short-sha

.github/workflows/test.yml

@@ -10,14 +10,21 @@ jobs:
   build: # make sure build/ci work properly
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - run: |
         npm install
         npm run all
   test: # make sure the action works on a clean machine without building
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: ./
+      id: short-sha
       with: 
-        milliseconds: 1000
+        length: 6
+    - name: validate output
+      run: | 
+        echo $SHA;
+        [ ${#SHA} -eq 6 ] && exit 0 || exit 1;
+      env:
+        SHA: ${{ steps.short-sha.outputs.sha }}