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test(vscode): add test for embedded grammars (#5861)
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‎.gitignore‎

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@@ -4,6 +4,7 @@ node_modules
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*.vsix
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extensions/vscode/out
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extensions/vscode/tests/embeddedGrammars/*.tmLanguage.json
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packages/*/*.d.ts
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packages/*/*.js
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packages/*/*.map

‎extensions/vscode/scripts/grammars-sync.ts‎

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import { createHash } from 'node:crypto';
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import * as fs from 'node:fs';
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import { mkdir, readFile, writeFile } from 'node:fs/promises';
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import * as path from 'node:path';
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import { fileURLToPath } from 'node:url';
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interface LockItem {
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file: string;
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url: string;
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checksum?: string;
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}
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const CHECKSUM_PREFIX = 'sha256-';
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function computeChecksum(content: string | Buffer): string {
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const buffer = typeof content === 'string' ? Buffer.from(content) : content;
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return CHECKSUM_PREFIX + createHash('sha256').update(buffer).digest('hex');
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}
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async function fetchWithChecksum(url: string) {
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console.log(`Downloading ${url}...`);
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const res = await fetch(url);
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if (!res.ok) {
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throw new Error(`Failed to download ${url}: ${res.status} ${res.statusText}`);
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}
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const content = await res.text();
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return { content, checksum: computeChecksum(content) };
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}
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async function fileChecksum(filePath: string): Promise<string | null> {
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if (!fs.existsSync(filePath)) {
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return null;
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}
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const content = await readFile(filePath);
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return computeChecksum(content);
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}
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async function safeWriteFile(filePath: string, content: string | Buffer) {
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await mkdir(path.dirname(filePath), { recursive: true });
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await writeFile(filePath, content);
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}
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async function processItem(dirPath: string, item: LockItem, update: boolean): Promise<boolean> {
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if (!item.file || !item.url) {
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throw new Error('Lock item must include "file" and "url".');
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}
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const filePath = path.resolve(dirPath, item.file);
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if (update || !item.checksum) {
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const { content, checksum } = await fetchWithChecksum(item.url);
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await safeWriteFile(filePath, content);
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const changed = item.checksum !== checksum;
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item.checksum = checksum;
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return changed || update;
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}
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const expected = item.checksum;
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const localChecksum = await fileChecksum(filePath);
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if (localChecksum === expected) {
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return false;
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}
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const { content, checksum } = await fetchWithChecksum(item.url);
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if (checksum !== expected) {
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throw new Error(
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`Checksum mismatch for ${item.file}. Expected ${expected}, got ${checksum}.
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Please run "pnpm test:prepare -u" to update the lock hash.`,
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);
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}
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if (checksum !== localChecksum) {
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await safeWriteFile(filePath, content);
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}
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return false;
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}
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const dir = path.dirname(fileURLToPath(import.meta.url));
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const dirPath = path.resolve(dir, '../tests/embeddedGrammars');
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const lockPath = path.resolve(dirPath, '_lock.json');
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const update = !fs.existsSync(lockPath);
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const lock: LockItem[] = update
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? [
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{
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'file': 'css.tmLanguage.json',
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'url': 'https://raw.githubusercontent.com/microsoft/vscode/main/extensions/css/syntaxes/css.tmLanguage.json',
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},
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{
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'file': 'html.tmLanguage.json',
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'url': 'https://raw.githubusercontent.com/microsoft/vscode/main/extensions/html/syntaxes/html.tmLanguage.json',
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},
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{
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'file': 'javascript.tmLanguage.json',
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'url':
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'https://raw.githubusercontent.com/microsoft/vscode/main/extensions/javascript/syntaxes/JavaScript.tmLanguage.json',
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},
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{
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'file': 'scss.tmLanguage.json',
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'url': 'https://raw.githubusercontent.com/microsoft/vscode/main/extensions/scss/syntaxes/scss.tmLanguage.json',
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},
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{
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'file': 'typescript.tmLanguage.json',
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'url':
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'https://raw.githubusercontent.com/microsoft/vscode/main/extensions/typescript-basics/syntaxes/TypeScript.tmLanguage.json',
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},
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]
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: JSON.parse(await readFile(lockPath, 'utf8'));
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if (!Array.isArray(lock)) {
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throw new Error('_lock.json must contain an array of lock items.');
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}
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await Promise.all(lock.map(item => processItem(dirPath, item, update)));
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await mkdir(dirPath, { recursive: true });
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await writeFile(lockPath, JSON.stringify(lock, null, '\t') + '\n', 'utf8');

‎extensions/vscode/tests/__snapshots__/grammar.spec.ts.snap‎

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‎extensions/vscode/tests/embeddedGrammarFixtures/#2060-ts-type-semicolon.vue‎

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<script setup lang="ts">
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type a = 1;
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</script>
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<script setup lang="ts">
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type a = 1
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</script>

‎extensions/vscode/tests/embeddedGrammarFixtures/#3999-multi-line-setup.vue‎

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<script
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setup
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>
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const a = 0;
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</script>
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<script
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setup
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lang="ts"
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>
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type a = 0;
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</script>
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<style
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scoped
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>
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:root {
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color: red;
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}
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</style>
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<style
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scoped
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lang="scss"
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>
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$color: red;
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</style>

extensions/vscode/tests/grammarFixtures/leading-operator.vue renamed to extensions/vscode/tests/embeddedGrammarFixtures/#4741-leading-operator.vue

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@@ -2,18 +2,12 @@
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if (false
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< true
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) { }
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(
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<br />
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);
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</script>
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<script lang="js">
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if (false
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< true
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) {}
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(
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<br />
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);
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</script>
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<script lang="jsx">

‎extensions/vscode/tests/embeddedGrammarFixtures/basic.vue‎

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<script setup>
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const a = 0;
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</script>
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<script setup lang="ts">
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type a = 0;
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</script>
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<template>
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<div />
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</template>
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<style scoped>
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:root {
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color: red;
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}
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</style>
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<style scoped lang="scss">
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$color: red;
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</style>

‎extensions/vscode/tests/embeddedGrammarFixtures/single-line-setup.vue‎

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<script setup lang="ts">const a = 1;</script>

‎extensions/vscode/tests/embeddedGrammars/_lock.json‎

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[
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{
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"file": "css.tmLanguage.json",
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"url": "https://raw.githubusercontent.com/microsoft/vscode/main/extensions/css/syntaxes/css.tmLanguage.json",
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"checksum": "sha256-bcc97d1a3a6bf112f72d8bdb58bc438eb68aa0e070b94d00c6064b75f5cab69b"
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},
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{
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"file": "html.tmLanguage.json",
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"url": "https://raw.githubusercontent.com/microsoft/vscode/main/extensions/html/syntaxes/html.tmLanguage.json",
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"checksum": "sha256-80dedf4fb27e88889ac8fb72763954a6d2660502c686f4415208d8c8d00352cd"
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},
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{
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"file": "javascript.tmLanguage.json",
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"url": "https://raw.githubusercontent.com/microsoft/vscode/main/extensions/javascript/syntaxes/JavaScript.tmLanguage.json",
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"checksum": "sha256-db6f17f15bc4f5e860a3b8fa6055a69720a53df845c8d5121cdc4f128c16291f"
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},
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{
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"file": "scss.tmLanguage.json",
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"url": "https://raw.githubusercontent.com/microsoft/vscode/main/extensions/scss/syntaxes/scss.tmLanguage.json",
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"checksum": "sha256-8f2824a80a7c6fd558fc538ec52d0a7a42a4d7ecb7ddf20d79f0d1f00fa6602b"
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},
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{
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"file": "typescript.tmLanguage.json",
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"url": "https://raw.githubusercontent.com/microsoft/vscode/main/extensions/typescript-basics/syntaxes/TypeScript.tmLanguage.json",
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"checksum": "sha256-4e92e0d7de560217d6c8d3236d85e6e17a5d77825b15729a230c761743122661"
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}
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]

‎extensions/vscode/tests/grammar.spec.ts‎

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import { describe, expect, it } from 'vitest';
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import { createGrammarSnapshot } from 'vscode-tmlanguage-snapshot';
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const grammarsSync = import('../scripts/grammars-sync');
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const fixturesDir = path.resolve(__dirname, './grammarFixtures');
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const embeddedFixturesDir = path.resolve(__dirname, './embeddedGrammarFixtures');
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const packageJsonPath = path.resolve(__dirname, '../package.json');
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describe('grammar', async () => {
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await grammarsSync;
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const snapshot = await createGrammarSnapshot(packageJsonPath);
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const fixtures = fs.readdirSync(fixturesDir);
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@@ -18,3 +21,26 @@ describe('grammar', async () => {
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});
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}
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});
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describe('embedded grammar', async () => {
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await grammarsSync;
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const embeddedGrammarsDir = path.resolve(__dirname, './embeddedGrammars');
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const snapshot = await createGrammarSnapshot(packageJsonPath, {
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extraGrammarPaths: [
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path.resolve(embeddedGrammarsDir, './typescript.tmLanguage.json'),
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path.resolve(embeddedGrammarsDir, './javascript.tmLanguage.json'),
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path.resolve(embeddedGrammarsDir, './css.tmLanguage.json'),
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path.resolve(embeddedGrammarsDir, './scss.tmLanguage.json'),
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path.resolve(embeddedGrammarsDir, './html.tmLanguage.json'),
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],
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});
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const fixtures = fs.readdirSync(embeddedFixturesDir);
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for (const fixture of fixtures) {
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it(fixture, async () => {
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const result = await snapshot(`tests/embeddedGrammarFixtures/${fixture}`);
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expect(result).toMatchSnapshot();
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});
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}
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});

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