diff --git a/dsms-engine-application/src/test/java/com/dsms/common/handler/AuthenticationEntryPointImplTest.java b/dsms-engine-application/src/test/java/com/dsms/common/handler/AuthenticationEntryPointImplTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..ab6e54169a9bcb4cc3f49aa1b21c1f81610ef18b
--- /dev/null
+++ b/dsms-engine-application/src/test/java/com/dsms/common/handler/AuthenticationEntryPointImplTest.java
@@ -0,0 +1,30 @@
+package com.dsms.common.handler;
+
+import com.dsms.common.constant.ResultCode;
+import java.io.PrintWriter;
+import java.nio.charset.StandardCharsets;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import lombok.SneakyThrows;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.security.authentication.BadCredentialsException;
+
+class AuthenticationEntryPointImplTest {
+
+    @Test
+    @SneakyThrows
+    void commence() {
+        HttpServletRequest request = Mockito.mock(HttpServletRequest.class);
+        HttpServletResponse response = Mockito.mock(HttpServletResponse.class);
+        PrintWriter printWriter = Mockito.mock(PrintWriter.class);
+        Mockito.when(response.getWriter()).thenReturn(printWriter);
+
+        AuthenticationEntryPointImpl authenticationEntryPoint = new AuthenticationEntryPointImpl();
+
+        authenticationEntryPoint.commence(request, response, new BadCredentialsException("bad credentials"));
+
+        Mockito.verify(response).setStatus(ResultCode.UNAUTHORIZED.getCode());
+        Mockito.verify(response).setCharacterEncoding(StandardCharsets.UTF_8.displayName());
+    }
+}
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