test: migrate to Jest

Author: z0al

lib/format.js

@@ -3,9 +3,7 @@
  *
  * @param {Object} report
  */
-const format = report => {
-	const { commits } = report
-
+function format({ commits }) {
 	// Keep errors/warnings count
 	let errorsCount = 0
 	let warnsCount = 0
@@ -34,11 +32,19 @@ There were the following issues with this Pull Request
 
 ${message}
 
-You may need to [change the commit messages](https://help.github.com/articles/changing-a-commit-message/) to comply with the repository contributing guidelines.
+You may need to [change the commit messages][ref] to comply with the \
+repository contributing guidelines.
 
 --------
 
-🤖 This comment was generated by [**commitlint[bot]**](https://github.com/ahmed-taj/commitlint-bot). Please report issues [here](https://github.com/ahmed-taj/commitlint-bot/issues). Happy coding!
+🤖 This comment was generated by [**commitlint[bot]**][repo]. Please report \
+issues [here][issues].
+
+Happy coding!
+
+[ref]: https://help.github.com/articles/changing-a-commit-message/
+[repo]: https://github.com/ahmed-taj/commitlint-bot
+[issues]: https://github.com/ahmed-taj/commitlint-bot/issues
 `
 	}
 	return { summary, message }

lib/lint.js

@@ -9,17 +9,14 @@ const format = require('./format')
  * Runs commitlint against all commits of the pull request and sets an appropriate
  * status check
  */
-const commitlint = async ({ github, payload }) => {
-	const { name, owner } = payload.repository
-	const { number } = payload.pull_request
+async function commitlint(context) {
+	const { github } = context
+	const pull = context.issue()
+	const { sha } = context.payload.pull_request.head
+	const repo = context.repo()
 
 	// Hold this PR info
-	const statusInfo = {
-		sha: payload.pull_request.head.sha,
-		repo: name,
-		owner: owner.login,
-		context: 'commitlint'
-	}
+	const statusInfo = { ...repo, sha, context: 'commitlint' }
 
 	// Pending
 	await github.repos.createStatus({
@@ -29,44 +26,37 @@ const commitlint = async ({ github, payload }) => {
 	})
 
 	// Paginate all PR commits
-	github.paginate(
-		github.pullRequests.getCommits({ repo: name, owner: owner.login, number }),
-		async commits => {
-			// empty summary
-			const report = { valid: true, commits: {} }
-			const { rules } = await load(config)
-
-			// Iterates over all commits
-			for (const d of commits.data) {
-				const { valid, errors, warnings } = await lint(d.commit.message, rules)
-				if (!valid) {
-					report.valid = false
-				}
+	github.paginate(github.pullRequests.getCommits(pull), async ({ data }) => {
+		// empty summary
+		const report = { valid: true, commits: {} }
+		const { rules } = await load(config)
+
+		// Iterates over all commits
+		for (const d of data) {
+			const { valid, errors, warnings } = await lint(d.commit.message, rules)
+			if (!valid) {
+				report.valid = false
+			}
 
-				if (errors.length > 0 || warnings.length > 0) {
-					report.commits[d.sha] = { errors, warnings }
-				}
+			if (errors.length > 0 || warnings.length > 0) {
+				report.commits[d.sha] = { errors, warnings }
 			}
+		}
 
-			const { summary, message } = format(report)
+		const { summary, message } = format(report)
 
-			// Final status
-			await github.repos.createStatus({
-				...statusInfo,
-				state: report.valid ? 'success' : 'failure',
-				description: summary
-			})
-			// Write a comment with the details (if any)
-			if (message) {
-				await github.issues.createComment({
-					repo: name,
-					owner: owner.login,
-					number,
-					body: message
-				})
-			}
+		// Final status
+		await github.repos.createStatus({
+			...statusInfo,
+			state: report.valid ? 'success' : 'failure',
+			description: summary
+		})
+
+		// Write a comment with the details (if any)
+		if (message !== '') {
+			await github.issues.createComment({ ...pull, body: message })
 		}
-	)
+	})
 }
 
 module.exports = commitlint