diff --git a/cmd/genbindings/transformchildclasses_test.go b/cmd/genbindings/transformchildclasses_test.go
new file mode 100644
index 00000000..456b5fac
--- /dev/null
+++ b/cmd/genbindings/transformchildclasses_test.go
@@ -0,0 +1,49 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestChildClassesExtract(t *testing.T) {
+
+	src := CppParsedHeader{
+		Classes: []CppClass{
+
+			CppClass{
+				ClassName: "Parent",
+
+				ChildClassdefs: []CppClass{
+
+					CppClass{
+						ClassName: "Parent::Child",
+
+						ChildClassdefs: []CppClass{
+
+							CppClass{
+								ClassName: "Parent::Child::Grandchild",
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	astTransformChildClasses(&src)
+	if len(src.Classes) != 3 {
+		t.Fatal("expected 3 classes")
+	}
+
+	if src.Classes[0].ClassName != "Parent" {
+		t.Fatal("expected parent class name")
+	}
+
+	if src.Classes[1].ClassName != "Parent::Child::Grandchild" {
+		t.Fatal("expected grandchild class name")
+	}
+
+	if src.Classes[2].ClassName != "Parent::Child" {
+		t.Fatal("expected child class name")
+	}
+
+}