Add nested_inheritance_interface test

Examples/test-suite/common.mk

@@ -324,6 +324,7 @@ CPP_TEST_CASES += \
 	nested_directors \
 	nested_comment \
 	nested_ignore \
+	nested_inheritance_interface \
 	nested_in_template \
 	nested_scope \
 	nested_template_base \

Examples/test-suite/java/nested_inheritance_interface_runme.java

@@ -0,0 +1,28 @@
+import nested_inheritance_interface.*;
+import java.util.Arrays;
+
+public class nested_inheritance_interface_runme {
+
+  static {
+    try {
+      System.loadLibrary("nested_inheritance_interface");
+    } catch (UnsatisfiedLinkError e) {
+      System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
+      System.exit(1);
+    }
+  }
+
+  public static void main(String argv[]) {
+	Class[] BNInterfaces = B.N.class.getInterfaces();
+    String expectedInterfacesString = "[interface nested_inheritance_interface.IASwigInterface]";
+    String actualInterfacesString = Arrays.toString(BNInterfaces);
+    if (!expectedInterfacesString.equals(actualInterfacesString))
+      throw new RuntimeException("Expected interfaces for " + B.N.class.getName() + ": \n" + expectedInterfacesString + "\n" + "Actual interfaces: \n" + actualInterfacesString);
+
+    if (!IASwigInterface.class.isInterface())
+      throw new RuntimeException(IASwigInterface.class.getName() + " should be an interface but is not");
+
+    // overloaded methods check
+    B.N d = new B.N();
+  }
+}

Examples/test-suite/nested_inheritance_interface.i

@@ -0,0 +1,15 @@
+%module  nested_inheritance_interface
+
+%warnfilter(SWIGWARN_RUBY_MULTIPLE_INHERITANCE,
+	    SWIGWARN_D_MULTIPLE_INHERITANCE,
+	    SWIGWARN_PHP_MULTIPLE_INHERITANCE); /* languages not supporting multiple inheritance or %interface */
+
+#if defined(SWIGJAVA) || defined(SWIGCSHARP)
+%include "swiginterface.i"
+%interface(IA)
+#endif
+
+%inline %{
+struct IA {};
+struct B { struct N : IA {}; };
+%}