https://kotlinlang.org logo
Channels
100daysofcode
100daysofkotlin
100daysofkotlin-2021
advent-of-code
aem
ai
alexa
algeria
algolialibraries
amsterdam
android
android-architecture
android-databinding
android-studio
androidgithubprojects
androidthings
androidx
androidx-xprocessing
anime
anko
announcements
apollo-kotlin
appintro
arabic
argentina
arkenv
arksemdevteam
armenia
arrow
arrow-contributors
arrow-meta
ass
atlanta
atm17
atrium
austin
australia
austria
awesome-kotlin
ballast
bangladesh
barcelona
bayarea
bazel
beepiz-libraries
belgium
benchmarks
berlin
big-data
books
boston
brazil
brikk
budapest
build
build-tools
bulgaria
bydgoszcz
cambodia
canada
carrat
carrat-dev
carrat-feed
chicago
chile
china
chucker
cincinnati-user-group
cli
clikt
cloudfoundry
cn
cobalt
code-coverage
codeforces
codemash-precompiler
codereview
codingame
codingconventions
coimbatore
collaborations
colombia
colorado
communities
competitive-programming
competitivecoding
compiler
compose
compose-android
compose-desktop
compose-hiring
compose-ios
compose-mp
compose-ui-showcase
compose-wear
compose-web
confetti
connect-audit-events
corda
cork
coroutines
couchbase
coursera
croatia
cryptography
cscenter-course-2016
cucumber-bdd
cyprus
czech
dagger
data2viz
databinding
datascience
dckotlin
debugging
decompose
decouple
denmark
deprecated
detekt
detekt-hint
dev-core
dfw
docs-revamped
dokka
domain-driven-design
doodle
dsl
dublin
dutch
eap
eclipse
ecuador
edinburgh
education
effective-kotlin
effectivekotlin
emacs
embedded-kotlin
estatik
event21-community-content
events
exposed
failgood
fb-internal-demo
feed
firebase
flow
fluid-libraries
forkhandles
forum
fosdem
fp-in-kotlin
framework-elide
freenode
french
fritz2
fuchsia
functional
funktionale
gamedev
ge-kotlin
general-advice
georgia
geospatial
german-lang
getting-started
github-workflows-kt
glance
godot-kotlin
google-io
gradle
graphic
graphkool
graphql
graphql-kotlin
graviton-browser
greece
grpc
gsoc
gui
hackathons
hacktoberfest
hamburg
hamkrest
helios
helsinki
hexagon
hibernate
hikari-cp
hire-me
hiring
hongkong
hoplite
http4k
hungary
hyderabad
image-processing
india
indonesia
inkremental
intellij
intellij-plugins
intellij-tricks
internships
introduce-yourself
io
ios
iran
israel
istanbulcoders
italian
jackson-kotlin
jadx
japanese
jasync-sql
java-to-kotlin-refactoring
javadevelopers
javafx
javalin
javascript
jdbi
jhipster-kotlin
jobsworldwide
jpa
jshdq
juul-libraries
jvm-ir-backend-feedback
jxadapter
k2-early-adopters
kaal
kafka
kakao
kalasim
kapt
karachi
karg
karlsruhe
kash_shell
kaskade
kbuild
kdbc
kgen-doc-tools
kgraphql
kinta
klaxon
klock
kloudformation
kmdc
kmm-español
kmongo
knbt
knote
koalaql
koans
kobalt
kobweb
kodein
kodex
kohesive
koin
koin-dev
komapper
kondor-json
kong
kontent
kontributors
korau
korean
korge
korim
korio
korlibs
korte
kotest
kotest-contributors
kotless
kotlick
kotlin-asia
kotlin-beam
kotlin-by-example
kotlin-csv
kotlin-data-storage
kotlin-foundation
kotlin-fuel
kotlin-in-action
kotlin-inject
kotlin-latam
kotlin-logging
kotlin-multiplatform-contest
kotlin-mumbai
kotlin-native
kotlin-pakistan
kotlin-plugin
kotlin-pune
kotlin-roadmap
kotlin-samples
kotlin-sap
kotlin-serbia
kotlin-spark
kotlin-szeged
kotlin-website
kotlinacademy
kotlinbot
kotlinconf
kotlindl
kotlinforbeginners
kotlingforbeginners
kotlinlondon
kotlinmad
kotlinprogrammers
kotlinsu
kotlintest
kotlintest-devs
kotlintlv
kotlinultimatechallenge
kotlinx-datetime
kotlinx-files
kotlinx-html
kotrix
kotson
kovenant
kprompt
kraph
krawler
kroto-plus
ksp
ktcc
ktfmt
ktlint
ktor
ktp
kubed
kug-leads
kug-torino
kvision
kweb
lambdaworld_cadiz
lanark
language-evolution
language-proposals
latvia
leakcanary
leedskotlinusergroup
lets-have-fun
libgdx
libkgd
library-development
lincheck
linkeddata
lithuania
london
losangeles
lottie
love
lychee
macedonia
machinelearningbawas
madrid
malaysia
mathematics
meetkotlin
memes
meta
metro-detroit
mexico
miami
micronaut
minnesota
minutest
mirror
mockk
moko
moldova
monsterpuzzle
montreal
moonbean
morocco
motionlayout
mpapt
mu
multiplatform
mumbai
munich
mvikotlin
mvrx
myndocs-oauth2-server
naming
navigation-architecture-component
nepal
new-mexico
new-zealand
newname
nigeria
nodejs
norway
npm-publish
nyc
oceania
ohio-kotlin-users
oldenburg
oolong
opensource
orbit-mvi
osgi
otpisani
package-search
pakistan
panamá
pattern-matching
pbandk
pdx
peru
philippines
phoenix
pinoy
pocketgitclient
polish
popkorn
portugal
practical-functional-programming
proguard
prozis-android-backup
pyhsikal
python
python-contributors
quasar
random
re
react
reaktive
realm
realworldkotlin
reductor
reduks
redux
redux-kotlin
refactoring-to-kotlin
reflect
refreshversions
reports
result
rethink
revolver
rhein-main
rocksdb
romania
room
rpi-pico
rsocket
russian
russian_feed
russian-kotlinasfirst
rx
rxjava
san-diego
science
scotland
scrcast
scrimage
script
scripting
seattle
serialization
server
sg-user-group
singapore
skia-wasm-interop-temp
skrape-it
slovak
snake
sofl-user-group
southafrica
spacemacs
spain
spanish
speaking
spek
spin
splitties
spotify-mobius
spring
spring-security
squarelibraries
stackoverflow
stacks
stayhungrystayfoolish
stdlib
stlouis
strife-discord-lib
strikt
students
stuttgart
sudan
swagger-gradle-codegen
swarm
sweden
swing
swiss-user-group
switzerland
talking-kotlin
tallinn
tampa
teamcity
tegal
tempe
tensorflow
terminal
test
testing
testtestest
texas
tgbotapi
thailand
tornadofx
touchlab-tools
training
tricity-kotlin-user-group
trójmiasto
truth
tunisia
turkey
turkiye
twitter-feed
uae
udacityindia
uk
ukrainian
uniflow
unkonf
uruguay
utah
uuid
vancouver
vankotlin
vertx
videos
vienna
vietnam
vim
vkug
vuejs
web-mpp
webassembly
webrtc
wimix_sentry
wwdc
zircon
Powered by
Title
p

Philipp Mayer

12/07/2021, 5:01 PM
Hello everyone, we currently have all of our tests written with JUnit and kotest assertions. For our e2e tests we wanted to look into Kotest’s behaviour spec as it would improve readability by a big margin. We have the following scenario:
class SomeE2ETest: E2ETestEnvironment { ... }
where E2ETestEnvironment is a class (annotated with
@SpringBootTest
) that holds common project config, e.g. a preconfigured http client to post something to the api. Converting this test simply to a Kotest test will not work as we can’t do the following:
class SomeE2EKotest: E2ETestEnvironment(), BehaviorSpec({ ... })
because only one class may appear in a super type list. Long story short: I unfortunately couldn’t find any resource about how to do this with Kotest. Our main scenario is that we probably (currently) only translate the E2E Tests, so I’d like to find a way to access the
E2ETestEnvironment
from both JUnit tests and Kotest Tests. Thanks in advance!
s

sam

12/07/2021, 5:08 PM
You would probably need to make E2ETestEnvironment be an interface
👍 1
e

Emil Kantis

12/07/2021, 10:32 PM
What I’ve done occasionally (if it’s not an option to make
E2ETestEnvironment
an interface) is to extend the spec.. In this case, something like:
@SomeAnnotations
class EndToEndSpec(spec: BehaviorSpec() -> Unit): BehaviorSpec(
  {
    listeners(SomeListener)
    setup()
    spec()
    teardown()
  }
)
etc..
🤘 1
@sam do you know if there’s any downsides to this? In my case I extended FunSpec and it’s been working great. Since I’m using regular Spec methods for defining the tests, the IntelliJ plugin is happy as well.. Example:
s

sam

12/07/2021, 10:36 PM
I think that's a reasonable approach
👍 1
t

thanksforallthefish

12/08/2021, 6:55 AM
We created a custom annotation like
@Transactional
@AutoConfigureMockMvc
@SpringBootTest(
  classes = [TestConfigs...],
  properties = ["spring.main.allow-bean-definition-overriding=true"],
)
annotation class ResourceIntegrationTest
various test configs defines beans to help with test setups and executions (though admittedly then our spring test config is different than production, but then those bean can be injected in your tests) as well as replacing some bean with stubs (for instance when we depend on external APIs)
🙌 2
p

Philipp Mayer

12/08/2021, 7:55 AM
Lots of great input here, thanks! To give a little bit more context, here is our env config:
@SpringBootTest(
    webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
    properties = ["some properties"]
)
@ActiveProfiles("test")
@ContextConfiguration(initializers = [SomeApiInitializer::class])
@Import(AlwaysAuthorizedClientManager::class)
class E2ETestEnvironment(override val webClient: WebTestClient) {
    @Autowired
    lateinit var someApi: WireMockServer

    @Autowired
    lateinit var dealRepository: DealRepository

    @Autowired
    lateinit var objectMapper: ObjectMapper

    @Autowired
    lateinit var publisher: PubSubPublisherTemplate

    @Autowired
    lateinit var subscriberTemplate: PubSubSubscriberTemplate
    
    val ourOwnApi = OurOwnApi(webClient)
}

fun E2ETestEnvironment.resetState() {
    resetDb()
    resetPubSub()
    resetApis()
}

fun E2ETestEnvironment.save(deal: Deal): Deal = dealRepository.save(deal).block()!!

fun E2ETestEnvironment.pullPublishedPubSubMessages(
    topic: String,
    size: Int,
): List<PubsubMessage> = await.atMost(20, TimeUnit.SECONDS).until(...)
There’s quite some ugly code in there (look at all the lateinit vars. 🤮) that needs to be refactored anyway, but the main idea is to have the same configured spring context for the E2E Tests while also abstracting away clean up commands + querying data from external sources (db, pubsub). It would be really interesting how you guys are usually doing this - I see lots of room for improbement on my side. Anyway: Looking into the code I see that the E2E TestEnvironment is ofc only used by the E2E Tests (the ones that I want to move to Kotest), so still having interopability with JUnit is not a factor. @Emil Kantis Extending the Spec is for sure interesting, I’ll look into that! @thanksforallthefish also an interesting approach - our main problem here is that we also use properties from our Environment, so an annotation is not feasable.
t

thanksforallthefish

12/08/2021, 8:16 AM
for
resetState
you can look at kotest extensions, that way you can run it automatically before/after each test, spec (which in my head is the file) etc, as well as on demand (I guess, never really tried) for your autowired stuff and the client you can create a new test bean and inject those into your test (going composition over inheritance). this new bean can also have the methods
save
and
pullPublishedPubSubMessages
. eg:
@Component
class TestBean(
autowired stuff here
) {
 val ourOwnApi = OurOwnApi(webClient)

 fun save(deal: Deal): Deal = dealRepository.save(deal).block()!!

 fun pullPublishedPubSubMessages(
    topic: String,
    size: Int,
): List<PubsubMessage> = await.atMost(20, TimeUnit.SECONDS).until(...)

  //could also have reset here, I just assumed you want to clean before/after tests, not in the middle, and for that I like extensions as it is transparent
}