Fix tests

Author: AlphaHydrae

index2.js

@@ -3,4 +3,4 @@ const { doNotCloseOnExit, execvp } = require('./index.js')
 doNotCloseOnExit(process.stdin.fd)
 doNotCloseOnExit(process.stdout.fd)
 doNotCloseOnExit(process.stderr.fd)
-execvp('ls', ['.'])
+execvp('ls', [process.argv0, 'tests'])

tests/index.spec.js

@@ -2,6 +2,6 @@ const { execSync } = require('node:child_process')
 
 describe('exec', () => {
   test('it should work', () => {
-    expect(execSync('node index2.js').toString()).toBe('Hello\n')
+    expect(execSync('node index2.js').toString()).toBe('index.spec.js\n')
   })
 })