fix: make sure action passes when event doesn't have commits fixes #746

src/action.js

@@ -31,10 +31,7 @@ const getPushEventCommits = () => {
   return mappedCommits
 }
 
-const getEventCommits = async () => {
+const getPullRequestEventCommits = async () => {
-  if (!pullRequestEvents.includes(GITHUB_EVENT_NAME))
-    return getPushEventCommits()
-
   const octokit = getOctokit(getInput('token'))
   const { owner, repo, number } = eventContext.issue
   const { data: commits } = await octokit.rest.pulls.listCommits({
@@ -50,6 +47,16 @@ const getEventCommits = async () => {
   }))
 }
 
+const getEventCommits = async () => {
+  if (pullRequestEvents.includes(GITHUB_EVENT_NAME)) {
+    return getPullRequestEventCommits()
+  }
+  if (eventContext.payload.commits) {
+    return getPushEventCommits()
+  }
+  return []
+}
+
 function getOptsFromConfig(config) {
   return {
     parserOpts:

src/action.test.js

@@ -281,6 +281,20 @@ describe('Commit Linter action', () => {
     )
   })
 
+  it('should pass when commits are not available', async () => {
+    td.when(core.getInput('configFile')).thenReturn('./commitlint.config.js')
+    cwd = await git.bootstrap('fixtures/conventional')
+    await createPushEventPayload(cwd, {})
+    updatePushEnvVars(cwd)
+    td.replace(process, 'cwd', () => cwd)
+    td.replace(console, 'log')
+
+    await runAction()
+
+    td.verify(core.setFailed(), { times: 0, ignoreExtraArgs: true })
+    td.verify(console.log('Lint free! 🎉'))
+  })
+
   describe.each(['pull_request', 'pull_request_target'])(
     'when there are multiple commits failing in the %s event',
     (eventName) => {