add withChecks into pipeline

Jenkinsfile

@@ -4,11 +4,11 @@ pipeline {
     stages {
         stage('Test') {
             steps {
-//                 withChecks(name: 'Test', includeStage: true) {
+                withChecks(name: 'Test') {
                     echo 'Testing..'
                     sh './gradlew clean test'
                     junit '**/build/test-results/test/TEST-*.xml'
-//                 }
+                }
             }
         }
     }

app/build.gradle.kts

@@ -9,6 +9,7 @@
 plugins {
     // Apply the application plugin to add support for building a CLI application in Java.
     application
+    jacoco
 }
 
 repositories {
@@ -22,6 +23,7 @@ dependencies {
 
     // This dependency is used by the application.
     implementation("com.google.guava:guava:31.1-jre")
+    implementation("org.jacoco:org.jacoco.core:0.8.12")
 }
 
 // Apply a specific Java toolchain to ease working on different environments.
@@ -31,6 +33,32 @@ java {
     }
 }
 
+jacoco {
+    toolVersion = "0.8.12"
+}
+
+tasks.jacocoTestCoverageVerification {
+    violationRules {
+        rule {
+            limit {
+                minimum = "0.4".toBigDecimal()
+            }
+        }
+
+        rule {
+            isEnabled = false
+            element = "CLASS"
+            includes = listOf("jenkins.test.*")
+
+            limit {
+                counter = "LINE"
+                value = "TOTALCOUNT"
+                maximum = "0.3".toBigDecimal()
+            }
+        }
+    }
+}
+
 application {
     // Define the main class for the application.
     mainClass.set("jenkins.test.App")