优化结构

internal/paymentkit/json_test.go

@@ -2,10 +2,10 @@ package paymentkit
 
 import "testing"
 
-func TestNestedAndPathValues(t *testing.T) {
+func TestJSONObjectAndPathValues(t *testing.T) {
 	object := JSONObject([]byte(`{"data":{"status":"SUCCESS","amount":100}}`))
-	if got := NestedString(object, "status"); got != "SUCCESS" {
-		t.Fatalf("NestedString = %q", got)
+	if object == nil {
+		t.Fatal("JSONObject returned nil")
 	}
 	if got := StringAtPath(object, "data.amount"); got != "100" {
 		t.Fatalf("StringAtPath = %q", got)