CI: ensure we don't break autotest help options

.github/workflows/test_scripts.yml

@@ -0,0 +1,29 @@
+name: test scripts
+
+on: [push, pull_request, workflow_dispatch]
+
+concurrency:
+  group: ci-${{github.workflow}}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-20.04
+    container: ardupilot/ardupilot-dev-base:latest
+    strategy:
+      fail-fast: false  # don't cancel if a job from the matrix fails
+      matrix:
+        config: [
+            check_autotest_options
+        ]
+    steps:
+      # git checkout the PR
+      - uses: actions/checkout@v3
+        with:
+          submodules: 'recursive'
+      - name: test ${{matrix.config}}
+        env:
+          CI_BUILD_TARGET: ${{matrix.config}}
+        shell: bash
+        run: |
+          Tools/scripts/build_ci.sh

Tools/scripts/build_ci.sh

@@ -45,14 +45,7 @@ function install_pymavlink() {
     fi
 }
 
-function run_autotest() {
-    NAME="$1"
-    BVEHICLE="$2"
-    RVEHICLE="$3"
-
-    # report on what cpu's we have for later log review if needed
-    cat /proc/cpuinfo
-
+function install_mavproxy() {
     if [ $mavproxy_installed -eq 0 ]; then
         echo "Installing MAVProxy"
         pushd /tmp
@@ -65,6 +58,17 @@ function run_autotest() {
         # now uninstall the version of pymavlink pulled in by MAVProxy deps:
         python -m pip uninstall -y pymavlink
     fi
+}
+
+function run_autotest() {
+    NAME="$1"
+    BVEHICLE="$2"
+    RVEHICLE="$3"
+
+    # report on what cpu's we have for later log review if needed
+    cat /proc/cpuinfo
+
+    install_mavproxy
     install_pymavlink
     unset BUILDROOT
     echo "Running SITL $NAME test"
@@ -345,6 +349,16 @@ for t in $CI_BUILD_TARGET; do
         continue
     fi
 
+    if [ "$t" == "check_autotest_options" ]; then
+        echo "Checking autotest options"
+        install_mavproxy
+        install_pymavlink
+        ./Tools/autotest/autotest.py --help
+        ./Tools/autotest/autotest.py --list
+        ./Tools/autotest/autotest.py --list-subtests
+        continue
+    fi
+
     if [ "$t" == "signing" ]; then
         echo "Building signed firmwares"
         sudo apt-get update