Add unit test to verify non-empty selector from CSVOwnerSelector

The CSVOwnerSelector should never return an empty selector (which
is equavalent of Everything()).

Signed-off-by: Vu Dinh <[email protected]>

Author: dinhxuanvu

pkg/lib/ownerutil/util_test.go

@@ -1,7 +1,66 @@
 package ownerutil
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	operatorsv1alpha1 "github.com/operator-framework/api/pkg/operators/v1alpha1"
+)
 
 func TestIsOwnedBy(t *testing.T) {
 	return
 }
+
+func TestCSVOwnerSelector(t *testing.T) {
+	csvType := metav1.TypeMeta{
+		Kind:       operatorsv1alpha1.ClusterServiceVersionKind,
+		APIVersion: operatorsv1alpha1.GroupVersion,
+	}
+
+	tests := []struct {
+		name string
+		csv  *operatorsv1alpha1.ClusterServiceVersion
+	}{
+		{
+			name: "CSV with name longer than 63 characters",
+			csv: &operatorsv1alpha1.ClusterServiceVersion{
+				TypeMeta: csvType,
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "clusterkubedescheduleroperator.4.6.0-202106010807.p0.git.5db84c5",
+					Namespace: "test-namespace",
+				},
+			},
+		},
+		{
+			name: "CSV with invalid name",
+			csv: &operatorsv1alpha1.ClusterServiceVersion{
+				TypeMeta: csvType,
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "something@somewhere",
+					Namespace: "test-namespace",
+				},
+			},
+		},
+		{
+			name: "CSV with empty string name",
+			csv: &operatorsv1alpha1.ClusterServiceVersion{
+				TypeMeta: csvType,
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      "",
+					Namespace: "test-namespace",
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			selector := CSVOwnerSelector(tt.csv)
+
+			assert.NotNil(t, selector)
+			assert.False(t, selector.Empty())
+		})
+	}
+}