttrs: {[k: string]: string[]} = {}): [string[], string, string][] {
const result =
extractMessages(parseHtml(html), DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs);
if (result.errors.length > 0) {
throw new Error(`unexpected errors: ${result.errors.join('\n')}`);
}
// clang-format off
// https://github.com/angular/clang-format/issues/35
return result.messages.map(
message => [serializeI18nNodes(message.nodes), message.meaning, message.description, ]) as [string[], string, string][];
// clang-format on
}
function extractErrors(
html: string, implicitTags: string[] = [], implicitAttrs: {[k: string]: string[]} = {}): any[] {
const errors =
extractMessages(parseHtml(html), DEFAULT_INTERPOLATION_CONFIG, implicitTags, implicitAttrs)
.errors;
return errors.map((e): [string, string] => [e.msg, e.span.toString()]);
}
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