add hw2

node_modules/on-exit-leak-free/test/base.test.js

@@ -0,0 +1,30 @@
+'use strict'
+
+const { test } = require('tap')
+const { fork } = require('child_process')
+const { join } = require('path')
+const { once } = require('events')
+const { register } = require('..')
+
+const files = [
+  'close.js',
+  'beforeExit',
+  'gc-not-close.js',
+  'unregister.js'
+]
+
+for (const file of files) {
+  test(file, async ({ equal }) => {
+    const child = fork(join(__dirname, 'fixtures', file), [], {
+      execArgv: ['--expose-gc']
+    })
+
+    const [code] = await once(child, 'close')
+
+    equal(code, 0)
+  })
+}
+
+test('undefined', async ({ throws }) => {
+  throws(() => register(undefined))
+})