Add missing test

Author: AndreasArvidsson

data/fixtures/scopes/cpp/value.argument.formal.method.iteration.scope

@@ -0,0 +1,9 @@
+class MyClass {
+    void foo(int aaa, int bbb = 2) {}
+}
+---
+
+[Range] =
+[Domain] = 1:13-1:33
+               >--------------------<
+1|     void foo(int aaa, int bbb = 2) {}