chore(@astrojs/node): use Node.js for testing (#9758)

* chore(@astrojs/node): use Node.js for testing

* revert file

* address feedback

* feedback

* Run tests in a single process (#9823)

* Run tests in a single process

* Make test less flaky

* chore: remove module

---------

Co-authored-by: Bjorn Lu <bjornlu.dev@gmail.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/scripts/cmd/test.js b/scripts/cmd/test.js
index 84f6d9742..4e3b6c6ca 100644
--- a/scripts/cmd/test.js
+++ b/scripts/cmd/test.js
@@ -1,5 +1,8 @@
 import { run } from 'node:test';
 import { spec } from 'node:test/reporters';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import { pathToFileURL } from 'node:url';
 import arg from 'arg';
 import glob from 'tiny-glob';
 
@@ -36,6 +39,20 @@ export default async function test() {
 		process.env.NODE_OPTIONS += ' --test-only';
 	}
 
+	if (!args['--parallel']) {
+		// If not parallel, we create a temporary file that imports all the test files
+		// so that it all runs in a single process.
+		const tempTestFile = path.resolve('./node_modules/.astro/test.mjs');
+		await fs.mkdir(path.dirname(tempTestFile), { recursive: true });
+		await fs.writeFile(
+			tempTestFile,
+			files.map((f) => `import ${JSON.stringify(pathToFileURL(f).toString())};`).join('\n')
+		);
+
+		files.length = 0;
+		files.push(tempTestFile);
+	}
+
 	// https://nodejs.org/api/test.html#runoptions
 	run({
 		files,