chore: add Kubernetes testing support

- Add a step to get k8s info in the testing workflow
- Set environment variables for K8S_SERVER, K8S_CA_CERT, and K8S_TOKEN in the testing job
- Add a new test function for KubeConfig in plugin_test.go
- Create a new instance of the Plugin struct in the KubeConfig test function

Signed-off-by: appleboy <appleboy.tw@gmail.com>

.github/workflows/testing.yml

@@ -38,12 +38,25 @@ jobs:
         run: |
           kubectl version -o yaml --client
 
+      - name: get k8s info
+        id: k8s_info
+        run: |
+          kubectl create namespace test-namespace
+          kubectl apply -f example/serviceAccount.yaml
+          echo K8S_SERVER=$(kubectl config view --raw --minify --flatten -o jsonpath='{.clusters[].cluster.server}') >> $GITHUB_OUTPUT
+          echo K8S_CA_CERT=$(kubectl config view --raw --minify --flatten -o jsonpath='{.clusters[].cluster.certificate-authority-data}') >> $GITHUB_OUTPUT
+          echo K8S_TOKEN=$(kubectl get secret deploy -n test-namespace -o jsonpath='{.data.token}' | base64 -d) >> $GITHUB_OUTPUT
+
       - name: Setup go
         uses: actions/setup-go@v5
         with:
           go-version: "^1.21"
 
       - name: testing
+        env:
+          K8S_SERVER: ${{ steps.k8s_info.outputs.K8S_SERVER }}
+          K8S_CA_CERT: ${{ steps.k8s_info.outputs.K8S_CA_CERT }}
+          K8S_TOKEN: ${{ steps.k8s_info.outputs.K8S_TOKEN }}
         run: |
           make test
 

plugin_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"os"
 	"testing"
 
 	"github.com/appleboy/deploy-k8s/config"
@@ -33,3 +34,23 @@ func TestCheckConfig(t *testing.T) {
 		t.Errorf("Expected error: token is required")
 	}
 }
+
+func TestKubeConfig(t *testing.T) {
+	// Create a new instance of the Plugin struct
+	p := &Plugin{
+		Config: &config.K8S{
+			Server: os.Getenv("KUBE_SERVER"),
+			CaCert: os.Getenv("KUBE_CA_CERT"),
+			Output: "kubeconfig.yaml",
+			Debug:  true,
+		},
+		AuthInfo: &config.AuthInfo{
+			Token: os.Getenv("KUBE_TOKEN"),
+		},
+	}
+
+	err := p.Exec()
+	if err != nil {
+		t.Errorf("Expected error: cannot create kube config: %s", err.Error())
+	}
+}