New unit test format

patterns/dipmodular/com.baeldung.dip.daos/com/baeldung/dip/daos/CustomerDao.java

@@ -0,0 +1,13 @@
+package com.baeldung.dip.daos;
+
+import com.baeldung.dip.entities.Customer;
+import java.util.Map;
+import java.util.Optional;
+
+public interface CustomerDao {
+
+    Optional<Customer> findById(int id);
+
+    List<Customer> findAll();
+
+}

patterns/dipmodular/com.baeldung.dip.daos/module-info.java

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+module com.baeldung.dip.daos {
+    requires com.baeldung.dip.entities;
+    exports com.baeldung.dip.daos;
+}