feat: Added branch matcher (#14)

.github/labeler.yml

@@ -5,21 +5,25 @@ labels:
   - label: "feat"
     matcher:
       title: "^feat:.*"
+      branch: "^feat/.*"
       commits: "^feat:.*"
 
   - label: "fix"
     matcher:
       title: "^fix:.*"
+      branch: "^fix/.*"
       commits: "^fix:.*"
 
   - label: "chore"
     matcher:
       title: "^chore(\\((deps|ci)\\))?:.*"
+      branch: "^chore/.*"
       commits: "^chore(\\((deps|ci)\\))?:.*"
 
   - label: "docs"
     matcher:
       title: "^docs:.*"
+      branch: "^docs/.*"
       commits: "^docs:.*"
 
   ### Examples

README.md

@@ -54,6 +54,17 @@ labels:
       body: "(\\n|.)*- \\[x\\] bug(\\n|.)*"
 ```
 
+### PR Branch: RegEx
+
+```yml
+version: v1
+
+labels:
+  - label: "feat"
+    matcher:
+      branch: "^feat/.*"
+```
+
 ## Features
 
 - Append based multi-labeler, using `.github/labeler.yml` as config.

__tests__/labeler.test.ts

@@ -93,7 +93,7 @@ describe('main core and context', () => {
     }
 
     await run('token', '__tests__/fixtures/empty.yml')
-  });
+  })
 
   describe('basic.yml', () => {
     beforeEach(async () => {

__tests__/matcher/branch.test.ts

@@ -0,0 +1,59 @@
+import match from '../../src/matcher/branch'
+import * as github from '@actions/github'
+import {Config} from '../../src/config'
+
+function getMatchedLabels(config: Config): string[] {
+  // @ts-ignore
+  return match(null, config)
+}
+
+const config: Config = {
+  version: 'v1',
+  labels: [
+    {
+      label: 'feat',
+      matcher: {
+        branch: '^feat/.*'
+      }
+    }
+  ]
+}
+
+describe('empty', function () {
+  it('no payload should be undefined', async function () {
+    github.context.payload = {}
+    expect(getMatchedLabels(config)).toEqual([])
+  })
+
+  it('pull_request should be empty', async function () {
+    github.context.payload = {
+      pull_request: {
+        number: 1,
+        title: 'nothing interesting',
+        head: {
+          ref: 'spaceship'
+        }
+      }
+    }
+
+    expect(getMatchedLabels(config)).toEqual([])
+  })
+});
+
+describe('pull_request', () => {
+  it('should have feat', async function () {
+    github.context.payload = {
+      pull_request: {
+        number: 1,
+        title: 'spaceship',
+        head: {
+          ref: 'feat/spaceship'
+        }
+      }
+    }
+
+    const labels = getMatchedLabels(config)
+    expect(labels).toEqual(['feat'])
+  })
+})
+