BAEL-4488 Convert class with main to UnitTest class

core-java-modules/core-java-security-2/src/test/java/com/baeldung/cipher/AvailableCiphersUnitTest.java

@@ -1,32 +1,35 @@
 package com.baeldung.cipher;
 
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.security.Provider;
 import java.security.Security;
 import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
 
-public class AvailableCiphers {
-    public static void main(String[] args) {
-        printAllCiphers();
-        printCompatibleCiphers();
-    }
+public class AvailableCiphersUnitTest {
+    private final Logger logger = LoggerFactory.getLogger(AvailableCiphersUnitTest.class);
 
-    private static void printAllCiphers() {
+    @Test
+    public void whenGetServices_thenGetAllCipherAlgorithms() {
         for (Provider provider : Security.getProviders()) {
             for (Provider.Service service : provider.getServices()) {
-                System.out.println(service.getAlgorithm());
+                logger.info(service.getAlgorithm());
             }
         }
     }
 
-    private static void printCompatibleCiphers() {
+    @Test
+    public void whenGetServicesWithFilter_thenGetAllCompatibleCipherAlgorithms() {
         List<String> algorithms = Arrays.stream(Security.getProviders())
                 .flatMap(provider -> provider.getServices().stream())
                 .filter(service -> "Cipher".equals(service.getType()))
                 .map(Provider.Service::getAlgorithm)
                 .collect(Collectors.toList());
 
-        algorithms.forEach(System.out::println);
+        algorithms.forEach(logger::info);
     }
 }