APIGOV-28116 - test for dependency changes

.github/workflows/update-gomod-for-tests.yml

@@ -22,14 +22,30 @@ jobs:
           go-version: 1.21
 
       - name: Update SDK version in go.mod
+        id: updatesdk
         working-directory: .
         run: |
           make dep-version sdk=main
-          git config --global user.email [email protected]
-          git config --global user.name builder-lphxmjtnt11
-          git commit --allow-empty -m "Updating SDK in go.mod"
+          set +e  # Grep succeeds with nonzero exit codes to show results.
+          git status | grep modified
+          if [ $? -eq 0 ]
+          then
+              set -e
+              echo -e "Committing dependency changes"
+              git config --global user.email [email protected]
+              git config --global user.name builder-lphxmjtnt11
+              git commit --allow-empty -m "Updating SDK in go.mod"
+              git push origin ${BRANCH_REF}
+              echo "gomodChanged="y" >> $GITHUB_OUTPUT
+          else
+              set -e
+              echo -e "No dependency changes since last run"
+              echo "gomodChanged="n" >> $GITHUB_OUTPUT
+          fi
+          echo "${{ steps.updatesdk.outputs.gomodChanged }}"
 
       - name: Create Pull Request
+        if: ${{ steps.updatesdk.outputs.gomodChanged == 'y' }}
         id: cpr
         uses: peter-evans/create-pull-request@v6
         with:
@@ -40,6 +56,7 @@ jobs:
           reviewers: dfeldick
 
       - name: Enable Pull Request Automerge
+        if: ${{ steps.updatesdk.outputs.gomodChanged == 'y' }}
         run: gh pr merge APIGOV-UpdateSDKForTesting --admin --merge --subject "Merge branch APIGOV-UpdateSDKForTesting"
         env:
           GH_TOKEN: ${{ secrets.ACTION_ACCESS_TOKEN }}