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MissingPropertyException while running unit tests for Grails service class

Answer 1

A:

I don't think you've given us the right code to help you debug this error. If you examine the stack trace more closely, you'll see where the "missing property" is:

at pride.RecoveryService.calculateImpact(RecoveryService.groovy:67)

Have a look at that line. It's likely that you're referring to a property called sql that hasn't been defined for the method/closure/class.

Edit:

After your update, I see at least one problem:

String sql = grailsApplication.mainContext.getResource('classpath:' + Constants.PLAYER_FILE).inputStream.text 
def sql = new groovy.sql.Sql(dataSource)

You're defining sql twice here as different types. I only point that out because your stack trace seems to be related to that variable.

Can you point out which line is line in TuneService.groovy is line 67?

Rob Hruska 2010-10-21 13:21:49

Also, have a look at http://stackoverflow.com/questions/3988788/what-is-a-stack-trace-and-how-can-i-use-it-to-debug-my-application-errors to see how to read that stack trace.

Rob Hruska 2010-10-21 15:05:16

Updated my code. Inputs?

Alex 2010-10-21 18:26:41

I had a finally block in my code which read sql.close(). That was the line number 67. Do not know why that was giving an error, because it works fine whne i run the app otherwise. And as u said, I changed the sql def dtaht was defined twice. Now when I run it I get another error which corresponds to line 37 which is String sql = grailsApplication.mainContext.getResource('classpath:' + Constants.PLAYER_FILE).inputStream.text Do u think I have written my tests fine?

Alex 2010-10-22 03:48:35

After your update it looks like `grailsApplication` is null in your code. I'm not sure that `grailsApplication` is available to services, and I'm not entirely sure how to access its information otherwise.

Rob Hruska 2010-10-22 04:25:10

If I run my application with this code, it runs fine and I get the desired output. Do you think it has something to do with mocking?I mean is it that my Unit tests are unable to access the .sql file in grails-app folder? Do u think my unit tests are missing something?

Alex 2010-10-22 04:41:33

Well, if it's a unit test it's doubtful that `grailsApplication` would be available. `grailsApplication` might be available if you were to write the test as an integration test, though. Unit tests don't get any of the dynamic properties that are normally available at runtime.

Rob Hruska 2010-10-22 11:47:50

Thanks Rob. Is there any way grailsApplication can be kept available in Unit Tests?

Alex 2010-10-25 09:52:32

Well, it wouldn't really make sense. You'd have to mock it out in an unit test. If you need it to exist for your test, you should use an integration test instead, since that's what they're for (providing the application context).

Rob Hruska 2010-10-25 11:59:18

Thanks Rob for your inputs. Integration Test seems to be the right way out. I have written the Integration Test and since its a different code , I have put it as a separate question. "Integration Test with JSON output" is the subject Link: http://stackoverflow.com/questions/4020880/integration-test-with-json-output

Alex 2010-10-26 05:47:15

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MissingPropertyException while running unit tests for Grails service class

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