diff --git a/patterns-modules/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatterUnitTest.java b/patterns-modules/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatterUnitTest.java
index e394cbbf94..1c37766185 100644
--- a/patterns-modules/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatterUnitTest.java
+++ b/patterns-modules/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatterUnitTest.java
@@ -2,16 +2,25 @@ package com.baeldung.pattern.cleanarchitecture.usercreation;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
+import static org.mockito.Mockito.mock;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.when;
+import static org.mockito.Mockito.verify;
+
+import org.mockito.ArgumentCaptor;
 import org.junit.jupiter.api.Test;
 import org.springframework.web.server.ResponseStatusException;
 
-import com.baeldung.pattern.cleanarchitecture.usercreation.UserResponseFormatter;
-import com.baeldung.pattern.cleanarchitecture.usercreation.UserResponseModel;
-
 class UserResponseFormatterUnitTest {
 
     UserResponseFormatter userResponseFormatter = new UserResponseFormatter();
+    UserRegisterDsGateway userDsGateway = mock(UserRegisterDsGateway.class);
+    UserPresenter userPresenter = mock(UserPresenter.class);
+    UserFactory userFactory = mock(UserFactory.class);
+    UserInputBoundary userInputBoundary = new UserRegisterInteractor(userDsGateway, userPresenter, userFactory);
+    ArgumentCaptor<String> userRequestModelArgumentCaptor = ArgumentCaptor.forClass(String.class);
 
     @Test
     void givenDateAnd3HourTime_whenPrepareSuccessView_thenReturnOnly3HourTime() {
@@ -23,7 +32,19 @@ class UserResponseFormatterUnitTest {
 
     @Test
     void whenPrepareFailView_thenThrowHttpConflictException() {
-        assertThatThrownBy(() -> userResponseFormatter.prepareFailView("Invalid password"))
-            .isInstanceOf(ResponseStatusException.class);
+        assertThatThrownBy(() -> userResponseFormatter.prepareFailView("Invalid password")).isInstanceOf(ResponseStatusException.class);
     }
-}
+
+    @Test
+    void whenCreateUser_thenSuccess() {
+
+        UserRequestModel userRequestModel = new UserRequestModel("baeldung", "123456");
+        when(userFactory.create(anyString(), anyString())).thenReturn(new CommonUser("baeldung", "123456"));
+
+        userInputBoundary.create(userRequestModel);
+
+        verify(userDsGateway).existsByName(userRequestModelArgumentCaptor.capture());
+        String name = userRequestModel.getName();
+        assertEquals("baeldung", name);
+    }
+}
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