Use real filesystem for unit testing (withastro#12172)

.gitignore

@@ -21,7 +21,8 @@ package-lock.json
 
 packages/astro/src/**/*.prebuilt.ts
 packages/astro/src/**/*.prebuilt-dev.ts
-!packages/astro/vendor/vite/dist
+packages/astro/test/units/_temp-fixtures/*
+!packages/astro/test/units/_temp-fixtures/package.json
 packages/integrations/**/.netlify/
 
 # exclude IntelliJ/WebStorm stuff

biome.jsonc

@@ -6,6 +6,7 @@
 			"**/dist/**",
 			"**/smoke/**",
 			"**/fixtures/**",
+			"**/_temp-fixtures/**",
 			"**/vendor/**",
 			"**/.vercel/**",
 		],

package.json

@@ -87,6 +87,9 @@
       "allowAny": [
         "astro"
       ]
+    },
+    "patchedDependencies": {
+      "[email protected]": "patches/[email protected]"
     }
   }
 }

packages/astro/package.json

@@ -112,14 +112,15 @@
     "build": "pnpm run prebuild && astro-scripts build \"src/**/*.{ts,js}\" --copy-wasm && tsc",
     "build:ci": "pnpm run prebuild && astro-scripts build \"src/**/*.{ts,js}\" --copy-wasm",
     "dev": "astro-scripts dev --copy-wasm --prebuild \"src/runtime/server/astro-island.ts\" --prebuild \"src/runtime/client/{idle,load,media,only,visible}.ts\" \"src/**/*.{ts,js}\"",
-    "test": "pnpm run test:node && pnpm run test:types",
-    "test:match": "pnpm run test:node --match",
+    "test": "pnpm run test:unit && pnpm run test:integration && pnpm run test:types",
+    "test:match": "astro-scripts test \"test/**/*.test.js\" --match",
     "test:e2e": "pnpm test:e2e:chrome && pnpm test:e2e:firefox",
     "test:e2e:match": "playwright test -g",
     "test:e2e:chrome": "playwright test",
     "test:e2e:firefox": "playwright test --config playwright.firefox.config.js",
     "test:types": "tsc --project tsconfig.tests.json",
-    "test:node": "astro-scripts test \"test/**/*.test.js\""
+    "test:unit": "astro-scripts test \"test/units/**/*.test.js\" --teardown ./test/units/teardown.js",
+    "test:integration": "astro-scripts test \"test/*.test.js\""
   },
   "dependencies": {
     "@astrojs/compiler": "^2.10.3",
@@ -210,9 +211,9 @@
     "eol": "^0.10.0",
     "execa": "^8.0.1",
     "expect-type": "^1.1.0",
+    "fs-fixture": "^2.4.0",
     "mdast-util-mdx": "^3.0.0",
     "mdast-util-mdx-jsx": "^3.1.3",
-    "memfs": "^4.14.0",
     "node-mocks-http": "^1.16.1",
     "parse-srcset": "^1.0.2",
     "rehype-autolink-headings": "^7.1.0",

packages/astro/src/vite-plugin-astro-server/plugin.ts

@@ -77,6 +77,9 @@ export default function createVitePluginAstroServer({
 			}
 
 			process.on('unhandledRejection', handleUnhandledRejection);
+			viteServer.httpServer?.on('close', () => {
+				process.off('unhandledRejection', handleUnhandledRejection);
+			});
 
 			return () => {
 				// Push this middleware to the front of the stack so that it can intercept responses.

packages/astro/test/units/_temp-fixtures/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "astro-temp-fixtures",
+  "description": "This directory contains nested directories of dynamically created unit test fixtures. The deps here can be used by them",
+  "dependencies": {
+    "@astrojs/mdx": "workspace:*",
+    "astro": "workspace:*"
+  }
+}

packages/astro/test/units/config/format.test.js

@@ -1,25 +1,19 @@
 import * as assert from 'node:assert/strict';
 import { describe, it } from 'node:test';
-import { fileURLToPath } from 'node:url';
-import { createFs, runInContainer } from '../test-utils.js';
-
-const root = new URL('../../fixtures/tailwindcss-ts/', import.meta.url);
+import { createFixture, runInContainer } from '../test-utils.js';
 
 describe('Astro config formats', () => {
 	it('An mjs config can import TypeScript modules', async () => {
-		const fs = createFs(
-			{
-				'/src/pages/index.astro': ``,
-				'/src/stuff.ts': `export default 'works';`,
-				'/astro.config.mjs': `
+		const fixture = await createFixture({
+			'/src/pages/index.astro': ``,
+			'/src/stuff.ts': `export default 'works';`,
+			'/astro.config.mjs': `\
 					import stuff from './src/stuff.ts';
 					export default {}
 				`,
-			},
-			root,
-		);
+		});
 
-		await runInContainer({ fs, inlineConfig: { root: fileURLToPath(root) } }, () => {
+		await runInContainer({ inlineConfig: { root: fixture.path } }, () => {
 			assert.equal(
 				true,
 				true,

packages/astro/test/units/content-collections/frontmatter.test.js

@@ -1,33 +1,16 @@
-import nodeFS from 'node:fs';
-import path from 'node:path';
 import { describe, it } from 'node:test';
-import { fileURLToPath } from 'node:url';
 import { attachContentServerListeners } from '../../../dist/content/index.js';
-import { createFs, runInContainer, triggerFSEvent } from '../test-utils.js';
-
-const root = new URL('../../fixtures/alias/', import.meta.url);
-
-function getTypesDts() {
-	const typesdtsURL = new URL('../../../templates/content/types.d.ts', import.meta.url);
-	const relpath = path
-		.relative(fileURLToPath(root), fileURLToPath(typesdtsURL))
-		.replace(/\\/g, '/');
-	return {
-		[relpath]: nodeFS.readFileSync(typesdtsURL, 'utf-8'),
-	};
-}
+import { createFixture, runInContainer } from '../test-utils.js';
 
 describe('frontmatter', () => {
 	it('errors in content/ does not crash server', async () => {
-		const fs = createFs(
-			{
-				...getTypesDts(),
-				'/src/content/posts/blog.md': `
+		const fixture = await createFixture({
+			'/src/content/posts/blog.md': `\
 					---
 					title: One
 					---
 				`,
-				'/src/content/config.ts': `
+			'/src/content/config.ts': `\
 					import { defineCollection, z } from 'astro:content';
 
 					const posts = defineCollection({
@@ -38,7 +21,7 @@ describe('frontmatter', () => {
 						posts
 					};
 				`,
-				'/src/pages/index.astro': `
+			'/src/pages/index.astro': `\
 					---
 					---
 					<html>
@@ -48,14 +31,12 @@ describe('frontmatter', () => {
 						</body>
 					</html>
 				`,
-			},
-			root,
-		);
+		});
 
-		await runInContainer({ fs, inlineConfig: { root: fileURLToPath(root) } }, async (container) => {
+		await runInContainer({ inlineConfig: { root: fixture.path } }, async (container) => {
 			await attachContentServerListeners(container);
 
-			fs.writeFileFromRootSync(
+			await fixture.writeFile(
 				'/src/content/posts/blog.md',
 				`
 				---
@@ -64,7 +45,6 @@ describe('frontmatter', () => {
 				---
 				`,
 			);
-			triggerFSEvent(container, fs, '/src/content/posts/blog.md', 'change');
 			await new Promise((resolve) => setTimeout(resolve, 100));
 			// Note, if we got here, it didn't crash
 		});