Does kotlintest have documentation on interceptors? Can’t seem to find it. I basically want to run my tests in a database transaction and then roll back when finished.

What are legitimate reasons (real-live benefits) of migrating Android tests to Junit5… something besides the fact that number

5

is cooler that number

4

🤔?

Does something like

@VisibleForTesting

exists in pure Kotlin? On Android we have

android.support.annotation.VisibleForTesting

to change the visibility of properties and methods for unit tests.

Hi, is there anybody who are using ktor for REST API and has experience in writing IT tests with mocks? Lets assume that I use a kind of service class in my routing. I need to mock that service and test concrete routing / endpoint

Is there a way to run one individual test in a class of lots of tests with IntelliJ? Trying to run one unit test with the run button from sidebar, I think we used to be able to do this...

Has anyone ran into issue with Mockito and kotlin coroutines. Where testing with verify fails because the continuation is different

Anyone here know where good Mockito 3 documentation can be found. or a good talk on Mockito 3... The docs I keep seeing refrence Mockito 2.xx

How do I unit-test something that is

DeprecationLevel.HIDDEN

? 😄

I am looking for a way to continously compile and run tests, but only those for which dependencies have been recompiled. Basically, has anyone here found a way to replicate what

sbt testQuick

does but in Kotlin + JUnit5 (with Gradle)?

@Test
    fun `should emit one account, then two accounts without images`() = runBlockingTest {

        val firstAccount = Account(
            id = MockDataFactory.randomUuid(),
            name = MockDataFactory.randomString(),
            avatar = Image(
                id = MockDataFactory.randomUuid(),
                sizes = listOf(Image.Size.SMALL)
            )
        )

        val secondAccount = Account(
            id = MockDataFactory.randomUuid(),
            name = MockDataFactory.randomString(),
            avatar = Image(
                id = MockDataFactory.randomUuid(),
                sizes = listOf(Image.Size.SMALL)
            )
        )

        val accounts = flow {
            emit(firstAccount)
            delay(100)
            emit(secondAccount)
        }

        val blob = ByteArray(0)

        val response = Either.Right(blob)

        observeAccounts.stub {
            onBlocking { build() } doReturn accounts
        }

        loadImage.stub {
            onBlocking { invoke(any(), any(), any()) } doAnswer { answer ->
                answer.getArgument<(Either<Throwable, ByteArray>) -> Unit>(2)(response)
            }
        }

        vm = buildViewModel()

        vm.state.observeForTesting {

            advanceTimeBy(1000)

            assertEquals(
                expected = listOf(
                    SelectAccountView.AccountView(
                        id = firstAccount.id,
                        name = firstAccount.name,
                        image = blob
                    ),
                    SelectAccountView.AccountView(
                        id = secondAccount.id,
                        name = secondAccount.name,
                        image = blob
                    )
                ),
                actual = vm.state.value
            )
        }

        vm.viewModelScope.cancel()
    }

Why would

advanceTimeBy

not work? Test fails: I receive only the first emission containing the first account. I wonder how to test several live data emissions, each being delayed by some interval.

i.e. both dependant on internet as part of the test.. good? bad?

I am trying to use coroutines in some espresso test code, but am getting

NoSuchMethodError

.

java.lang.NoSuchMethodError: No static method runBlocking$default(Lkotlin/coroutines/CoroutineContext;Lkotlin/jvm/functions/Function2;ILjava/lang/Object;)Ljava/lang/Object; in class Lkotlinx/coroutines/BuildersKt; or its super classes (declaration of 'kotlinx.coroutines.BuildersKt' appears in /data/app/build-acBhKAw8srVGmPVxba9HCw==/base.apk!classes2.dex)

I have defined rules for

testProguardFiles

to do nothing and I have redeclared the coroutines dependency with

androidTestImplementation

. Is there a way to force the test code to use a separate classpath for coroutines? Or what's the recommended way to resolve?

Does anyone TDD hackerrank/leetcode/interview coding questions?

hi all, It’s the fist time I’m using the paging library and I’m trying to create some instrumented tests but they don’t seem to be working - https://github.com/noloman/WorldHeritages/blob/master/app/src/androidTest/java/me/manulorenzo/worldheritages/ui/main/MainFragmentTest.kt could somebody give me a hand pls? thanks!

Hi all, I’m having some issues where all my instrumentation tests in Android succeed even when I put completely wrong info in my testing function such as:

class MathTest {

    @Test
    fun test_should_fail_function() {
        assert(2.0.pow(24) == 2.0)
    }
}

In my build.gradle I have these imports:

// Android Instrumentation
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation "org.junit.jupiter:junit-jupiter-api:$junit_version"
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation "org.jetbrains.kotlin:kotlin-test-common:$kotlin_version"
androidTestImplementation "de.mannodermaus.junit5:android-test-core:1.0.0"
androidTestRuntimeOnly "de.mannodermaus.junit5:android-test-runner:1.0.0"

Any idea what could be making all of them succeed ?

is there an easy way to order kotlin test like junits Order()?

So I have a multiplatform library - Android, iOS and partial JS. What is the latest (unit) testing story for this scenario? That is, should I be able to run tests against the 3 different platforms easily from IntelliJ (I have the Ultimate if needed) or AS? Any up-to-date examples I might look to? Thank you.

How do you test an extension function that is a class member. Lets consider this example

class DateUtils {
  fun LocalDateTime.setTimeZone(targetTimeZone: String): LocalDateTime {
        return ZonedDateTime.of(
            this,
            ZoneId.of(targetTimeZone)
        ).toLocalDateTime()
    }
}

@Test
fun `It should set time zone`() {
  val msgDateStr = "2020-03-07T11:55:00"
  val format = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss")
  al currDate = LocalDateTime.parse(msgDateStr, format)
  assertEquals("2020-03-07T11:55-05:00[America/New_York]", DateUtils.setTimeZone(currDate, "America/NewYork"))
}

DateUtils.setTimeZome(...) // I get a Unresolved reference: setTimeZone

This might be a dumb question but I can’t seem to figure it out: I create a jacoco test report for tests in both test and androidTest folders of my project. This works fine in local, but when I run it on Jenkins, the UI tests are skipped (literally says SKIPPED next to them in the console) Any idea what could be causing it?

Hi guys, I am using `nhaarman/mockito-kotlin`and I am trying to mock my API class which has a dependency injection. Something like this:

class Api(s: String) {
 private val name = s
}

I am doing this:

_val apiMock = mock_<Api> { … }

How can I pass the `s`argument the class needs? Thanks in advance

I’m trying to assert if a function ran inside a

if() {} else {}

statement? How I can do that?

That sounds awfully like mockito verify

I just stumbled over https://kotlinlang.org/docs/reference/js-project-setup.html and saw that there is a new gradle plugin for js (maybe kotlin-exmaples should be updated). Maybe its the wrong place to ask but I'll try it nonetheless. Is there a way to define what parameters are passed to mocha so that I can change for instance what reporter is used?

Hey, all. I’m curious if anyone has discovered a way to create “dynamic” multiplatform tests (using

kotlin.test

) similar to the way spekframework and kotest do, rather than writing

n

variants for the same test.

Hey everyone! I’ve started writing UI tests using Espresso but I found it is awful to write and read. I’ve picked up Kakao to simplify some of the syntax, but I was wondering if some of you have some preferred library on top of Espresso or alternatives to make writing UI tests easier?

Hello all. I'm using sonarqube + jacoco, but jacoco is not creating xml files. And my coverage is always 0.0%. Could anyone help?

Hi all, Which library/framework are you using for parameterized tests, and why?

Hello, good morning you guys, I have a small question about testing: What kind of test do you often implement in Startup ( Release many features in a short time) ? Many thanks.

Small tests are unit tests that validate your app's behavior one class at a time.
Medium tests are integration tests that validate either interactions between levels of the stack within a module, or interactions between related modules.
Large tests are end-to-end tests that validate user journeys spanning multiple modules of your app.