test: add testcase for utils

Signed-off-by: qiuming520 <qiuming_yewu@cmss.chinamobile.com>

pkg/utils/calico_test.go

@@ -0,0 +1,83 @@
+// nolint:dupl
+package utils
+
+import "testing"
+
+// TestGetCIDRs tests the GetCIDRs function.
+func TestGetCIDRs(t *testing.T) {
+	tests := []struct {
+		name     string
+		obj      map[string]interface{}
+		expected string
+	}{
+		{
+			name:     "nil input",
+			obj:      nil,
+			expected: "",
+		},
+		{
+			name:     "empty map",
+			obj:      map[string]interface{}{},
+			expected: "",
+		},
+		{
+			name: "missing spec",
+			obj: map[string]interface{}{
+				"foo": "bar",
+			},
+			expected: "",
+		},
+		{
+			name: "spec is not a map",
+			obj: map[string]interface{}{
+				"spec": "not-a-map",
+			},
+			expected: "",
+		},
+		{
+			name: "spec without cidr",
+			obj: map[string]interface{}{
+				"spec": map[string]interface{}{
+					"foo": "bar",
+				},
+			},
+			expected: "",
+		},
+		{
+			name: "spec with cidr",
+			obj: map[string]interface{}{
+				"spec": map[string]interface{}{
+					"cidr": "192.168.1.0/24",
+				},
+			},
+			expected: "192.168.1.0/24",
+		},
+		{
+			name: "spec with cidr as empty string",
+			obj: map[string]interface{}{
+				"spec": map[string]interface{}{
+					"cidr": "",
+				},
+			},
+			expected: "",
+		},
+		{
+			name: "cidr is not a string",
+			obj: map[string]interface{}{
+				"spec": map[string]interface{}{
+					"cidr": 12345,
+				},
+			},
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := GetCIDRs(tt.obj)
+			if result != tt.expected {
+				t.Errorf("expected %q, got %q", tt.expected, result)
+			}
+		})
+	}
+}