Add test case for issue 13197

test/compilable/imports/test13197/a.d

@@ -0,0 +1,15 @@
+module imports.test13197.a;
+
+import imports.test13197.y;   // import class C
+import imports.test13197.y.z; // import class D : C
+
+void g()
+{
+  C c;
+  c.f(); // no problem, C is declared in the same package
+
+  D d;
+  d.f(); // error! D doesn't define f(), C does, and we have access to C as demonstrated above
+}
+
+

test/compilable/imports/test13197/y.d

@@ -0,0 +1,10 @@
+module imports.test13197.y;
+
+class C
+{
+package:
+  void f()
+  {
+  }
+}
+

test/compilable/imports/test13197/y/z.d

@@ -0,0 +1,6 @@
+module imports.test13197.y.z;
+
+import imports.test13197.y;
+class D : C
+{
+}

test/compilable/issue13197.d

@@ -0,0 +1,11 @@
+/**
+EXTRA_SOURCES: imports/test13197/a.d imports/test13197/y/package.d imports/test13197/y/z.d
+*/
+// https://issues.dlang.org/show_bug.cgi?id=13197
+module issue13197;
+
+import imports.test13197.a;
+
+void test() { g(); }
+
+