"Test events were not received" when run tests using Intellij

I have a Kotlin project and when I run my JUnit tests, I can't see tests execution result in IntelliJ and get this message instead:

> test events were not received

I'm using this setup:

macOS Mojave

Intellij CE 2019.2

JDK 11.0.3

Kotlin 1.3.50

Gradle 5.2.1

JUnit 4.12

Can you help me?

Update to [2019.2.2](

[To see links please register here]

) or later, which contains the fix for the [related issue](

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).

A workaround is to run the tests using IntelliJ IDEA instead of Gradle by changing the [delegation option](

).

For anyone that is still facing this -
check if you have any compiler errors in the `Build` tab.

For me, the Same issue was occurring, below changes worked for me.
IntelliJ Version I am using: 2019.2.2
In IntelliJ IDE, Go to

File -> Settings ->Build,Execution, Deployment -> Build Tools -> Gradle

here in the `Run test using:` dropdown selected option was: `Gradle(default)` changed it to `IntelliJ IDEA`

[![][1]][1]

[1]:

I was using facing the same issue even using IntelliJ IDEA 2019.2.4 (top answer said this was fixed on 2019.2.2). Turns out I had to `Invalidate Caches / Restart...` before trying.

When trying to work out this problem for myself, I discovered JUnit 4 worked, but JUnit 5 reports "Tests were not received." Per [petrikainulainen.net][1] I found my solution.

> Even though Gradle 4.6 (and obviously all newer versions) has a native
> support for JUnit 5, this support is not enabled by default. If we
> want to enable it, we have to ensure that the test task uses JUnit 5
> instead of JUnit 4.

When I added the following code to Gradle, JUnit 5 worked.

test {
useJUnitPlatform()
}


[1]:

[To see links please register here]

For me, this is helpful to click "Help -> Check for Updates..."

[Help -> Check for Updates...][1]


[1]:

)

The problem occurred as I used both following plugins at the same time

plugins
{
id 'org.springframework.boot' version '2.2.6.RELEASE'
id 'io.spring.dependency-management' version '1.0.7.RELEASE'
...
}

after deletion of the second one, the tests were found and executed.

I often have to delete build and out folder to fix this problem ..

**Answer**

I know of some issues that occur when running Gradle together with the newest JDK versions (13 & 14). If you selected either version 13 or 14 of the JVM as the Gradle JVM try using either 8 or 11.

Switch the Gradle JVM to version 11:

`File -> Settings -> Build Execution, etc -> Built Tools -> Gradle -> Gradle JVM`

**Explanation**

I believe that by default Intellij will use the project SDK:

`Project strcuture -> Project -> Project SDK`

I've had this on several occasions now and picking version 11 of the JVM fixed things for me.

Worth noting is that for most of my project I'm using:
- Lombok
- Jackson
- Lombok plugin (Require annotation processing to be enabled)

I don't remember where I read it but I believe there were some issues with the lombok plugin + gradle + JVM version. I might revisit this answer if I can remember where I found the post about it.