add a integration test for redpen (#10)

.github/workflows/depup.yml

@@ -7,7 +7,7 @@ on:
       - '**'
 
 jobs:
-  depup:
+  reviewdog:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -30,3 +30,27 @@ jobs:
             This PR is auto generated by [depup workflow](https://github.com/${{ github.repository }}/actions?query=workflow%3Adepup).
           branch: depup/reviewdog
           base: master
+
+  redpen:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        id: depup
+        with:
+          file: testdata/testfile
+          version_name: REDPEN_VERSION
+          repo: redpen-cc/redpen
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          title: "chore(deps): update redpen to ${{ steps.depup.outputs.latest }}"
+          commit-message: "chore(deps): update redpen to ${{ steps.depup.outputs.latest }}"
+          body: |
+            Update redpen to [${{ steps.depup.outputs.latest }}](https://github.com/redpen-cc/redpen/releases/tag/redpen-${{ steps.depup.outputs.latest }})
+
+            This PR is auto generated by [depup workflow](https://github.com/${{ github.repository }}/actions?query=workflow%3Adepup).
+          branch: depup/redpen
+          base: master