updated

test/exec.test.js

@@ -0,0 +1,34 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { run, ProcessError, ProcessTimeoutError } from '../src/exec.js';
+
+test('resolves with stdout on success', async () => {
+  const { stdout } = await run('node', ['-e', 'process.stdout.write("hi")']);
+  assert.equal(stdout, 'hi');
+});
+
+test('rejects with ProcessError on non-zero exit, capturing stderr', async () => {
+  await assert.rejects(
+    run('node', ['-e', 'process.stderr.write("bad"); process.exit(2)']),
+    (err) => {
+      assert.ok(err instanceof ProcessError);
+      assert.equal(err.code, 2);
+      assert.equal(err.stderr, 'bad');
+      return true;
+    },
+  );
+});
+
+test('rejects with ProcessTimeoutError when the process exceeds the timeout', async () => {
+  await assert.rejects(
+    run('node', ['-e', 'setTimeout(() => {}, 5000)'], { timeoutMs: 100 }),
+    ProcessTimeoutError,
+  );
+});
+
+test('passes cwd and env through to the child process', async () => {
+  const { stdout } = await run('node', ['-e', 'process.stdout.write(process.env.FOO || "")'], {
+    env: { ...process.env, FOO: 'bar' },
+  });
+  assert.equal(stdout, 'bar');
+});