added tests file

Author: yoshutch

.gitignore

@@ -64,3 +64,5 @@ typings/
 
 # next.js build output
 .next
+
+lib/

__tests__/main.test.ts

@@ -0,0 +1,30 @@
+// TODO make tests
+test('test', () => {
+  expect(true).toEqual(true)
+})
+// import * as process from 'process'
+// import * as cp from 'child_process'
+// import * as path from 'path'
+//
+// test('throws invalid number', async () => {
+//   const input = parseInt('foo', 10)
+//   await expect(wait(input)).rejects.toThrow('milliseconds not a number')
+// })
+//
+// test('wait 500 ms', async () => {
+//   const start = new Date()
+//   await wait(500)
+//   const end = new Date()
+//   var delta = Math.abs(end.getTime() - start.getTime())
+//   expect(delta).toBeGreaterThan(450)
+// })
+//
+// // shows how the runner will run a javascript action with env / stdout protocol
+// test('test runs', () => {
+//   process.env['INPUT_MILLISECONDS'] = '500'
+//   const ip = path.join(__dirname, '..', 'lib', 'main.js')
+//   const options: cp.ExecSyncOptions = {
+//     env: process.env
+//   }
+//   console.log(cp.execSync(`node ${ip}`, options).toString())
+// })