StringSpec produces errors when run with spring-boot thymeleaf dependency in Intellij Idea

[TheNewBob]

In short, a test with StringSpec produces a gazillion errors if you have spring-boot-starter-thymeleaf in your dependencies. You don't have to actually use it, just have the dependency in the project.

Here is a minimal project setup that will reproduce the issue in IntelliJ IDEA when you run the included test. Reproduction instructions are there also, as well as in the links further below:
https://github.com/TheNewBob/kotlin-test-thymeleaf

I have asked about the issue on stackoverflow. Somebody recommended to report the issue to Jetbrains, which I did, and they concluded that the source of the problem is most likely in kotlintest. It seems a bit strange, since the problem does not happen when doing gradlew test instead of running it in Intellij.

[sksamuel]

Which version of KotlinTest are you using ?

[TheNewBob]

The project on Github pulls 3.0.6.

[sksamuel]

Thanks I'll take a look at this now.

[sksamuel]

There's no such dependency as testCompile 'io.kotlintest:kotlintest:3.0.6'.

[sksamuel]

It seems ok if you change the dependency to:

testCompile 'io.kotlintest:kotlintest-runner-junit5:3.0.6'

And add in

apply plugin: 'org.junit.platform.gradle.plugin'

And in the buildscript add

classpath "org.junit.platform:junit-platform-gradle-plugin:1.1.0"

The upcoming 3.1.0 release will simplify this if you use gradle 4.6+

[TheNewBob]

There's no such dependency as testCompile 'io.kotlintest:kotlintest:3.0.6'.

Really sorry about that. I was running 2.0.7 before writing the issue report, realised there was a new version and just updated the version number and tested. For some reason the test ran, probably wasn't done rebuilding yet.

Looks like just pulling 'io.kotlintest:kotlintest-runner-junit5:3.0.6' fixes the issue now that I get around to trying again.

[sksamuel]

The error you were getting was definitely something that happened in version 2 so yes I think this issue is fixed by just upgrading. I'll close.