feat(): increased test coverage and added simple workflow to build OCI image

internal/kube_test.go

@@ -0,0 +1,73 @@
+package internal
+
+import (
+	"context"
+	"testing"
+
+	coordv1 "k8s.io/api/coordination/v1"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes/fake"
+)
+
+func TestGetNodeNameFromLease_Valid(t *testing.T) {
+	l := coordv1.Lease{}
+	l.Name = "cilium-l2announce-1"
+	hi := "aa-bb-node1"
+	l.Spec.HolderIdentity = &hi
+
+	node, err := GetNodeNameFromLease(l)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if node != "node1" {
+		t.Fatalf("unexpected node name: got %s", node)
+	}
+}
+
+func TestGetNodeNameFromLease_Invalid(t *testing.T) {
+	l := coordv1.Lease{}
+	l.Name = "cilium-l2announce-2"
+	hi := "too-short"
+	l.Spec.HolderIdentity = &hi
+
+	_, err := GetNodeNameFromLease(l)
+	if err == nil {
+		t.Fatalf("expected error for invalid holder identity")
+	}
+}
+
+func TestApplyLabelToNode_WithFakeClient(t *testing.T) {
+	client := fake.NewSimpleClientset()
+
+	node := &corev1.Node{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:   "test-node",
+			Labels: map[string]string{},
+		},
+	}
+	_, err := client.CoreV1().Nodes().Create(context.TODO(), node, metav1.CreateOptions{})
+	if err != nil {
+		t.Fatalf("failed to create fake node: %v", err)
+	}
+
+	cfg := &Config{CiliumLabel: "mylabel", DryRun: false}
+
+	err = ApplyLabelToNode(client, "test-node", "lease-1", cfg)
+	if err != nil {
+		t.Fatalf("ApplyLabelToNode failed: %v", err)
+	}
+
+	updated, err := client.CoreV1().Nodes().Get(context.TODO(), "test-node", metav1.GetOptions{})
+	if err != nil {
+		t.Fatalf("failed to get node: %v", err)
+	}
+
+	if updated.Labels["mylabel"] != "true" {
+		t.Fatalf("expected label set on node, got: %v", updated.Labels)
+	}
+
+	if updated.Labels["cilium.uploadfilter24.eu/lease"] != "lease-1" {
+		t.Fatalf("expected lease label set on node, got: %v", updated.Labels)
+	}
+}