Retry tests and examples on staging API 503s

.github/workflows/build.yml

@@ -59,23 +59,31 @@ jobs:
             echo "::error::The CONVERTAPI_STAGING_TOKEN secret is not available to this run (a pull request from a fork gets no secrets)"
             exit 1
           fi
-          npm test
+          # The staging API now and then answers 503 (no healthy upstream), so each test gets two retries.
+          npm run lint
+          npm run cover -- --retries 2
 
       - name: Build
         run: npm run build
 
       # The examples call the production API and catch and print their own errors, so the preload points
-      # them at CONVERT_API_BASE_URI and any printed error fails the step.
+      # them at CONVERT_API_BASE_URI and any printed error fails an attempt. Up to three attempts, because
+      # the staging API now and then answers 503.
       - name: Run the examples
         env:
           API_TOKEN: ${{ secrets.CONVERTAPI_STAGING_TOKEN }}
         run: |
           set -euo pipefail
-          node --require ./.github/examples-base-uri.js examples/ 2>&1 | tee examples.log
-          if grep -q '^Error' examples.log; then
-            echo "::error::An example failed, see the errors above"
-            exit 1
-          fi
+          for attempt in 1 2 3; do
+            node --require ./.github/examples-base-uri.js examples/ 2>&1 | tee examples.log
+            if ! grep -q '^Error' examples.log; then
+              exit 0
+            fi
+            echo "::warning::Attempt $attempt: an example failed, see the errors above"
+            sleep 10
+          done
+          echo "::error::The examples failed three times"
+          exit 1
 
   build:
     name: build

.github/workflows/publish.yml

@@ -144,7 +144,10 @@ jobs:
       - name: Lint and test
         env:
           CONVERT_API_SECRET: ${{ secrets.CONVERTAPI_STAGING_TOKEN }}
-        run: npm test
+        # The staging API now and then answers 503 (no healthy upstream), so each test gets two retries.
+        run: |
+          npm run lint
+          npm run cover -- --retries 2
 
       - name: Set the version and build
         env: