[skip ci] cicd: update lint and test workflow

Author: sunggun-yu

.github/workflows/lint-test.yaml renamed to .github/workflows/test.yaml

@@ -9,15 +9,48 @@ on:
     types:
       - opened
       - synchronize
-  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - "charts/**"
 
 env:
   # make install test false for now
   DO_INSTALL_TEST: false
 
 jobs:
+  # The pre-check job determines whether the workflow should proceed based on the event type and associated PRs:
+  # - true if the commit is not associated with any PR if it is a push event
+  # - true if the event is a PR event
+  # so that, we can skip the following job if the commit is associated with a PR when it is merged to main branch
+  # - to prevent running the job twice
+  pre-check:
+    runs-on: ubuntu-latest
+    outputs:
+      run_workflow: ${{ steps.check-commit.outputs.result }}
+    steps:
+      - uses: actions/github-script@v7
+        if: github.event_name == 'push'
+        id: check-commit
+        with:
+          script: |
+            const associatedPRs = await github.rest.repos.listPullRequestsAssociatedWithCommit({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              commit_sha: context.sha
+            });
+            return associatedPRs.data.length == 0;
+          result-encoding: string
+      
+      # Set default output for PR events
+      - if: github.event_name == 'pull_request'
+        id: pr-event
+        run: echo "result=true" >> $GITHUB_OUTPUT
+
   lint-test:
-    if: github.head_ref != 'release-please--branches--main'
+    needs: pre-check
+    if: needs.pre-check.outputs.run_workflow == 'true' || github.head_ref != 'release-please--branches--main'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -38,7 +71,11 @@ jobs:
       - name: Set up chart-testing
         uses: helm/chart-testing-action@v2
 
-      - name: Run chart-testing (list-changed)
+      - name: Install Helm Unittest plugin
+        run: |
+          helm plugin install https://github.com/helm-unittest/helm-unittest.git
+
+      - name: List changed charts
         id: list-changed
         run: |
           changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }})
@@ -47,21 +84,16 @@ jobs:
             echo "charts=$(echo "$changed" | tr '\n' ' ')" >> "$GITHUB_OUTPUT"
           fi
 
-      - name: Run chart-testing (lint)
+      - name: Lint charts
         if: steps.list-changed.outputs.changed == 'true'
         run: ct lint --config .github/config/chart-testing.yaml
 
-      - name: Run chart-testing (template)
+      - name: Unit testing
         if: steps.list-changed.outputs.changed == 'true'
-        id: update-dependencies
+        id: unittest
         run: |
-          for updated_chart in ${{ steps.list-changed.outputs.charts }}; do
-            echo "================================================================================"
-            echo " templating $updated_chart"
-            echo "================================================================================"
-            helm dependency update $updated_chart
-            helm template $updated_chart
-          done
+          helm dependency update ${{ steps.list-changed.outputs.charts }}
+          helm unittest ${{ steps.list-changed.outputs.charts }}
 
       - name: Create kind cluster
         if: ${{ steps.list-changed.outputs.changed == 'true' && env.DO_INSTALL_TEST == 'true' }}