diff --git a/jans-core/script/src/test/java/io/jans/service/custom/script/test/java/StandaloneJavaCustomScriptManagerTest.java b/jans-core/script/src/test/java/io/jans/service/custom/script/test/java/StandaloneJavaCustomScriptManagerTest.java
new file mode 100644
index 00000000000..94d774b3f02
--- /dev/null
+++ b/jans-core/script/src/test/java/io/jans/service/custom/script/test/java/StandaloneJavaCustomScriptManagerTest.java
@@ -0,0 +1,77 @@
+package io.jans.service.custom.script.test.java;
+
+import io.jans.log.LoggingHelper;
+import io.jans.orm.PersistenceEntryManager;
+import io.jans.orm.ldap.impl.LdapEntryManager;
+import io.jans.orm.ldap.impl.LdapEntryManagerFactory;
+import io.jans.service.custom.script.StandaloneCustomScriptManager;
+import io.jans.service.custom.script.test.SampleContext;
+import org.apache.log4j.Logger;
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.status.StatusLogger;
+import org.json.JSONObject;
+
+import java.util.Properties;
+
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertTrue;
+
+/**
+ * @author Yuriy Zabrovarnyy
+ */
+@SuppressWarnings("java:S2187")
+public class StandaloneJavaCustomScriptManagerTest {
+
+    private static final Logger LOG = Logger.getLogger(StandaloneJavaCustomScriptManagerTest.class);
+
+    static {
+        StatusLogger.getLogger().setLevel(Level.OFF);
+        LoggingHelper.configureConsoleAppender();
+    }
+
+    private static Properties getSampleConnectionProperties() {
+        Properties connectionProperties = new Properties();
+
+        connectionProperties.put("ldap#bindDN", "cn=Directory Manager");
+        connectionProperties.put("ldap#bindPassword", "secret");
+        connectionProperties.put("ldap#servers", "localhost:1636");
+        connectionProperties.put("ldap#useSSL", "true");
+        connectionProperties.put("ldap#maxconnections", "3");
+
+        return connectionProperties;
+    }
+
+    public static LdapEntryManager createLdapEntryManager() {
+        LdapEntryManagerFactory ldapEntryManagerFactory = new LdapEntryManagerFactory();
+        Properties connectionProperties = getSampleConnectionProperties();
+
+        LdapEntryManager ldapEntryManager = ldapEntryManagerFactory.createEntryManager(connectionProperties);
+        LOG.debug("Created LdapEntryManager: " + ldapEntryManager);
+
+        return ldapEntryManager;
+    }
+
+    public static void main(String[] args) {
+        PersistenceEntryManager persistenceEntryManager = createLdapEntryManager();
+        StandaloneCustomScriptManager customScriptManager = new StandaloneCustomScriptManager(persistenceEntryManager, "ou=scripts,o=jans");
+
+        try {
+            // Register required external scripts
+            SampleDiscoveryExternalScriptService javaScriptService = new SampleDiscoveryExternalScriptService();
+            customScriptManager.registerExternalScriptService(javaScriptService);
+
+            // Init script manager and load scripts
+            customScriptManager.init();
+
+            // Call script
+            Object context = new SampleContext(System.currentTimeMillis());
+
+            JSONObject jsonObject = new JSONObject("{}");
+            assertTrue(javaScriptService.modifyDiscovery(jsonObject, context));
+
+            assertEquals(jsonObject.getString("key_from_java"), "value_from_script_on_java");
+        } finally {
+            customScriptManager.destory();
+        }
+    }
+}