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How to run my JUnit tests that I built in Eclipse from command line [message #1728189]

Thu, 31 March 2016 18:32

Tarik Abdallah

Messages: 3
Registered: March 2016

Junior Member

Hi,

I'm a newbie to JUnit. I have created some tests inside of eclipse and using "Run as" inside of eclipse to execute my tests.

I want to know how can I run these same tests from a command line?

Example, what are all the steps necessary?

I have set my environment variables (e.g. JAVA_HOME and JUNIT_HOME) and also added them to the classpath as well.

What else do I need to do, do I need to add the location of my bin project folder containing the .class files to the classpath or anywhere?

I tried to run the following commands:

1)
java -classpath C:\JUnit\junit-4.12.jar;C:\Users\tarik.abdallah\workspace\RentalManTests\bin\com\wynnesystems\rentalman\tests; org.junit.runner.JUnitCore OperationScreenTests

Got this error:
Exception in thread "main" java.lang.NoClassDefFoundError: OperationScreenTests (wrong name: com/wynnesystems/rentalman/tests/OperationScreenTests)

2)
c:\JUnit>java -classpath C:\JUnit\junit-4.12.jar org.junit.runner.JUnitCore OperationScreenTests

Got this error:
There was 1 failure:
1) initializationError(org.junit.runner.JUnitCommandLineParseResult)
java.lang.IllegalArgumentException: Could not find class [OperationScreenTests]
at org.junit.runner.JUnitCommandLineParseResult.parseParameters(JUnitCommandLineParseResult.java:102)
at org.junit.runner.JUnitCommandLineParseResult.parseArgs(JUnitCommandLineParseResult.java:50)
at org.junit.runner.JUnitCommandLineParseResult.parse(JUnitCommandLineParseResult.java:44)
at org.junit.runner.JUnitCore.runMain(JUnitCore.java:72)
at org.junit.runner.JUnitCore.main(JUnitCore.java:36)
Caused by: java.lang.ClassNotFoundException: OperationScreenTests
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.junit.internal.Classes.getClass(Classes.java:16)
at org.junit.runner.JUnitCommandLineParseResult.parseParameters(JUnitCommandLineParseResult.java:100)
... 4 more

I tried many things but have not had any luck... This should really be easy to do -(

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Re: How to run my JUnit tests that I built in Eclipse from command line [message #1728191 is a reply to message #1728189]

Thu, 31 March 2016 18:45

Russell Bateman

Messages: 3798
Registered: July 2009
Location: Provo, Utah, USA

Senior Member

This really isn't too much an Eclipse question, but here are some things
to think about.

1) If you're using Maven, you get this for free by typing "mvn compile
test" at the root of your project.

2) If you want to run them in Java (as it were and as you are describing
here), you will have to a) create a main() that invokes your tests and
b) a runnable JAR around that main(). This is a lot of mostly
unnecessary work and not really best industry practice.

Number (1) above is your best bet and you'll never regret learning and
beginning to use Maven whether in Eclipse, in another IDE or at the
command line.

Hope this helps.

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Re: How to run my JUnit tests that I built in Eclipse from command line [message #1728299 is a reply to message #1728191]

Fri, 01 April 2016 17:35

Eric Rizzo

Messages: 3071
Registered: July 2009

Senior Member

The first error message is giving you the answer: You must give the fully-qualified name of the class, such as com.wynnesystems.rentalman.tests.OperationScreenTests

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Re: How to run my JUnit tests that I built in Eclipse from command line [message #1728300 is a reply to message #1728191]

Fri, 01 April 2016 17:38

Eric Rizzo

Messages: 3071
Registered: July 2009

Senior Member

Russell Bateman wrote on Thu, 31 March 2016 18:45

This really isn't too much an Eclipse question, but here are some things
to think about.

1) If you're using Maven, you get this for free by typing "mvn compile
test" at the root of your project.

For the record, Gradle and Ant also provide similar convenience.

Quote:

2) If you want to run them in Java (as it were and as you are describing
here), you will have to a) create a main() that invokes your tests and
b) a runnable JAR around that main(). This is a lot of mostly
unnecessary work and not really best industry practice.

The JUnitCore class that Tarik is tryingto use is basically that.

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