Add authorized user file

Author: ncalteen

README.md

@@ -6,3 +6,8 @@ deliveries.
 
 To get started, submit an issue using
 [this template](https://github.com/githubschool/gh-github-intermediate-issueops/issues/new?template=create-class.yml)
+
+In order to use this repository, you will need to be added to the authorized
+users file [here](./instructors.yml). If you are not added to this file, you
+will not be able to use the automation in this repository. To add yourself,
+submit a pull request to this file with your GitHub handle.

__fixtures__/github.ts

@@ -3,6 +3,7 @@ import * as octokit from './octokit.js'
 export const getOctokit = () => octokit
 
 export const context = {
+  actor: 'test',
   eventName: 'issues',
   payload: {
     action: 'opened',

__tests__/main.test.ts

@@ -1,5 +1,7 @@
 import { jest } from '@jest/globals'
+import { dedent } from 'ts-dedent'
 import * as core from '../__fixtures__/core.js'
+import * as fs from '../__fixtures__/fs.js'
 import * as github from '../__fixtures__/github.js'
 import * as octokit from '../__fixtures__/octokit.js'
 import { AllowedIssueAction, AllowedIssueCommentAction } from '../src/enums.js'
@@ -17,6 +19,7 @@ jest.unstable_mockModule('@octokit/rest', async () => {
     Octokit
   }
 })
+jest.unstable_mockModule('fs', () => fs)
 
 const events_getAction: jest.SpiedFunction<
   typeof import('../src/events.js').getAction
@@ -74,6 +77,14 @@ const { Octokit } = await import('@octokit/rest')
 const mocktokit = jest.mocked(new Octokit())
 
 describe('main', () => {
+  beforeEach(() => {
+    process.env.GITHUB_WORKSPACE = '.'
+
+    fs.readFileSync.mockReturnValue(dedent`instructors:
+
+    - test`)
+  })
+
   afterEach(() => {
     jest.resetAllMocks()
   })