Implement the feature described in the OpenEJB FAQ for supplying a custom configuration file.

http://openejb.apache.org/faq.html

Create an openejb.xml file in any directory* that gets added to your test classpath. Then in your test case do this:

protected void setUp() throws Exception {
Properties properties = new Properties();
properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");
URL config = this.getClass().getClassLoader().getResource("openejb.xml");
properties.setProperty("openejb.configuration", config.toExternalForm());
initialContext = new InitialContext(properties);
}

• The name of this file could be an Arquillian container configuration property.