assertTrue("could not open file for writing", retval >= 0);
retval = container.close();
assertTrue("could not close file", retval >= 0);
retval = container.open("file:"+mSampleFile,
IContainer.Type.READ, null);
assertTrue("could not open file for writing", retval >= 0);
retval = container.close();
assertTrue("could not close file", retval >= 0);