Seeing "loading VS model document null" exception while opening a VSM or test case.

Products

• CA Application Test
• Service Virtualization
• CA Continuous Application Insight (PathFinder)

Issue/Introduction

Trying to open a virtual service model (VSM) in the Workstation and getting the following error:

loading VS model document null. 

full stacktrace: 

java.lang.NullPointerException 

at java.util.zip.Inflater.setInput(Unknown Source) 

at com.itko.util.BinaryUtil.decompressZlib(BinaryUtil.java:98) 

at com.itko.util.StrUtil.decompressZlib(StrUtil.java:928) 

at com.itko.lisa.vse.stateful.model.PLCarrier.getParameterList(PLCarrier.java:89) 

at com.itko.lisa.vse.stateful.model.Request.getArguments(Request.java:181) 

at com.itko.lisa.vse.stateful.model.Request.toString(Request.java:645) 

at com.itko.lisa.vse.stateful.model.Request.getPropertyText(Request.java:670) 

at com.itko.util.properties.PropertyUtils.getStringForProperty(PropertyUtils.java:47) 

at com.itko.lisa.test.TestExec.getStringValue(TestExec.java:1542) 

at com.itko.lisa.test.TestExec.setStateValue(TestExec.java:1500) 

at com.itko.lisa.test.TestExec.saveNodeResponse(TestExec.java:974) 

at com.itko.lisa.editor.TestNodeInfo.setRet(TestNodeInfo.java:770) 

at com.itko.lisa.editor.TestCaseInfo.loadResults(TestCaseInfo.java:1364) 

at com.itko.lisa.editor.TestCaseEditor$2.doCallback(TestCaseEditor.java:400) 

at com.itko.util.swing.panels.ProcessingDialog$2.run(ProcessingDialog.java:194) 

at java.lang.Thread.run(Unknown Source)

Cause

When a VSM or a test case interacts with server, the responses are saved to a response document so the information is available later.

The response documents are created and maintained automatically. They are saved as files with a test case or VSM file name and an .rsp extension.

If for some reason this rsp file is corrupted, you may be unable to open a test case or a VSM.

Environment

All supported DevTest releases

Resolution

Delete the .rsp file related to a VSM or a test case that you are trying to open.