JUnit Tutorial

JUnit is the most famous unit test framework in Java. However it is only suitable for pure unit testing, for integration test, you should go for TestNG instead.

Happy learn JUnit :)

JUnit 4.x Tutorials

Tutorial 1 – Basic usage
Introduces basic annotation supported in Junit 4.
Tutorial 2 – Expected Exception Test
Test the exception throw by the method.
Tutorial 3 – Ignore Test
Ignore certain method for unit test.
Tutorial 4 – Time Test
Make sure the testing method will return after certain time.
Tutorial 5 – Suite Test
Bundle a few unit test cases and run it together.
Tutorial 6 – Parameterized Test
How do pass parameter value for unit test.

JUnit Vs TestNG

JUnit 4 Vs TestNG – Comparison
Detail feature comparison between JUnit 4 and TestNG.

mkyong

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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 browser1) { this.browser1=browser1; } @Test public void test() throws Exception { WebDriver driver; URL server = new URL("http://localhost:8081/wd/hub"); DesiredCapabilities capabilities = null; driver = new RemoteWebDriver(server, Common.getGridsettings(browser1, capabilities)); driver.get("http://google.com"); Thread.sleep(3000); WebElement search_editbox = driver.findElement(By.name("q")); WebElement search_button = driver.findElement(By.name("btnG")); search_editbox.clear(); search_editbox.sendKeys("first"); search_button.click(); driver.quit(); } }

<?xml version="1.0" encoding="UTF-8" ?> <tests> <test> <string id="browser1" value="firefox" /> </test> <test> <string id="browser1" value="IE" /> </test> </tests>

sruthi April 9, 2013 at 7:01 pm
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
Sumesh December 19, 2012 at 2:48 pm
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/
Sujeesh December 12, 2012 at 5:02 pm
These tutorials are really helpful. Thank you Mkyong.
nityananda November 27, 2012 at 10:27 pm
please provide tapestry tutorial…..soon.
Ravi Kant Soni October 19, 2012 at 2:58 pm
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…..
bijay kumar October 11, 2012 at 4:13 pm
hi mkyong,
plz provide Tapestry & Adobe Flex tutorial….
bijay kumar October 11, 2012 at 4:11 pm
hi mkyong,
plz provide Tapestry tutorial….
srinivas August 1, 2012 at 6:11 pm
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 browser1) { this.browser1=browser1; } @Test public void test() throws Exception { WebDriver driver; URL server = new URL("http://localhost:8081/wd/hub"); DesiredCapabilities capabilities = null; driver = new RemoteWebDriver(server, Common.getGridsettings(browser1, capabilities)); driver.get("http://google.com"); Thread.sleep(3000); WebElement search_editbox = driver.findElement(By.name("q")); WebElement search_button = driver.findElement(By.name("btnG")); search_editbox.clear(); search_editbox.sendKeys("first"); search_button.click(); driver.quit(); } }
and the xml code is
<?xml version="1.0" encoding="UTF-8" ?> <tests> <test> <string id="browser1" value="firefox" /> </test> <test> <string id="browser1" value="IE" /> </test> </tests>
srini June 12, 2012 at 5:45 pm
how to make the immutable class ? give me example?
- Githin June 28, 2012 at 7:58 pm
  Make class Final.
  make data and methods too final and static.
  - Raman Kumar August 1, 2012 at 2:43 pm
    yes… use the final keyword before class name…
arthy June 12, 2012 at 2:54 pm
Hi Yong, Could you provide some pointers for adding methods(not class level) to a test suite in JUNIT4..?
basha March 27, 2012 at 8:05 pm
how can write test cases for the private method using junit test3.2
- mkyong March 27, 2012 at 8:11 pm
  Unit test unable to test private method.
- Angel June 15, 2012 at 3:20 am
  It is possible to test private methods in your class by different ways. An alternative solution could be to use/implement Java Reflection API.Something like this :
  Method theMethod = targetClass.getDeclaredMethod(methodName, argClasses);
  theMethod.setAccessible(true);
  return theMethod.invoke(targetObject, argObjects);
  Or take a look at this http://code.google.com/p/powermock/wiki/BypassEncapsulation
  good luck:)
Sky August 5, 2010 at 4:30 pm
Thank you!
test July 30, 2010 at 4:07 pm
nice

JUnit Tutorial

JUnit 4.x Tutorials

JUnit Vs TestNG

Popular Posts

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JUnit 4.x Tutorials

JUnit Vs TestNG

Related Posts

Popular Posts

What is your opinion?

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