Support system properties through classpath based file

Kotest 4.3.1 Kotest IDEA Plugin 1.1.22-IC-2020.1

Not sure if I should have posted this bug in the Kotest plugin repo or here.

I have a scenario where I want to inject sensitive information in a test for an end 2 end test.
Adding my sensitive information in Gradle by reading local.properties file and setting it as a system property.

I can then retrieve it in my tests by quering the System.getProperty.
This works if I run the test in the command line. ./gradlew test but are not added when I run them from IntelliJ.

A simple example:

build.gradle

test {
    useJUnitPlatform()
    systemProperty "hello",  "world"
}

test class

public class SystemPropTest : StringSpec({
    "should retrieve the System property" {
        System.getProperty("hello") shouldBe "world"
    }
})

[sksamuel]

In 4.4 we can add a kotest.properties file to the classpath, and each key=value pair will be added as a system property before the test engine starts.

[sksamuel]

So you can set system properties inside intellij in the run configuration detaults. See https://intellij-support.jetbrains.com/hc/en-us/community/posts/206245939-How-can-I-set-defaults-for-test-configurations-

In addition we could add support to read a file from the classpath. kotest.local.properties or something, from which we could set system properties before any tests run.