Guvnor Test Scenarios - "unable to find constructor" error using a Java Interface in the Facts model ---------------------------------------------------------------------------------------------------- Key: DROOLS-1998 URL: https://issues.jboss.org/browse/DROOLS-1998 Project: Drools Issue Type: Bug Components: Test Scenarios Editor Affects Versions: 5.5.0.Final Environment: Mac OS X version 10.5.8, jboss 4.2.3, jdk_1.6 Reporter: Alessandra Magenta Assignee: Toni Rikkola Labels: Test Attachments: Sales.java, SalesImpl.java, repository_export.xml If I use some Facts with a Java Interface I have an error on running Test Scenarios like: There was an error executing the consequence of rule [SalesRule] rule: SalesRule CAUSED BY [Error: unable to find constructor: Sales()] [Near : {... Unknown ....}] ^ [Line: 1, Column: 0] I have a Java class SalesImpl that implement the Sale Interface How I can resolve this error?