Index: branches/features/purchaseOrders/test/unit/com/henyo/BaseUnitTestCase.groovy
===================================================================
--- branches/features/purchaseOrders/test/unit/com/henyo/BaseUnitTestCase.groovy	(revision 916)
+++ branches/features/purchaseOrders/test/unit/com/henyo/BaseUnitTestCase.groovy	(revision 916)
@@ -0,0 +1,39 @@
+package com.henyo
+
+import grails.test.GrailsUnitTestCase
+import org.springframework.transaction.TransactionStatus
+
+/**
+ * Base unit test class with mock extensions.
+ * http://blog.henyo.com/2009/04/mocking-transactions-for-unit-testing.html
+ */ 
+class BaseUnitTestCase extends GrailsUnitTestCase {
+
+    def statusControls
+
+    protected void setUp() {
+        super.setUp()
+        statusControls = []
+    }
+
+    protected void tearDown(){
+        statusControls.each{
+            it.verify()
+        }
+        statusControls.clear()
+        super.tearDown()
+    }
+
+    def mockForTransaction(Class clazz,boolean expectRollback = false){
+        registerMetaClass(clazz)
+        def statusControl = mockFor(TransactionStatus)
+        statusControls << statusControl
+        if(expectRollback)
+            statusControl.demand.setRollbackOnly(1..1) { println 'setRollbackOnly called'}
+        def status = statusControl.createMock()
+        clazz.metaClass.'static'.withTransaction = {
+            Closure callable ->  callable.call(status)
+        }
+        return statusControl
+    }
+}