No JUnit tests found in Eclipse

Question

So I m new to JUnit  and we have to use it for a homework assignment  Our professor gave us a project that has one test class  BallTest java  When I right click   Run as   JUnit Test  I get a popup error that says  No JUnit tests found   I know the question has been answered here No tests found with test runner   39 JUnit 4  39    but closing eclipse  restarting  cleaning  and building doesn t seem to work  Below are screenshots of my run configuration  build path  and the class I m trying to test      BallTest java  import static org junit Assert    import junit framework Assert  import org junit After  import org junit Before  import org junit Test  import org junit runner JUnitCore   import org junit runner Result   import org junit runner notification Failure    public class BallTest    Ball ball           throws java lang Exception      Before public void setUp   throws Exception       System out println  Setting up            Point2D p   new Point2D 0 0       ball   new Ball p              throws java lang Exception      After public void tearDown   throws Exception       System out println  Tearing down            ball   null            Test method for   link Ball getCoordinates          Test public void testGetCoordinates         assertNotNull ball      don t need Assert  because of the import statement above      Assert assertEquals ball getCoordinates   getX    0       Assert assertEquals ball getCoordinates   getY    0             Test method for   link Ball setCoordinates Point2D         Test public void testSetCoordinates         Assert assertNotNull ball       Point2D p   new Point2D 99 99       ball setCoordinates p       Assert assertEquals ball getCoordinates   getX    99       Assert assertEquals ball getCoordinates   getY    99             Test method for   link Ball Ball Point2D         Test public void testBall         Point2D p   new Point2D 49 30       ball   new Ball p       Assert assertNotNull ball       Assert assertEquals ball getCoordinates   getX    49       Assert assertEquals ball getCoordinates   getY    30          fail  Not yet implemented       public static void main  String   args             Result result   JUnitCore runClasses BallTest class            for  Failure failure   result getFailures                       System out println failure toString                             System out println result wasSuccessful

User · Answer

right click -  build path -  remove from build path  and then again add it -  Right click on the folder named  Test    Build Path   Use as Source Folder

User · Answer

Any solution didn t work for me until I change the name of the my test method  When name of test method starts with  test  is OK  I am new in android programing and it was for me big surprise

User · Answer

I had the same problem and solved like this  I deleted  Test annotation and retyped it  It just worked  I have no idea why

User · Answer

In Eclipse Photon you may need to add JUnit 4 or 5 to the build path   Right click  Test and select  Add JUnit 4 to build path

User · Answer

I was using  RunWith Parameterized class  but missed to add the  Parameters annotation in the public static parameters method  After adding the annotation it worked

User · Answer

Try this  Right Click on the Unit Test Class     Select  Run As  -  Run Configuration In the  Test  tab  make sure in the field  Test runner  select drop down  JUnit 4  Click  Apply    Now Run the test

User · Answer

Came across this problem while upgrading projects across eclipse versions  For e g  junits running well in Mars2 0 did not run on Neon  The following worked for me    Delete  settings folder  Import project into eclipse   Remove source folders  Then again use the folders as source folders  e g - remove src main java from build path as source folder  -  Ok -  Again make this folder as source folder  Repeat it for main resources  test java  test resources

User · Answer

Right click your project - Properties- Java Build Path and go to Source Tab then add your test src folder  Select Project menu and unselect  Build Automatically  option if selected Select Clean and then select  Build Automatically  option Restart Eclipse and run your junit

User · Answer

Sometimes  it occurs when you add Junit Library in Module path  So  Delete it there and add in Class path

User · Answer

The run configuration for a test class can create another cause  and solution  for this problem   If you go to Run  or Debug  Configurations  using cmd-3 or clicking on the small dropdown buttons in the toolbar  you can see a configuration created for every test class you ve worked with   I found that one of my classes that wouldn t launch had a run configuration where the Test Method field had somehow gotten inadvertently populated   I had to clear that to get it to work   When cleared it shows  all methods  in light text   I ll add that strangely     maybe there was something else going on     it also seemed not to work for me until I fixed the  Name  field as well so that it included only the class name like the other JUnit run configurations

User · Answer

I solved the problem by configuring the build path  Right click on the project or any of the subfolders -  Build path -  Configure build path  Once the property window opens up  click on the  Source  tab and add your src and tst folders  But this alone did not work for me   Strangely  I had to retype the annotations  Project- clean or restart might also have worked though

User · Answer

If none of the other answers work for you  here s what worked for me   Restart eclipse  I had source folder configured correctly  and unit tests correctly annotated but was still getting  No JUnit tests found   for one project  After a restart it worked  I was using STS 3 6 2 based of eclipse Luna 4 4 1

User · Answer

Right Click on Project   Properties   Java Build Path   Add the Test folder as source folder   All source folders including Test Classes need to be in Eclipse Java Build Path  So that the sources such as main and test classes can be compiled into the build directory  Eclipse default folder is bin

User · Answer

Right Click on Project   Properties   Java Build Path   Libraries    select  classpath -  add Library -  Junit -   select junit version -  finish -  applay

User · Answer

I think you have created your test classes outside the src folder  You can solve above problem by two way    Add your package name in java build path- gt source Move your package class in src folder   I have the same problem and solved in this way both solutions working fine

User · Answer

The solution was  after making a backup of the src test folder  removing it from the filesystem  then creating it again   That s after I did the  Remove from build path  hint and it screwed the folders when opening the project in STS 4

User · Answer

I had this problem too with JUnit 5 4 2  I use Eclipse 2019-09 with gradle 5 3 1   So I had to add this two dependencies to build gradle file with right  configuration for it  testImplementation and testRuntimeOnly    apply plugin   java     enabled the Gradle   s native JUnit 5 support   test       useJUnitPlatform         testImplementation  group   org junit jupiter   name   junit-jupiter-api   version     junitVer   testRuntimeOnly group   org junit jupiter   name   junit-jupiter-engine   version     junitVer

User · Answer

Click  Run - gt choose your JUnit- gt in  Test Runner  select the JUnit version you want to run with

User · Answer

It looks like you re missing the runner definition on your test class  that could be the cause   import org junit runners JUnit4   RunWith JUnit4 class  public class BallTest

User · Answer

Some time if lots if Test files are there then Eclipse failed to pass -classpath options for all libs and path due to classpath param lenght limitations   To Solve it go to Run   Configerations - gt  JUnit - gt  Your Project Config - gt  ClassPath - gt  Check  Use Temporary Jar Options    At least it solved my problem

User · Answer

The best way to resolve this issue is to put public Access modifier for your Junit Test Case class name and then run the scenario by right click on your Junit test case class and run as Junit Test

User · Answer

junit4 require that test classname should be use Test as suffix

[java] 'No JUnit tests found' in Eclipse

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