add tests for GreetingController

build.gradle.kts

@@ -1,8 +1,7 @@
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
 	id("org.springframework.boot") version "3.2.4"
 	id("io.spring.dependency-management") version "1.1.4"
+	jacoco
 	kotlin("jvm") version "2.0.20"
 	kotlin("plugin.jpa") version "1.9.23"
 	kotlin("plugin.serialization") version "2.0.20"
@@ -34,13 +33,22 @@ dependencies {
 	testImplementation("org.springframework.boot:spring-boot-starter-test")
 }
 
-tasks.withType<KotlinCompile> {
-	kotlinOptions {
-		freeCompilerArgs += "-Xjsr305=strict"
-		jvmTarget = "17"
+kotlin {
+	compilerOptions {
+		freeCompilerArgs.addAll("-Xjsr305=strict")
+		apiVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_1_7)
 	}
 }
 
 tasks.withType<Test> {
 	useJUnitPlatform()
 }
+
+tasks.test {
+	finalizedBy(tasks.jacocoTestReport) // report is always generated after tests run
+}
+
+tasks.jacocoTestReport {
+	dependsOn(tasks.test) // tests are required to run before generating the report
+}
+