add junit-platform-launcher and junit-platform-runner

Author: anishnair95

build.gradle.kts

@@ -1,7 +1,7 @@
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
 
 plugins {
-    kotlin("jvm") version "1.9.25"
+    kotlin("jvm") version "2.1.20"
     id("com.adarshr.test-logger") version "3.2.0"
     id("com.diffplug.spotless") version "6.25.0"
 }
@@ -13,6 +13,8 @@ repositories {
 
 dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter:5.12.2")
+    testImplementation("org.junit.platform:junit-platform-launcher:1.12.1")
+    testImplementation("org.junit.platform:junit-platform-runner:1.12.1")
     testImplementation("org.amshove.kluent:kluent:1.73")
 }
 
@@ -35,8 +37,32 @@ tasks.test {
     }
 }
 
-kotlin {
-    jvmToolchain(19)
+
+// configuring java version
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+}
+
+// alternate way
+//kotlin {
+//    jvmToolchain(11)
+//}
+
+
+// extension level
+//kotlin {
+//    compilerOptions {
+//        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_11
+//    }
+//}
+
+// or
+
+// task level
+// overriding Compile kotlin task
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
+    compilerOptions.jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_11)
 }
 
 spotless {