MissingPropertyException while running unit tests for Grails service class

I am writing unit test cases for my Service Class. Below is my code in controller:

TuneController

def list = {

}

def listData= {

    playerId="6600AE"
    def tuneInstanceList = new ArrayList<Tune>()


    tuneInstanceList = tuneService.calculateId(String playerId)


    def editResult = [total: tuneInstanceList.size(), items: tuneInstanceList]


    render editResult as JSON;
}

Below is my code in TuneService: The below method is called from listData action. ListData is mentioned in my js file test.js

List<Tune> calculateId(String playerId) {             

   try{
   //read the sql file 
        String playerSql = grailsApplication.mainContext.getResource('classpath:' +         Constants.PLAYER_FILE).inputStream.text 

    def sql = new groovy.sql.Sql(dataSource)                 

    def params = [playerId:playerId] 
    def tuneInstanceList = new ArrayList<Tune>() 

    def results = sql.rows(playerSql, params) 

    tuneInstanceList = results.each { 
        def tune = new Tune() 
        tune.setPlayerId  it.player_id   
        tuneInstanceList.add tune
    }
    return tuneInstanceList

}catch (Exception ex) {
        log.error ex.message, ex
        throw ex
    }
    //finally {
        //sql.close()
    //}
}

PLAYER_FILE.sql has the below data. This file is present in grails-app/sql/PLAYER_FILE.sql

select player_Id from tunes where player_Id=:playerId

Test.js:

Ext.onReady(function(){ 

// create the Data Store 
var ds = new Ext.data.Store({ 
   autoLoad: true, 
   proxy: new Ext.data.HttpProxy({ 
   url: 'http://localhost:8080/mu开发者_如何学Pythonsic/tune/listData'}), 
   reader: new Ext.data.JsonReader({ 
    results: 'total', 
    root:'items', 
    id:'id' 
   }, 
   [ 
           {name: 'playerId' } 

      ] 
   ) 
}); 

var cm = new Ext.grid.ColumnModel([ 
    {header: "Player Id", width: 120, dataIndex: 'playerId' }, 

]); 
cm.defaultSortable = true; 

// create the grid 
var grid = new Ext.grid.GridPanel({ 
    ds: ds, 
    cm: cm, 
    renderTo:'grid-example', 
    width:540, 
    height:200 
});    });

Below is the test that I wrote for my service class. Here I am getting the missing prperty exception. I believe this is for the line "def sql = new groovy.sql.Sql(dataSource)". This is what is mentioned in the exceptions. Its reg. this sql. Here in my test, I have to mention the datasource or mock the datasource. I am not too sure though.

My test case is below:

void testReturnList() {          
    TuneService tuneService = new TuneService()     
    List tuneList = tuneService.calculateId()  
    assertTrue(tuneList.size()>0)   
} 

groovy.lang.MissingPropertyException: No such property: sql for class: pride.TuneService Possible solutions: log at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:49) at org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:86) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:241) at pride.TuneService.calculateId(TuneService.groovy:67) at pride.TuneService$calculateId.call(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117) at pride.TuneServiceTests.testReturnList(TuneServiceTests.groovy:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at junit.framework.TestCase.runTest(TestCase.java:168) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at junit.framework.TestSuite.runTest(TestSuite.java:232) at junit.framework.TestSuite.run(TestSuite.java:227) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

EDITED: Below is the error that I get after commenting sql.close()

java.lang.NullPointerException: Cannot get property 'mainContext' on null object at org.codehaus.groovy.runtime.NullObject.getProperty(NullObject.java:56) at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:156) at org.codehaus.groovy.runtime.callsite.NullCallSite.getProperty (NullCallSite.java:44) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty (AbstractCallSite.java:237) at pride.TuneService.calculateId(TuneService.groovy:37) at pride.TuneService$calculateId.call(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117) at pride.TuneServiceTests.testReturnList(TuneServiceTests.groovy:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at junit.framework.TestCase.runTest(TestCase.java:168) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at junit.framework.TestSuite.runTest(TestSuite.java:232) at junit.framework.TestSuite.run(TestSuite.java:227) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

How do I go about writing this test case. Thoughts?

---

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?