Improved: Unit test case for service - CheckPaymentAmountForRefund.

(OFBIZ-8852)
Thanks Avnindra Sharma for reporting the issue and Yogesh Naroliya for providing the patch.

git-svn-id: https://svn.apache.org/repos/asf/ofbiz/ofbiz-framework/trunk@1860000 13f79535-47bb-0310-9956-ffa450edef68

applications/order/groovyScripts/test/OrderTests.groovy

@@ -50,4 +50,12 @@ class OrderTests extends GroovyScriptTestCase {
         assert ServiceUtil.isSuccess(serviceResult)
         assert serviceResult.statusId != null
     }
+
+    void testCheckPaymentAmountForRefund() {
+        Map serviceCtx = [:]
+        serviceCtx.returnId = '1009'
+        serviceCtx.userLogin = EntityQuery.use(delegator).from('UserLogin').where('userLoginId', 'system').cache().queryOne()
+        Map serviceResult = dispatcher.runSync('checkPaymentAmountForRefund', serviceCtx)
+        assert ServiceUtil.isSuccess(serviceResult)
+    }
 }