How to run JUnit test cases from the command line

Question

I would like to run JUnit test cases from the command line  How can I do this

User · Answer

Actually you can also make the Junit test a runnable Jar and call the runnable jar as java -jar

User · Answer

Alternatively you can use the following methods in JunitCore class http   junit sourceforge net javadoc org junit runner JUnitCore html  run  with Request   Class classes and Runner  or runClasses  from your java file

User · Answer

Personally I would use the Maven surefire JUnit runner to do that

User · Answer

The answer that  lzap gave is a good solution  However  I would like to add that you should add   to the class path  so that your current directory is not left out  resulting in your own classes to be left out  This has happened to me on some platforms  So an updated version for JUnit 4 x would be   java -cp    usr share java junit jar org junit runner JUnitCore  test class name

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Maven way  If you use Maven  you can run the following command to run all your test cases   mvn clean test   Or you can run a particular test as below  mvn clean test -Dtest your package TestClassName mvn clean test -Dtest your package TestClassName particularMethod   If you would like to see the stack trace  if any  in the console instead of report files in the target surefire-reports folder  set the user property surefire useFile to false  For example   mvn clean test -Dtest your package TestClassName -Dsurefire useFile false   Gradle way  If you use Gradle  you can run the following command to run all your test cases   gradle test   Or you can run a particular test as below  gradle test --tests your package TestClassName gradle test --tests your package TestClassName particularMethod   If you would like more information  you can consider options such as --stacktrace  or --info  or --debug    For example  when you run Gradle with the info logging level --info  it will show you the result of each test while they are running  If there is any exception  it will show you the stack trace  pointing out what the problem is   gradle test --info   If you would like to see the overall test results  you can open the report in the browser  for example  Open it using Google Chrome in Ubuntu    google-chrome build reports tests index html   Ant way  Once you set up your Ant build file build xml  you can run your JUnit test cases from the command line as below   ant -f build xml  lt Your JUnit test target name gt    You can follow the link below to read more about how to configure JUnit tests in the Ant build file   https   ant apache org manual Tasks junit html  Normal way  If you do not use Maven  or Gradle or Ant  you can follow the following way   First of all  you need to compile your test cases  For example  in Linux    javac -d  absolute path for compiled classes -cp  absolute path to junit-4 12 jar  absolute path to TestClassName java   Then run your test cases  For example   java -cp  absolute path for compiled classes  absolute path to junit-4 12 jar  absolute path to hamcrest-core-1 3 jar org junit runner JUnitCore your package TestClassName

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Ensure that JUnit jar is in your classpath  then invoke the command line runner from the console     java org junit runner JUnitCore  test class name    Reference  junit FAQ

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In windows it is   java -cp    path junit jar org junit runner JUnitCore TestClass  test class name without  class extension   for example   c   gt java -cp   f  libraries junit-4 8 2 org junit runner JUnitCore TestSample1 TestSample2     and so on  if one has more than one test classes   -cp stands for class path and the dot     represents the existing classpath while semi colon     appends the additional given jar to the classpath   as in above example junit-4 8 2 is now available in classpath to execute JUnitCore class that here we have used to execute our test classes   Above command line statement helps you to execute junit  version 4   tests from command prompt i-e MSDos    Note  JUnitCore is a facade to execute junit tests  this facade is included in 4  versions of junit

User · Answer

For JUnit 5 x it s   java -jar junit-platform-console-standalone- lt version gt  jar  lt Options gt    Find a brief summary at https   stackoverflow com a 52373592 1431016 and full details at https   junit org junit5 docs current user-guide  running-tests-console-launcher  For JUnit 4 X it s really   java -cp    usr share java junit jar org junit runner JUnitCore  test class name    But if you are using JUnit 3 X note the class name is different   java -cp    usr share java junit jar junit textui TestRunner  test class name    You might need to add more JARs or directories with your class files to the classpath and separate that with semicolons  Windows  or colons  UNIX Linux   It depends on your environment   Edit  I ve added current directory as an example  Depends on your environment and how you build your application  can be bin  or build  or even my application jar etc   Note Java 6  does support globs in classpath  you can do   java -cp lib   jar  usr share java junit jar       Hope it helps  Write tests   -

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If your project is Maven-based you can run all test-methods from test-class CustomTest which belongs to module  my-module  using next command   mvn clean test -pl  my-module -Dtest CustomTest   Or run only 1 test-method myMethod from test-class CustomTest using next command   mvn clean test -pl  my-module -Dtest CustomTest myMethod   For this ability you need Maven Surefire Plugin v 2 7 3  and Junit 4  More details is here  http   maven apache org surefire maven-surefire-plugin examples single-test html

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With JUnit 4 12 the following didn t work for me   java -cp    usr share java junit jar org junit runner JUnitCore  test class name    Apparently  from JUnit 4 11 onwards you should also include hamcrest-core jar in your classpath   java -cp    usr share java junit jar  usr share java hamcrest-core jar org junit runner JUnitCore  test class name

[unit-testing] How to run JUnit test cases from the command line

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