how to mock companion object kotlinlang #android

Docs

Join the conversation Join Slack

Channels

100daysofcode

androidgithubprojects

cincinnati-user-group

competitive-programming

event21-community-content

java-to-kotlin-refactoring

jvm-ir-backend-feedback

kotlin-multiplatform-contest

kotlinultimatechallenge

myndocs-oauth2-server

naming

navigation-architecture-component

practical-functional-programming

proguard

prozis-android-backup

refactoring-to-kotlin

russian-kotlinasfirst

skia-wasm-interop-temp

stayhungrystayfoolish

swagger-gradle-codegen

tricity-kotlin-user-group

Title

gouravkundu

03/16/2018, 11:13 AM

how to mock companion object?

wickedev

03/16/2018, 11:28 AM

val companion = mock(Class.Companion::class)

with this solution. https://github.com/mockito/mockito/wiki/What%27s-new-in-Mockito-2#unmockable

rkeazor

03/16/2018, 2:32 PM

Have you actually tried this? because your are not injecting a dependency. So just because you create a val companion, what exactly would you do with it?

wickedev

03/16/2018, 5:24 PM

https://imgur.com/a/PUgPR

any problem?

rkeazor

03/18/2018, 1:33 PM

@wickedev yes there is a problem. How do you stub it out when its a dependency in another object

@wickedev Here let me show you

suppose I write this class

gildor

03/20/2018, 1:39 AM

Don’t mock companion object, that’s all. In 98% cases you can avoid it if use proper architecture solutions

@wickedev Your example is completely synthetic, hard to find case where it can be useful. Usually, when someone ask “how to mock companion object” it’s exactly the same case when people ask “how to mock static member”, so their code just not really testable (or testable with some heavy-weight mocking, like spy or final class mocking)

View count: 1051

Back to #android Join thread in Slack