Saturday, December 16, 2017

How to create a new test folder called Kotlin for android studio

By Hường Hana 9:00 PM Leave a Comment 
Android Studio 3.1 Canary 4 Build #AI-171.4444016, built on November 10, 2017 JRE: 1.8.0_152-release-1012-b01 amd64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Linux 4.13.16-302.fc27.x86_64

Hello,

I have the following project structure. However, as I have some kotlin files I want to create a new folder called kotlin under test and create a new package and store all my kotlin files there.

Currently I have one called Java, but I want to create the kotlin, but can't seem to be able to find out how to do it.

I would like to do the same for androidTest as well, so I can separate all my java and kotlin files.

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2 Answers

Answers 1

Would like to give credit to rafid059 who posted the link to the proandoriddev.com article which solved my problem.

In my build.gradle file I have the following which worked for both the test and androidTest folders. However, I needed to create the folders first.

sourceSets {     main { java.srcDirs = ['src/main/java', 'src/main/kotlin'] }     test.java.srcDirs += 'src/test/kotlin'     androidTest.java.srcDirs += 'src/androidTest/kotlin' }

If anyone need any help on this you can reply back to this solution.

Answers 2

Basically, the idea is to showcase how we can test our android applications using Kotlin, so as a first step we need to setup and prepare our environment by adding Kotlin dependencies in our build.gradle file:

buildscript {   repositories {     mavenCentral()     jcenter()   }   dependencies {     classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.0.5-2'   } }  apply plugin: 'com.android.application' apply plugin: 'kotlin-android'  ...  dependencies {   ...   compile "org.jetbrains.kotlin:kotlin-stdlib:1.0.6"    ...   testCompile 'org.jetbrains.kotlin:kotlin-stdlib:1.0.6'   testCompile 'org.jetbrains.kotlin:kotlin-test-junit:1.0.6'   testCompile "com.nhaarman:mockito-kotlin:1.1.0"   testCompile 'org.amshove.kluent:kluent:1.14' }

Now we need to set the dedicated directories for tests written in Kotlin, this is done in our sourceSets section:

android {   ...   sourceSets {     test.java.srcDirs += 'src/test/kotlin'     androidTest.java.srcDirs += 'src/androidTest/kotlin'   }   ... }
  • This tutorials walks us through the process of using Java and Kotlin in a single IDEA project.
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