runTest

backgroundScope

backgroundScope

backgroundScope

backgroundScope

package com.repro

import io.kotest.core.spec.IsolationMode
import io.kotest.core.spec.style.DescribeSpec
import io.kotest.matchers.shouldBe
import kotlinx.coroutines.flow.firstOrNull
import kotlinx.coroutines.flow.flow
import kotlinx.coroutines.launch
import kotlinx.coroutines.test.UnconfinedTestDispatcher
import kotlinx.coroutines.test.runTest

class Repro : DescribeSpec() {

    override fun isolationMode() = IsolationMode.InstancePerLeaf

    init {
        describe("repro") {
            runTest(UnconfinedTestDispatcher()) {
                describe("tested expression") {
                    backgroundScope.launch { error("Error in background scope") }
                    // coroutineScope { launch { error("Error in non-background scope") } }

                    it("should not be reached?") {
                        Unit
                    }
                }

                describe("background scope here never ends") {
                    val neverEnds = backgroundScope.launch {
                        flow<Unit> { }.firstOrNull()
                    }

                    it("should fail") {
                        neverEnds.isCompleted shouldBe true
                    }
                }
            }
        }
    }
}

describe

xdescribe("background scope here never ends")

describe("background scope here never ends")

Error in non-background scope

SingleInstance

InstancePerLeaf

runTest

runTest