Update build.gradle

build.gradle

 plugins {
-    id 'java'
+    id "java"
 }
 
+group 'L3_INFO'
 version '1.0-SNAPSHOT'
 
-sourceCompatibility = 1.8
-
 repositories {
     mavenCentral()
 }
 
 dependencies {
-    testCompile group: 'junit', name: 'junit', version: '4.12'
-    testCompile 'org.hamcrest:hamcrest-library:1.3'
+    testImplementation("org.junit.jupiter:junit-jupiter:5.10.0",
+            "org.assertj:assertj-core:3.24.2")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+test {
+    useJUnitPlatform()
 }
+