When trying to execute some Kotlin code, while also using JUnit, the Intellij IDEA will execute the code until the end, instead of stopping at the breakpoint.
Demo:
class Tester {
@Test
fun shouldBreakpoint() {
//Line where threads should suspend:
println("Should Suspend Here") //Breakpoint added to this line
println("Shouldn't run this code unless I release above breakpoint")
}
}
When clicking "Debug Tester" or "Debug shouldBreakpoint", no breakpoints will work.
The console outputs both print lines, without ever stopping at the breakpoint. If the same code is written in Java, the debugger works:
public class Testerino {
@Test
public void shouldBreakpoint() {
System.out.println("Should Suspend Here"); //Breakpoint added to this line
System.out.println("Shouldn't run this code unless I release above breakpoint");
}
}
When running on Kotlin main function, it also works correctly:
fun main(args: Array<String>) {
println("Should Suspend Here") //Breakpoint added to this line
println("Shouldn't run this code unless I release above breakpoint")
}
This is running on an Android Project, and the build.gradle (app) file is:
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
android {
compileSdkVersion 27
buildToolsVersion "27.0.3"
defaultConfig {
applicationId "me.kerooker.visualhonk"
minSdkVersion 19
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
vectorDrawables.useSupportLibrary = true
}
buildTypes {
release {
minifyEnabled false
shrinkResources false
proguardFiles getDefaultProguardFile('proguard-android.txt')
}
debug {
debuggable true
minifyEnabled false // set this to false
proguardFiles getDefaultProguardFile('proguard-android.txt')
}
}
}
configurations.all {
resolutionStrategy {
forcedModules = [
"org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version",
"org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
]
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:27.+'
compile 'com.android.support.constraint:constraint-layout:+'
compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
testCompile 'io.kotlintest:kotlintest:2.0.7'
testCompile 'junit:junit:4.12'
}
repositories {
mavenCentral()
}
What can be done for Intellij to correctly recognize and stop at breakpoints?
