Support GitHub Actions (#621)

lib/plugin/github/GitHub.js

@@ -32,6 +32,14 @@ class GitHub extends Release {
 
   async init() {
     await super.init();
+
+    // If we're running on GitHub Actions, we can skip the authentication and
+    // collaborator checks. Ref: https://bit.ly/2vsyRzu
+    if (process.env.GITHUB_ACTION) {
+      this.setContext({ github: { username: process.env.GITHUB_ACTOR } });
+      return;
+    }
+
     if (!(await this.isAuthenticated())) {
       throw new GitHubClientError(
         `Could not authenticate with GitHub using environment variable "${this.options.tokenRef}".`

test/github.js

@@ -137,6 +137,25 @@ test('should throw for non-collaborator', async t => {
   stub.restore();
 });
 
+test('should skip authentication and collaborator checks when running on GitHub Actions', async t => {
+  process.env.GITHUB_ACTION = 'run4';
+
+  const options = { github: { tokenRef, remoteUrl, host } };
+  const github = factory(GitHub, { options });
+  const authStub = sinon.stub(github, 'isAuthenticated');
+  const collaboratorStub = sinon.stub(github, 'isCollaborator');
+
+  await t.notThrowsAsync(github.init());
+
+  t.is(authStub.callCount, 0);
+  t.is(collaboratorStub.callCount, 0);
+
+  authStub.restore();
+  collaboratorStub.restore();
+
+  process.env.GITHUB_ACTION = '';
+});
+
 test('should handle octokit client error (without retries)', async t => {
   const github = factory(GitHub, { options: { github: { tokenRef, remoteUrl, host } } });
   const stub = sinon.stub(github.client.repos, 'createRelease');

test/util/setup.js

@@ -12,4 +12,5 @@ process.env.GITHUB_TOKEN = process.env.GITLAB_TOKEN = 1;
 test.after.always(() => {
   process.env.GITHUB_TOKEN = GITHUB_TOKEN;
   process.env.GITLAB_TOKEN = GITLAB_TOKEN;
+  process.env.GITHUB_ACTION = '';
 });