feat: SecurityContextHolder Test 코드 작성

server/src/test/java/com/ticketing/server/global/security/SecurityContextHolderTest.java

@@ -0,0 +1,66 @@
+package com.ticketing.server.global.security;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+import org.junit.jupiter.api.AfterEach;
+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.junit.jupiter.MockitoExtension;
+import org.springframework.security.authentication.TestingAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+@ExtendWith(MockitoExtension.class)
+class SecurityContextHolderTest {
+
+	private static final String ANY_USER = "ticketing";
+	private static final String ANY_PASSWORD = "password";
+	private static final String ROLE_GUEST = "ROLE_GUEST";
+
+	@BeforeEach
+	void init() {
+		SecurityContextHolder.setStrategyName(SecurityContextHolder.MODE_THREADLOCAL);
+		setMockAuthentication();
+	}
+
+	@AfterEach
+	void clear() {
+		SecurityContextHolder.clearContext();
+	}
+
+	@Test
+	@DisplayName("SecurityContextHolder 에 현재 인증된 사용자 정보를 확인한다.")
+	void SecurityContextHolder() {
+		// given
+		Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+
+		// when
+		// then
+		assertAll(
+			() -> assertThat(authentication.isAuthenticated()).isTrue()
+			, () -> assertThat(authentication.getName()).isEqualTo(ANY_USER)
+			, () -> assertThat(authentication.getCredentials()).isEqualTo(ANY_PASSWORD)
+			, () -> assertThat(authentication.getAuthorities())
+				.extracting(GrantedAuthority::getAuthority)
+				.contains(ROLE_GUEST)
+		);
+
+	}
+
+
+	private void setMockAuthentication() {
+		SecurityContext context = SecurityContextHolder.createEmptyContext();
+
+		TestingAuthenticationToken mockAuthentication
+			= new TestingAuthenticationToken(SecurityContextHolderTest.ANY_USER, SecurityContextHolderTest.ANY_PASSWORD, SecurityContextHolderTest.ROLE_GUEST);
+		context.setAuthentication(mockAuthentication);
+
+		SecurityContextHolder.setContext(context);
+	}
+
+}