Test self runners.

.github/workflows/test.yml

@@ -0,0 +1,20 @@
+name: a
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    name: Run test.
+    runs-on: arc-runner-set0
+    steps:
+      - name: Checkout repository.
+        uses: actions/checkout@v2
+
+      - name: Install Python.
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+
+      - name: Test.
+        run: echo "Test"