Mini-plugin to measure the duration of tests in IntelliJ IDEs (because test runners don't show the actual time)

plugin.kts

import com.intellij.execution.ExecutionListener
import com.intellij.execution.ExecutionManager.Companion.EXECUTION_TOPIC
import com.intellij.execution.process.ProcessHandler
import com.intellij.execution.runners.ExecutionEnvironment
import java.util.concurrent.ConcurrentHashMap

val startTimeByRunProfile = ConcurrentHashMap<String, Long>()

project!!.messageBus.connect(pluginDisposable)
    .subscribe(EXECUTION_TOPIC, object : ExecutionListener {
        override fun processStarting(executorId: String, env: ExecutionEnvironment) {
            startTimeByRunProfile[env.runProfile.name] = System.currentTimeMillis()
            liveplugin.show("${env.runProfile.name} started")
        }

        override fun processTerminated(executorId: String, env: ExecutionEnvironment, handler: ProcessHandler, exitCode: Int) {
            val startTime = startTimeByRunProfile.remove(env.runProfile.name) ?: return
            val duration = System.currentTimeMillis() - startTime
            liveplugin.show("${env.runProfile.name} finished in $duration ms")
        }
    })