test : 커스텀 필터 테스트코드 작성

Author: seungwookc97

src/test/java/com/back/global/security/CustomAuthenticationFilterTest.java

@@ -0,0 +1,90 @@
+package com.back.global.security;
+
+import com.back.global.jwt.JwtUtil;
+import com.back.global.rq.Rq;
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+class CustomAuthenticationFilterTest {
+
+    @Mock
+    private JwtUtil jwtUtil;
+
+    @Mock
+    private Rq rq;
+
+    @Mock
+    private HttpServletRequest request;
+
+    @Mock
+    private HttpServletResponse response;
+
+    @Mock
+    private FilterChain filterChain;
+
+    @InjectMocks
+    private CustomAuthenticationFilter filter;
+
+    @BeforeEach
+    void setUp() {
+        ReflectionTestUtils.setField(filter, "accessTokenExpiration", 900);
+        SecurityContextHolder.clearContext();
+    }
+
+    @Test
+    @DisplayName("토큰 없으면 통과")
+    void noToken_Pass() throws Exception {
+        when(rq.getCookieValue("accessToken", "")).thenReturn("");
+
+        filter.doFilterInternal(request, response, filterChain);
+
+        verify(filterChain).doFilter(request, response);
+        assertNull(SecurityContextHolder.getContext().getAuthentication());
+    }
+
+    @Test
+    @DisplayName("유효한 토큰으로 인증 성공")
+    void validToken_Success() throws Exception {
+        String token = "valid.token";
+        when(rq.getCookieValue("accessToken", "")).thenReturn(token);
+        when(jwtUtil.validateAccessToken(token)).thenReturn(true);
+        when(jwtUtil.getUserIdFromToken(token)).thenReturn(1L);
+        when(jwtUtil.getEmailFromToken(token)).thenReturn("[email protected]");
+        when(jwtUtil.getNicknameFromToken(token)).thenReturn("user");
+
+        filter.doFilterInternal(request, response, filterChain);
+
+        verify(filterChain).doFilter(request, response);
+        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+        assertNotNull(auth);
+        assertInstanceOf(SecurityUser.class, auth.getPrincipal());
+    }
+
+    @Test
+    @DisplayName("무효한 토큰은 통과")
+    void invalidToken_Pass() throws Exception {
+        String token = "invalid.token";
+        when(rq.getCookieValue("accessToken", "")).thenReturn(token);
+        when(jwtUtil.validateAccessToken(token)).thenReturn(false);
+
+        filter.doFilterInternal(request, response, filterChain);
+
+        verify(filterChain).doFilter(request, response);
+        assertNull(SecurityContextHolder.getContext().getAuthentication());
+    }
+}