chore: Separate job for E2E testing

.github/workflows/ci.yaml

@@ -5,6 +5,8 @@ on:
   pull_request:
     paths:
       - "charts/**"
+      - "e2e/**"
+      - "tests/**"
 
 permissions:
   contents: read
@@ -130,14 +132,38 @@ jobs:
         with:
           version: v1.61
 
+      - name: Run go test
+        run: go test -v ./tests/...
+
+  e2e-test:
+    name: e2e-test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Setup helm
+        uses: azure/setup-helm@v3
+        with:
+          version: v3.6.3
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: stable
+
       - name: Create kind cluster
         uses: helm/[email protected]
         with:
           node_image: kindest/node:v1.29.2
           version: v0.20.0
 
-      - name: Run go test
-        run: go test -v ./...
+      - name: Run e2e test
+        # The timeout is explicitly set to clarify that we intend it to be short enough
+        # and not uncontrollably getting longer.
+        run: go test -v ./e2e/... -timeout 5m
 
   install-chart:
     name: install-chart