Junit 4 help

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Junit 4 help

by madhufuge :: Rate this Message:

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Hi All,
I am a beginner in Junit4. I need your help to write a parameterised
Junit test case. This will help me in learning Junit in a better way. I
am trying to do data-driven testing in Junit4. I am reading data from
CSV file and using it to run the test case. In the attached files I have a read CSV file that reads data from CSV file and VO file creates a array of the CSV file data. The public static Collection data() method of example1Test with the help of getter, gets the datafor the test. But When I run the testcase, I get a exception, the trace is:

java.lang.Exception: Method data()
should be void
            at
org.junit.runners.model.FrameworkMethod.validatePublicVoid(FrameworkMethod.java:90)
            at
org.junit.runners.model.FrameworkMethod.validatePublicVoidNoArg(FrameworkMethod.java:66)
            at
org.junit.runners.ParentRunner.validatePublicVoidNoArgMethods(ParentRunner.java:111)
            at
org.junit.runners.ParentRunner.collectInitializationErrors(ParentRunner.java:92)
            at
org.junit.runners.ParentRunner.validate(ParentRunner.java:253)
            at
org.junit.runners.ParentRunner.<init>(ParentRunner.java:55)
            at
org.junit.runners.Suite.<init>(Suite.java:99)
            at
org.junit.runners.Parameterized.<init>(Parameterized.java:133)
            at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
            at
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
Source)
            at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
            at
java.lang.reflect.Constructor.newInstance(Unknown Source)
            at
org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
            at
org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
            at
org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
            at
org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
            at
org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
            at
org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
            at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:29)
            at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
            at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:40)
            at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:30)
            at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
            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)

As per my understanding the Read csv
class shud be executed before the TESTCASE class only then the test data will be
available.
I understand that I need to use
@Before annotation but I do not know how to use it. I have attached the files
for your reference. The VO file has the logic to pass the csv data as array. I
have also attached the CSV jar for reading the CSV file.

Please can you help me further? What
should I write in @Before for my case to work?

Thanks,Madhavi

----------

package com;

import java.util.Iterator;
import java.util.List;

public class VO {
private String[][] dataObject;

public String[][] getDataObject() {
return this.dataObject;
}

public void setDataObject(List valueList) {
Iterator it = valueList.iterator();
String[][] dataObjectArray = null;
int i=0;
while(it.hasNext()){
String row = (String)it.next();
System.out.println("Row: "+row);
String methodName=null,remainingString=null,val1=null,remainingString1=null,val2=null,expVal=null,remainingString2=null;
String[] sTempArr=null;

//Validate Date String
sTempArr = row.split(",");
if (sTempArr.length!=2)
{

}

methodName =sTempArr[0];
val1 =sTempArr[1];
val2 = sTempArr[2];
expVal = sTempArr[3];;
dataObjectArray = new String[20][20];
if("intAdd".equalsIgnoreCase(methodName)){

dataObjectArray[i][0] = expVal;
dataObjectArray[i][1] = val1;
dataObjectArray[i][2] = val2;
}
i++;
}
this.dataObject = dataObjectArray;
}
}

[Non-text portions of this message have been removed]

Re: Junit 4 help

by David Saff :: Rate this Message:

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Madhavi,

Have you looked at the Parameters runner in JUnit 4? There's an example here:

http://weblogs.java.net/blog/fabianocruz/archive/2006/06/junit_4_you_1.html

Good luck,

David Saff

On Fri, Oct 30, 2009 at 11:17 PM, madhavi fuge <madhufuge@...> wrote:

> Hi All,
> I am a beginner in Junit4. I need your help to write a parameterised
> Junit test case. This will help me in learning Junit in a better way. I
> am trying to do data-driven testing in Junit4. I am reading data from
> CSV file and using it to run the test case. In the attached files I have a read CSV file that reads data from CSV file and VO file creates a array of the CSV file data. The public static Collection data() method of example1Test with the help of getter, gets the datafor the test. But When I run the testcase, I get a exception, the trace is:
>
>
>
> java.lang.Exception: Method data()
> should be void
>             at
> org.junit.runners.model.FrameworkMethod.validatePublicVoid(FrameworkMethod.java:90)
>             at
> org.junit.runners.model.FrameworkMethod.validatePublicVoidNoArg(FrameworkMethod.java:66)
>             at
> org.junit.runners.ParentRunner.validatePublicVoidNoArgMethods(ParentRunner.java:111)
>             at
> org.junit.runners.ParentRunner.collectInitializationErrors(ParentRunner.java:92)
>             at
> org.junit.runners.ParentRunner.validate(ParentRunner.java:253)
>             at
> org.junit.runners.ParentRunner.<init>(ParentRunner.java:55)
>             at
> org.junit.runners.Suite.<init>(Suite.java:99)
>             at
> org.junit.runners.Parameterized.<init>(Parameterized.java:133)
>             at
> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>             at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
> Source)
>             at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
> Source)
>             at
> java.lang.reflect.Constructor.newInstance(Unknown Source)
>             at
> org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
>             at
> org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
>             at
> org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
>             at
> org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
>             at
> org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
>             at
> org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
>             at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:29)
>             at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
>             at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:40)
>             at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:30)
>             at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
>             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)
>
>
> As per my understanding the Read csv
> class shud be executed before the TESTCASE class only then the test data will be
> available.
> I understand that I need to use
> @Before annotation but I do not know how to use it. I have attached the files
> for your reference. The VO file has the logic to pass the csv data as array. I
> have also attached the CSV jar for reading the CSV file.
>
> Please can you help me further? What
> should I write in @Before for my case to work?
>
> Thanks,Madhavi
>
>
>
>
> ----------
>
> package com;
>
> import java.util.Iterator;
> import java.util.List;
>
> public class VO {
> private String[][] dataObject;
>
> public String[][] getDataObject() {
> return this.dataObject;
> }
>
> public void setDataObject(List valueList) {
> Iterator it = valueList.iterator();
> String[][] dataObjectArray = null;
> int i=0;
> while(it.hasNext()){
> String row = (String)it.next();
> System.out.println("Row: "+row);
> String methodName=null,remainingString=null,val1=null,remainingString1=null,val2=null,expVal=null,remainingString2=null;
> String[] sTempArr=null;
>
> //Validate Date String
> sTempArr = row.split(",");
> if (sTempArr.length!=2)
> {
>
> }
>
> methodName =sTempArr[0];
> val1 =sTempArr[1];
> val2 = sTempArr[2];
> expVal = sTempArr[3];;
> dataObjectArray = new String[20][20];
> if("intAdd".equalsIgnoreCase(methodName)){
>
> dataObjectArray[i][0] = expVal;
> dataObjectArray[i][1] = val1;
> dataObjectArray[i][2] = val2;
> }
> i++;
> }
> this.dataObject = dataObjectArray;
> }
> }
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
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