test: add unit tests for AuthController

Author: felipemelozx

src/main/java/fun/trackmoney/auth/dto/LoginResponseDTO.java

@@ -1,4 +1,4 @@
 package fun.trackmoney.auth.dto;
 
-public record LoginResponseDTO (String Token){
+public record LoginResponseDTO (String token){
 }

src/main/java/fun/trackmoney/utils/response/ApiResponse.java

@@ -58,6 +58,11 @@ public void setSuccess(boolean success) {
     this.success = success;
   }
 
+  public boolean getSuccess() {
+    return success;
+  }
+
+
   /**
    * Gets the message of the response.
    *

src/test/java/fun/trackmoney/auth/controller/AuthControllerTest.java

@@ -0,0 +1,58 @@
+package fun.trackmoney.auth.controller;
+
+import fun.trackmoney.auth.dto.LoginRequestDTO;
+import fun.trackmoney.auth.dto.LoginResponseDTO;
+import fun.trackmoney.auth.service.AuthService;
+import fun.trackmoney.user.dtos.UserRequestDTO;
+import fun.trackmoney.user.dtos.UserResponseDTO;
+import fun.trackmoney.utils.response.ApiResponse;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.http.ResponseEntity;
+import java.util.UUID;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.when;
+
+class AuthControllerTest {
+
+  @Mock
+  AuthService authService;
+  @InjectMocks
+  AuthController authController;
+
+  @BeforeEach
+  void setUp() {
+    MockitoAnnotations.openMocks(this);
+  }
+
+  @Test
+  void shouldReturnUserOnRegister() {
+    UserRequestDTO userRequest = new UserRequestDTO("John","john@example.com", "123");
+    UserResponseDTO userResponse = new UserResponseDTO(UUID.randomUUID(), "John", "john@example.com");
+
+    when(authService.register(userRequest)).thenReturn(userResponse);
+
+    ResponseEntity<ApiResponse<UserResponseDTO>> response = authController.register(userRequest);
+
+    assertTrue(response.getBody().getSuccess());
+    assertEquals("User register!", response.getBody().getMessage());
+    assertEquals("John", response.getBody().getData().name());
+  }
+
+  @Test
+  void shouldReturnTokenOnLogin() {
+    LoginRequestDTO loginRequest = new LoginRequestDTO("john@example.com", "123");
+    LoginResponseDTO loginResponse = new LoginResponseDTO("jwt-token");
+
+    when(authService.login(loginRequest)).thenReturn(loginResponse);
+
+    ResponseEntity<ApiResponse<LoginResponseDTO>> response = authController.login(loginRequest);
+
+    assertTrue(response.getBody().getSuccess());
+    assertEquals("Login successful!", response.getBody().getMessage());
+    assertEquals("jwt-token", response.getBody().getData().token());
+  }
+}

src/test/java/fun/trackmoney/auth/service/AuthServiceTest.java

@@ -71,7 +71,7 @@ void shouldLoginSuccessfullyWhenCredentialsAreValid() {
     LoginResponseDTO response = authService.login(loginDto);
 
     // Assert
-    assertEquals(expectedToken, response.Token());
+    assertEquals(expectedToken, response.token());
   }
 
   @Test