JUnit Tutorial

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JUnit, a popular unit test framework in Java. In this tutorials, all examples are tested with JUnit 4.12

1. JUnit 4.x Examples

References

  1. JUnit Official site
  2. Wikipedia – JUnit

About the Author

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mkyong
Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

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Sky
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Sky

Thank you!

Ajay
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Ajay

sir, i installed junit 5 it shows an error. eclipse also shows an error . Java jre and java se is not installing only document is there. one website shows Java SE. Which software will work in Windows. Linux and macintosh are not installing in Windows. is there any software with no errors.

test
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test

nice

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basha
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basha

how can write test cases for the private method using junit test3.2

arthy
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arthy

Hi Yong, Could you provide some pointers for adding methods(not class level) to a test suite in JUNIT4..?

srini
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srini

how to make the immutable class ? give me example?

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[…] JUnit – tutorial – vogella […]

srinivas
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srinivas

hi can anybody help me on an issue with XMLParameterizedRunner in JUnit4.8 i am getting the following error java.lang.NoSuchMethodError: org.junit.internal.runners.MethodValidator.(Ljava/lang/Class;)V at org.junit.internal.runners.TestClassRunner.(TestClassRunner.java:26) at org.junitext.runners.XMLParameterizedRunner.(Unknown Source) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 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.(JUnit4TestReference.java:32) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.(JUnit4TestClassReference.java:25) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:41) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:31) 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) and the java code is package concurrent; import java.net.URL; import org.junit.Test; import org.junit.runner.RunWith; import org.junitext.XMLParameters; import org.openqa.selenium.By; import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.remote.RemoteWebDriver; import org.junitext.runners.XMLParameterizedRunner; @RunWith(XMLParameterizedRunner.class) public class One_inTwo { public String browser1; @XMLParameters("/concurrent/One_inTwo1.xml") public One_inTwo(String… Read more »

bijay kumar
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bijay kumar

hi mkyong,
plz provide Tapestry tutorial….

bijay kumar
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bijay kumar

hi mkyong,
plz provide Tapestry & Adobe Flex tutorial….

Ravi Kant Soni
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Ravi Kant Soni

hi Monk, here is the here which i am getting while UNIT Test for “https” url.
Plz help me as soon as possible.

SSLUnsubscribes exception…..

nityananda
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nityananda

please provide tapestry tutorial…..soon.

Sumesh
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Sumesh

This tutorial is really nice. But if you want to overcome some of the major limitations of junit 3 and junit 4 have a look at the below mentioned link which tells how to use effectively use junit for functional testing.
http://apitestingwithjunit.blogspot.in/

sruthi
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sruthi

i need to display message in jsp from servlets.but im getting null value after loading jsp page..can i please get the solution for this

P singh
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P singh

can you tell me how to embed multi test case in one file
i means can we write two test() function in one file to test two different function.
thanks

P singh
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P singh

can you tell me how to embed multiple test case in one file
i means can we write two test() function in one file to test two different function.
thanks

Mohit
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Mohit

For more tutorials on features like Categories, test suites, hamcrest and recommended junit books, read : JUnit tutorials

Anant
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Anant

Hi, can you please explain all the methods like as setUp() & tearDown(),
means what are the significance of these method and how to be use using spring?

Jefferson_P_Thomas
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Jefferson_P_Thomas

Junit Tutorials Series On Techno Nutty Junit Tutorials Series

asrabanu bagvan
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asrabanu bagvan

Hi yong,
Can u please provide me the guide for deploying enterprise applications in ibm websphere application server 8.5.
And how to create profile,http port and etc

paramesh
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paramesh

I want to ensure whether my method successfully executed or not in Junit. Is
there any way to test?

paramesh
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paramesh

Please anyone give me the suggestion as soon as possible bcaz I am stucking in that long time

Sujeesh
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Sujeesh

These tutorials are really helpful. Thank you Mkyong.

my Test
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my Test

Minimalist and useful
Thank you