diff --git a/src/test/java/_11/asktpk/artisanconnectbackend/ClientControllerTest.java b/src/test/java/_11/asktpk/artisanconnectbackend/ClientControllerTest.java
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+++ b/src/test/java/_11/asktpk/artisanconnectbackend/ClientControllerTest.java
@@ -0,0 +1,174 @@
+package _11.asktpk.artisanconnectbackend;
+
+import _11.asktpk.artisanconnectbackend.controller.ClientController;
+import _11.asktpk.artisanconnectbackend.dto.ClientDTO;
+import _11.asktpk.artisanconnectbackend.service.ClientService;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import java.util.Collections;
+import java.util.List;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+class ClientControllerTest {
+
+    private MockMvc mockMvc;
+    private final ObjectMapper objectMapper = new ObjectMapper();
+
+    @Mock
+    private ClientService clientService;
+
+    @InjectMocks
+    private ClientController clientController;
+
+    private ClientDTO sampleClientDTO;
+
+    @BeforeEach
+    void setUp() {
+        System.out.println("Inicjalizacja konfiguracji testu...");
+        MockitoAnnotations.openMocks(this);
+        mockMvc = MockMvcBuilders.standaloneSetup(clientController).build();
+
+        sampleClientDTO = new ClientDTO();
+        sampleClientDTO.setId(1L);
+        sampleClientDTO.setEmail("test@example.com");
+        sampleClientDTO.setFirstName("John");
+        sampleClientDTO.setLastName("Doe");
+        sampleClientDTO.setRole("USER");
+        System.out.println("Konfiguracja testu zakończona z przykładowym klientem: " + sampleClientDTO);
+    }
+
+    @Test
+    @DisplayName("Powinien zwrócić listę klientów")
+    void getAllClients_ShouldReturnListOfClients() throws Exception {
+        System.out.println("Uruchamianie testu: getAllClients_ShouldReturnListOfClients");
+
+        List<ClientDTO> clients = Collections.singletonList(sampleClientDTO);
+        when(clientService.getAllClients()).thenReturn(clients);
+        System.out.println("Konfiguracja mocka: clientService.getAllClients() will return " + clients);
+
+        mockMvc.perform(get("/api/v1/clients/get/all"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].id").value(1L))
+                .andExpect(jsonPath("$[0].email").value("test@example.com"));
+
+        verify(clientService, times(1)).getAllClients();
+        System.out.println("Test zaliczony: Successfully retrieved list of clients");
+    }
+
+    @Test
+    @DisplayName("Powinien utworzyć nowego klienta")
+    void addClient_WhenClientNotExists_ShouldCreateClient() throws Exception {
+        System.out.println("Uruchamianie testu: addClient_WhenClientNotExists_ShouldCreateClient");
+
+        when(clientService.clientExists(anyLong())).thenReturn(false);
+        when(clientService.addClient(any(ClientDTO.class))).thenReturn(sampleClientDTO);
+        System.out.println("Konfiguracja mocka: clientService.addClient() will return " + sampleClientDTO);
+
+        mockMvc.perform(post("/api/v1/clients/add")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(objectMapper.writeValueAsString(sampleClientDTO)))
+                .andExpect(status().isCreated())
+                .andExpect(jsonPath("$.id").value(1L));
+
+        verify(clientService, times(1)).addClient(any(ClientDTO.class));
+        System.out.println("Test zaliczony: Successfully created new client");
+    }
+
+    @Test
+    @DisplayName("Powinien zwrócić 409 gdy klient istnieje")
+    void addClient_WhenClientExists_ShouldReturnConflict() throws Exception {
+        System.out.println("Uruchamianie testu: addClient_WhenClientExists_ShouldReturnConflict");
+
+        when(clientService.clientExists(anyLong())).thenReturn(true);
+        System.out.println("Konfiguracja mocka: clientService.clientExists() will return true");
+
+        mockMvc.perform(post("/api/v1/clients/add")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(objectMapper.writeValueAsString(sampleClientDTO)))
+                .andExpect(status().isConflict());
+
+        verify(clientService, times(0)).addClient(any(ClientDTO.class));
+        System.out.println("Test zaliczony: Correctly returned 409 for existing client");
+    }
+
+    @Test
+    @DisplayName("Powinien zaktualizować istniejącego klienta")
+    void updateClient_WhenClientExists_ShouldUpdateClient() throws Exception {
+        System.out.println("Uruchamianie testu: updateClient_WhenClientExists_ShouldUpdateClient");
+
+        when(clientService.clientExists(1L)).thenReturn(true);
+        when(clientService.updateClient(anyLong(), any(ClientDTO.class))).thenReturn(sampleClientDTO);
+        System.out.println("Konfiguracja mocka: clientService.updateClient() will return " + sampleClientDTO);
+
+        mockMvc.perform(put("/api/v1/clients/edit/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(objectMapper.writeValueAsString(sampleClientDTO)))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.id").value(1L));
+
+        verify(clientService, times(1)).updateClient(anyLong(), any(ClientDTO.class));
+        System.out.println("Test zaliczony: Successfully updated client");
+    }
+
+    @Test
+    @DisplayName("Powinien zwrócić 404 gdy klient nie istnieje")
+    void updateClient_WhenClientNotExists_ShouldReturnNotFound() throws Exception {
+        System.out.println("Uruchamianie testu: updateClient_WhenClientNotExists_ShouldReturnNotFound");
+
+        when(clientService.clientExists(1L)).thenReturn(false);
+        System.out.println("Konfiguracja mocka: clientService.clientExists(1L) will return false");
+
+        mockMvc.perform(put("/api/v1/clients/edit/1")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(objectMapper.writeValueAsString(sampleClientDTO)))
+                .andExpect(status().isNotFound());
+
+        verify(clientService, times(0)).updateClient(anyLong(), any(ClientDTO.class));
+        System.out.println("Test zaliczony: Correctly returned 404 for non-existent client");
+    }
+
+    @Test
+    @DisplayName("Powinien usunąć istniejącego klienta")
+    void deleteClient_WhenClientExists_ShouldDeleteClient() throws Exception {
+        System.out.println("Uruchamianie testu: deleteClient_WhenClientExists_ShouldDeleteClient");
+
+        when(clientService.clientExists(1L)).thenReturn(true);
+        doNothing().when(clientService).deleteClient(1L);
+        System.out.println("Konfiguracja mocka: clientService.deleteClient(1L) will do nothing");
+
+        mockMvc.perform(delete("/api/v1/clients/delete/1"))
+                .andExpect(status().isOk());
+
+        verify(clientService, times(1)).deleteClient(1L);
+        System.out.println("Test zaliczony: Successfully deleted client");
+    }
+
+    @Test
+    @DisplayName("Powinien zwrócić 404 gdy klient nie istnieje")
+    void deleteClient_WhenClientNotExists_ShouldReturnNotFound() throws Exception {
+        System.out.println("Uruchamianie testu: deleteClient_WhenClientNotExists_ShouldReturnNotFound");
+
+        when(clientService.clientExists(1L)).thenReturn(false);
+        System.out.println("Konfiguracja mocka: clientService.clientExists(1L) will return false");
+
+        mockMvc.perform(delete("/api/v1/clients/delete/1"))
+                .andExpect(status().isNotFound());
+
+        verify(clientService, times(0)).deleteClient(anyLong());
+        System.out.println("Test zaliczony: Correctly returned 404 for non-existent client");
+    }
+}
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