diff --git a/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Customers.java b/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Customers.java
index c56cde6..174016e 100644
--- a/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Customers.java
+++ b/projjpn/src/main/java/de/hs_fulda/ciip/projjpn/Customers.java
@@ -24,4 +24,8 @@ public class Customers {
 	public User getByNickname(String nickname) {
 		return pool.get(nickname);
 	}
+	
+	public int getCountOfUsers() {
+		return pool.size();
+	}
 }
diff --git a/projjpn/src/test/java/de/hs_fulda/ciip/projjpn/CustomersTest.java b/projjpn/src/test/java/de/hs_fulda/ciip/projjpn/CustomersTest.java
index 2df7fd8..1a2bf5f 100644
--- a/projjpn/src/test/java/de/hs_fulda/ciip/projjpn/CustomersTest.java
+++ b/projjpn/src/test/java/de/hs_fulda/ciip/projjpn/CustomersTest.java
@@ -105,5 +105,22 @@ public class CustomersTest extends TestCase {
 		assertEquals(userToRemove, removedUser.nickName);
 		
 	}
+	
+	public void test_registerAndCountUsers() {
+		// Given
+		Customers customers = new Customers();
+		int expectedRegisteredUsers = 20;
+		int actualRegisteredUsers = -1;
+		String nickname;
+		
+		// Prepare
+		for(int i = 0, j = 1; i < expectedRegisteredUsers; i++, j++) {
+			nickname = "beastMaster_" + j;
+			customers.registerUser(new User(nickname));
+		}
+		actualRegisteredUsers = customers.getCountOfUsers();
+		assertEquals(expectedRegisteredUsers, actualRegisteredUsers);
+		
+	}
 
 }