Configuring IntelliJ IDEA for unit testing with JUnit

Question

I decided to try out IntelliJ this morning via the trial version and installed the JUnit plugin  I made a new Java project and I want to write a test case for it   How do I add the junit jar file to my project   I actually want to add it to every java project  now and forever more - is there a way of doing that

User · Answer

One way of doing this is to do add junit.jar to your $CLASSPATH as an external dependency.

So to do that, go to project structure, and then add JUnit as one of the libraries as shown in the gif.

In the 'Choose Modules' prompt choose only the modules that you'd need JUnit for.

User · Answer

Press Ctrl Shift T in the code editor  It will show you popup with suggestion to create a test    Mac OS    Cmd Shift T

User · Answer

If you already have a test class  but missing the JUnit library dependency  please refer to Configuring Libraries for Unit Testing documentation section  Pressing Alt Enter on the red code should give you an intention action to add the missing jar   However  IDEA offers much more  If you don t have a test class yet and want to create one for any of the source classes  see instructions below   You can use the Create Test intention action by pressing Alt Enter while standing on the name of your class inside the editor or by using Ctrl Shift T keyboard shortcut   A dialog appears where you select what testing framework to use and press Fix button for the first time to add the required library jars to the module dependencies  You can also select methods to create the test stubs for       You can find more details in the Testing help section of the on-line documentation

User · Answer

If you already have test classes you may   1  Put a cursor on a class declaration and press Alt   Enter  In the dialogue choose JUnit and press Fix  This is a standard way to create test classes in IntelliJ   2  Alternatively you may add JUnit jars manually  download from site or take from IntelliJ files

User · Answer

In my case  IntelliJ 2020-02  Kotlin dev  JUnit library was already included by Create project wizard  I needed to enable JUnit plugin   to get green Run test icons next to each test class and method   and CTRL Shift R will run test under caret  and CTRL shift D to debug

[unit-testing] Configuring IntelliJ IDEA for unit testing with JUnit

Examples related to unit-testing

Examples related to junit

Examples related to intellij-idea