Add BATS shell tests to github workflows

Signed-off-by: Mathias Burger <[email protected]>

.github/workflows/test.yml

@@ -14,3 +14,18 @@ jobs:
       - uses: actions/checkout@v3
       - name: Run ShellCheck
         uses: ludeeus/action-shellcheck@master
+  bats-tests:
+    name: BATS Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install BATS and dependencies from Ubuntu repositories
+        run: sudo apt-get update && sudo apt-get install -y bats
+#      - name: Upgrade BATS from github
+#        run: |
+#          git clone https://github.com/bats-core/bats-core.git
+#          git checkout git checkout v1.9.0
+#          cd bats-core
+#          sudo ./install.sh /usr/local
+      - name: Run BATS Tests
+        run: bats --formatter pretty test