When we use classic junit style based tests, we can use intellij shortcut -

ctrl + arrow up / down

to go to previous / next test. Is there the same option for kotest? I use free spec 😉

Just another day wishing that Quarkus worked with Kotest 😛epecry: (I actually don't understand why it doesn't, since Quarkus apparently uses JUnit lifecycle/extension methods and Kotest is compatible with them)

Hi everyone! When running JUnit tests in IntelliJ you can click on a test case in the run window and the editor jumps to that test case. Are there any plans to support this with the Kotest Plug-in?

hi, is there a way of disabling Kotest for non-JVM tests when I run a Gradle build? I've updated Kotest and I'm bumping into "Nested tests are not supported" #3141. I've got a lot of nested tests so I don't want to refactor everything, or disable the tests for all platforms (it's a hobby project so only running JVM tests is fine).

Hey all. I'm curious if anyone anyone has worked on a KSP plugin for automatically generating arbitraries for simple classes (e.x. sealed + data classes). If not, time permitting, I'm definitely considering making one. But don't want to reinvent the wheel.

Hi everyone! I'm running Kotest 5.4.2, and I'm trying to disable some tests by using

enableOrReasonIf

. I am following the examples in the documentation so I have the following:

val disabledForReasonX: (TestCase) -> Enabled = { Enabled.disabled("...") }

test("...").config(enabledOrReasonIf = disabledForReasonX) { ... }

It seems like

enabledOrReasonIf

is only available using StringSpec. How can we do something similar in FunSpec?

Hi! Is there a more elegant way to assert that an object is both non-null and assert its contents than this?

Hello!! i make intellij plugin which supports to create boilerplate code for unit test. So far, it supports only 3 spec (behaviour, funspec, freespec) You can download it in intellij store https://plugins.jetbrains.com/plugin/19868-kotest-boilerplate/versions Detail descriptions are in this repsitory If you like that, then click star in this repository https://github.com/tmdgusya/kotlin-test-boilerplate

Hello folks! I have just started tinkering with

kotest

and I am happy with it thus far, except for one little thing that I cannot wrap my head around.

class DummySpec : FreeSpec(
    {
        val mockedBeeper = mockk<Beeper>()

        beforeTest {
            clearAllMocks()
            println("mock cleared")
        }

        "beeper will beep" - {
            "when the stars have aligned" - {
                every { mockedBeeper.beep(any()) } returns "mocked beep"
                "and the moon is high" {
                    mockedBeeper.beep(true) shouldBe "mocked beep"
                }
            }
        }
    },
)

class Beeper {
    fun beep(shouldBeep: Boolean): String = if (shouldBeep) {
        "BEEP"
    } else "shhhhh"
}

this will clear the

mock

three times, once for each line in the test spec. Is there anyway to use

beforeTest

but limit it to be executed only for the top test method? Thanks!

The output of nested data tests does not seem to match the documentation...

Hi, I’m kotest newbie. I just run ViewModel test but I’ve been stuck in some error. Here is the error

io.kotest.engine.extensions.ExtensionException$BeforeEachException: java.lang.NoSuchMethodError: 'androidx.lifecycle.LiveData androidx.lifecycle.Transformations.distinctUntilChanged(androidx.lifecycle.LiveData)'
io.kotest.engine.extensions.MultipleExceptions: io.kotest.engine.extensions.ExtensionException$BeforeEachException: java.lang.NoSuchMethodError: 'androidx.lifecycle.LiveData androidx.lifecycle.Transformations.distinctUntilChanged(androidx.lifecycle.LiveData)'

This error might be related to Android issues, but I have no idea. Is there any ways to test for Transformations(livedata) with Kotest?

Hi, is there a way to say "listA should contain only the elements a, b, c"? For example:

listOf(1, 1, 1).shouldContainOnly(1) -- passes (if there was such a function as shouldContainOnly)
listOf(1, 1, 2, 2).shouldContainOnly(1, 2) -- passes
listOf(1, 1, 2).shouldContainOnly(1) -- fails

is it possible to make tests generated like so:

listOf(
            row(ProductType.Cash, "DFS", listOf(ServicePackage.Base, ServicePackage.BasePlus, ServicePackage.ProtectionPlus), "non-monthly-markets.csv"),
            ...
        ).forEach { (productType, market, onlyPackages, filename) ->
            "$market - $productType" - {
                test here
            }
        }

run in parallel? I’ve got

object KotestProjectConfig : AbstractProjectConfig() {
    override val parallelism = 3
    override val concurrentSpecs: Int = 1
    override val concurrentTests: Int = 20
}

but it doesn’t seem to be doing anything.

I’m trying to setup testcontainers with Kafka and Schema Registry but receiving this. Anybody ever gone through that?

/bin/bash: connect: Cannot assign requested address
/bin/bash: /dev/tcp/localhost/8081: Cannot assign requested address
Ncat: Version 7.70 ( <https://nmap.org/ncat> )
Ncat: Connection to 127.0.0.1 failed: Connection refused.

Looking to see if this PR is still relevant. https://github.com/kotest/kotest/pull/3200 Do you think it makes sense to merge it. If not I can close it no problem

Are tests flavour specific (newbie question, sorry). I'm just starting to add tests to a codebase. My first couple of tests in the commonMain section of a KMM project cause a process to run without ever returning and show error messages in the run panel as

Test events were not received

> Task :<shared module>:compile<flavour>UnitTestJavaWithJavac NO-SOURCE

> Task :<shared module>:test<flavour>UnitTest FAILED

I don't want it flavour specific. I'm not aware of doing anything that would cause that, except have flavours in the project. I'm using a shouldSpec (irrelevant?) and version 5.4.2. Does that make it obvious (to you) what I've got wrong?

Do you know when the Kotest plugin will support Android Studio Electric Eel? EDIT: I received the update for the Kotest plugin and everything works as expected :nice:

I'm getting a weird/annoying error.

Arb.bind(Arb.string(), Arb.string()).checkAll { sp1, sp2 ->

None of the following functions can be called with the arguments supplied: public fun <A, B> Arb.Companion.bind(arbs: List<Arb<TypeVariable(A)>>, fn: (List<TypeVariable(A)>) -> TypeVariable(B)): Arb<TypeVariable(B)> defined in io.kotest.property.arbitrary public fun <T : Any> Arb.Companion.bind(providedArbs: Map<KClass<*>, Arb<*>>, kclass: KClass<TypeVariable(T)>): Arb<TypeVariable(T)> defined in io.kotest.property.arbitrary

In other words, it's not seeing the overloads of

bind

that take several generators in a varargs-ish way. Do I need to not import something that I am importing or import something that I'm not?

Nvm. I figured it out by looking more closely at the types. For posterity, you need to combine the values to create a new

Generator

, i.e.

Arb.bind(Arb.string(), Arb.string()) { s1, s2 -> Pair(s1, s2) }.checkAll { (s1, s2) -> ... }

Sorry for the noise.

Does the kotest-bom:5.4.2 work with kotest-assertions-core-jvm for webapp development on the JVM? Seems it includes a bunch of things, but not the one I need:

[ERROR]     'dependencies.dependency.version' for io.kotest:kotest-assertions-core-jvm:jar is missing. @ line 41, column 21

My (Android) product flavours have (almost) nothing to do with functionality, so running tests for each flavour is just a waste of time. Can I make tests run just once without putting them in a flavour specific directory?

Kotest 5.5 is out https://kotest.io/docs/next/changelog.html

Hey! I'm new to using kotest and I'm trying to get it setup with a project of mine. Seems to work great running from gradle, but the intellij plugin and trying to run from the gutter icons has been painful to try and get working. I posted an issue yesterday, but no replies yet so I thought I'd post here too to get more eyes on it :)

StringSpec surprises me a bit. FunSpec is the "default" in many examples, so that's understandable, and DescribeSpec is the Javascript style, so makes sense.

hey folks, i am using the kotest-bom in one of my projects. It seems there is no 5.5.1 version of this artifact available although v5.5.1 of kotest was recently released. Other kotest related dependencies seem to be available example Was it an intentional change to not release the bom anymore?

enum class Bar {
  BAR1, BAR2;
}

data class Foo {
  val enumSet: Set<Bar>,
}

val fooArb: Arb<Foo> = Arb.bind<Foo>()

the target size requirement of 43 could not be satisfied after 430 consecutive samples
java.lang.IllegalStateException: the target size requirement of 43 could not be satisfied after 430 consecutive sample

My guess is that this is happening because it is trying to create a set of size 43, which is clearly impossible here. I would think that the arb generation would be smart enough to know that the maximum set size here is the number of enumerations in

Bar

. Thoughts? * Not a contribution *

I can't get default configuration via

AbstractProjectConfig

to work. According to the docs, Kotest should automatically find these classes on the classpath and apply their configs to specs. Are there any undocumented requirements for this to work? For example, should this test case pass?

object KotestConfig : AbstractProjectConfig() {
    override val isolationMode = IsolationMode.InstancePerLeaf
}

class KotestConfigSpec : StringSpec({
    "uses leaf isolation mode" {
        assertEquals(IsolationMode.InstancePerLeaf, isolationMode())
    }
})

Looks like failing nodejs tests don't get reported nicely in intellij since Kotlin 1.7.0. Details in the thread, and I can report a bug I just don't know which repo (I'd guess the gradle plugin, but could see it being the IDEA plugin)