I am trying to test a Kotlin class in my common library for my Kotlin Multiplatform project in Android Studio.
I have had to reconfigure the build.gradle
file several times and managed to fix most of the unresolved references, but Gradle still can't find the reference for the @Test
annotation, while the editor recognizes that it is from the kotlin.test
library.
Here is my test class:
import kotlin.test.*
import kotlinx.serialization.json.*
import Recipe
class RecipeTest {
@Test
fun serializeTest() {
val keys = arrayOf("Dessert", "Cookies", "Cute")
val ingredients = arrayOf("12 cups sugar", "2 cups flour", "1 bottle warm love")
val instructions = arrayOf("Sift together in bowl", "Cook however else you see fit!")
val recipe = Recipe(
"Macaroons",
"Morgan",
"Today",
"small cookies",
"1 hour",
keys,
"1 dozen macaroons",
"Dessert",
"French",
false,
ingredients,
instructions,
true
)
val jsonString = JSON.stringify(Recipe.serializer(), recipe)
val obj = JSON.parse(Recipe.serializer(), jsonString)
assertEquals(Recipe.toString(), jsonString)
assertEquals(Recipe.toString(), obj.toString())
}
}
And my module build.gradle file:
plugins {
id("com.android.library")
}
apply plugin: 'kotlin-multiplatform'
apply plugin: 'kotlinx-serialization'
android {
compileSdkVersion = 28
buildToolsVersion = '28.0.3'
defaultConfig {
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
}
sourceSets {
main {
manifest.srcFile 'src/androidMain/AndroidManifest.xml'
}
}
}
kotlin {
android {
}
iosArm64 {
binaries {
executable()
}
}
iosX64 {
binaries {
executable()
}
}
sourceSets {
commonMain {
dependencies {
implementation 'org.jetbrains.kotlin:kotlin-stdlib-common'
implementation 'org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.9.1'
}
}
commonTest {
dependencies {
implementation 'org.jetbrains.kotlin:kotlin-stdlib-common'
implementation 'org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.9.1'
implementation kotlin('test')
implementation kotlin('test-common')
implementation kotlin('test-annotations-common')
}
}
androidMain {
dependencies {
implementation 'org.jetbrains.kotlin:kotlin-stdlib'
implementation kotlin('test-common')
implementation kotlin('test-annotations-common')
}
}
iosMain {
}
}
}
configurations {
compileClasspath
}
When the test in run from command line, the build fails with an exception, saying
Unresolved reference: test
at the line with the @Test
annotation.
EDIT: I changed the accepted answer to the one that appears to be most helpful to others, but I'm leaving my old one just in case.
I had a similar issue and found that I needed to explicitly add the platform specific Kotlin test dependencies:
kotlin {
// ...
sourceSets {
commonTest {
dependencies {
implementation "org.jetbrains.kotlin:kotlin-test-annotations-common"
implementation "org.jetbrains.kotlin:kotlin-test-common"
}
}
jvmTest {
dependencies {
implementation "org.jetbrains.kotlin:kotlin-test-junit"
}
}
jsTest {
dependencies {
implementation "org.jetbrains.kotlin:kotlin-test-js"
}
}
}
}
With only the commonTest
dependencies
I received the "Unresolved reference: test" error. Once I added the jvmTest
and jsTest
blocks it fixed the error.