✨ feat: add Go Kubernetes operator

operator/internal/controller/apply_test.go

@@ -0,0 +1,91 @@
+package controller
+
+import (
+	"encoding/json"
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
+
+	v1alpha1 "github.com/YuzuZensai/Minikura/operator/api/v1alpha1"
+)
+
+func testScheme(t *testing.T) *runtime.Scheme {
+	t.Helper()
+	s := runtime.NewScheme()
+	if err := clientgoscheme.AddToScheme(s); err != nil {
+		t.Fatalf("add client-go scheme: %v", err)
+	}
+	if err := v1alpha1.AddToScheme(s); err != nil {
+		t.Fatalf("add v1alpha1 scheme: %v", err)
+	}
+	return s
+}
+
+func TestTypedObjectMarshalsWithoutTypeMeta(t *testing.T) {
+	cm := &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "a", Namespace: "b"}}
+
+	var m map[string]any
+	raw, err := json.Marshal(cm)
+	if err != nil {
+		t.Fatalf("marshal: %v", err)
+	}
+	if err := json.Unmarshal(raw, &m); err != nil {
+		t.Fatalf("unmarshal: %v", err)
+	}
+
+	if _, ok := m["apiVersion"]; ok {
+		t.Fatal("precondition changed: typed objects now carry apiVersion")
+	}
+	if _, ok := m["kind"]; ok {
+		t.Fatal("precondition changed: typed objects now carry kind")
+	}
+}
+
+func TestApplySetsTypeMeta(t *testing.T) {
+	scheme := testScheme(t)
+	owner := &v1alpha1.MinecraftServer{
+		ObjectMeta: metav1.ObjectMeta{Name: "smp", Namespace: "minikura", UID: "abc"},
+	}
+
+	cm := &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "a", Namespace: "minikura"}}
+	if err := setOwner(owner, cm, scheme); err != nil {
+		t.Fatalf("setOwner: %v", err)
+	}
+
+	gvk, err := apiutil.GVKForObject(cm, scheme)
+	if err != nil {
+		t.Fatalf("GVKForObject: %v", err)
+	}
+	cm.GetObjectKind().SetGroupVersionKind(gvk)
+
+	raw, err := json.Marshal(cm)
+	if err != nil {
+		t.Fatalf("marshal: %v", err)
+	}
+	var m map[string]any
+	if err := json.Unmarshal(raw, &m); err != nil {
+		t.Fatalf("unmarshal: %v", err)
+	}
+
+	if m["apiVersion"] != "v1" {
+		t.Errorf("apiVersion = %v, want v1", m["apiVersion"])
+	}
+	if m["kind"] != "ConfigMap" {
+		t.Errorf("kind = %v, want ConfigMap", m["kind"])
+	}
+
+	refs := cm.GetOwnerReferences()
+	if len(refs) != 1 {
+		t.Fatalf("ownerReferences = %d, want 1", len(refs))
+	}
+	if refs[0].Kind != "MinecraftServer" || refs[0].Name != "smp" {
+		t.Errorf("owner = %s/%s, want MinecraftServer/smp", refs[0].Kind, refs[0].Name)
+	}
+	if refs[0].Controller == nil || !*refs[0].Controller {
+		t.Error("owner reference should be a controller reference")
+	}
+}