update scala version in tests

Author: Gyorgy Mora

build.gradle.kts

@@ -51,15 +51,18 @@ dependencies {
     val junitPlatformVersion = "1.6.0"
     val junitJupiterVersion = "5.7.0"
 
+    val testScalaLibraryVersion = "2.13"
+    val testScalaVersion = "$testScalaLibraryVersion.4"
+
     compileOnly("org.junit.platform:junit-platform-engine:$junitPlatformVersion")
     compileOnly("org.scalatest:scalatest_2.11:3.3.0-SNAP3")
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:$junitJupiterVersion")
     testImplementation("org.junit.platform:junit-platform-launcher:$junitPlatformVersion")
     testImplementation("org.junit.jupiter:junit-jupiter-engine:$junitJupiterVersion")
     testImplementation("org.junit.platform:junit-platform-engine:1.6.0")
-    testImplementation("org.scalatest:scalatest_2.11:3.2.0")
-    testImplementation("org.scala-lang:scala-library:2.11.12")
+    testImplementation("org.scalatest:scalatest_$testScalaLibraryVersion:3.2.0")
+    testImplementation("org.scala-lang:scala-library:$testScalaVersion")
     testImplementation("org.mockito:mockito-core:3.7.0")
 }
 

src/test/scala/tests/FailInAfterAllTest.scala

@@ -6,7 +6,7 @@ import org.scalatest.funsuite.AnyFunSuite
 
 class FailInAfterAllTest extends AnyFunSuite with BeforeAndAfterAll with RegisterCall {
 
-  override def afterAll() {
+  override def afterAll():Unit = {
     register("after")
     fail()
   }