Test the Arduino examples against wolfSSL master and latest stable

Author: aidangarske

.github/workflows/_resolve-wolfssl.yml

@@ -23,6 +23,9 @@ on:
       shas:
         description: 'commit SHAs for those refs, same order'
         value: ${{ jobs.resolve.outputs.shas }}
+      refs_json:
+        description: 'same refs as a JSON array, for strategy.matrix'
+        value: ${{ jobs.resolve.outputs.refs_json }}
 
 jobs:
   resolve:
@@ -31,6 +34,7 @@ jobs:
     outputs:
       refs: ${{ steps.pick.outputs.refs }}
       shas: ${{ steps.sha.outputs.shas }}
+      refs_json: ${{ steps.json.outputs.refs_json }}
     steps:
       - id: pick
         run: |
@@ -86,3 +90,11 @@ jobs:
                         <(tr ',' '\n' <<< "$shas") \
               | awk -F'|' '{print "- `"$1"` @ `"substr($2,1,12)"`"}'
           } >> "$GITHUB_STEP_SUMMARY"
+
+      - id: json
+        run: |
+          set -euo pipefail
+          json=$(printf '%s' '${{ steps.pick.outputs.refs }}' \
+            | tr ',' '\n' | jq -R . | jq -sc .)
+          echo "refs_json=$json" >> "$GITHUB_OUTPUT"
+          echo "matrix refs: $json"

.github/workflows/arduino.yml

@@ -70,14 +70,22 @@ concurrency:
 # END OF COMMON SECTION
 
 jobs:
+  resolve:
+    if: github.repository_owner == 'wolfssl'
+    uses: ./.github/workflows/_resolve-wolfssl.yml
+    with:
+      stable_count: 1
+
   build:
-    name: on FQBN (${{ matrix.fqbn }})
+    name: on FQBN (${{ matrix.fqbn }}) wolfSSL ${{ matrix.wolfssl_ref }}
     if: github.repository_owner == 'wolfssl'
+    needs: resolve
     runs-on: ubuntu-latest
 
     strategy:
       fail-fast: false
       matrix:
+        wolfssl_ref: ${{ fromJson(needs.resolve.outputs.refs_json) }}
         fqbn:
           # When editing this list, be sure to also edit file: board_list.txt
           #   The compile-all-examples.sh optionally takes a FQBN parameter to
@@ -268,9 +276,11 @@ jobs:
 
       - name: Shallow Clone wolfssl
         run: |
-          # Clone the latest wolfssl to use for building examples
+          # Clone the wolfssl ref under test: master or the latest stable tag,
+          # rather than always master
 
-          git clone --depth 1 https://github.com/$REPO_OWNER/wolfssl.git
+          git clone --depth 1 --branch '${{ matrix.wolfssl_ref }}' \
+            https://github.com/$REPO_OWNER/wolfssl.git
 
           # Assign your PR branch for testing here:
           THIS_PR_BRANCH=""