feat : adds Security Test (#778)

retail-store-webapp/src/test/java/com/example/retailstore/webapp/services/SecurityHelperTest.java

@@ -0,0 +1,45 @@
+package com.example.retailstore.webapp.services;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.oauth2.client.authentication.OAuth2AuthenticationToken;
+import org.springframework.security.oauth2.core.oidc.user.DefaultOidcUser;
+
+class SecurityHelperTest {
+
+    @Test
+    void testGetLoggedInUserEmail_Success() {
+        // Setup
+        SecurityHelper securityHelper =
+                new SecurityHelper(null); // OAuth2AuthorizedClientService is not used in this method
+        OAuth2AuthenticationToken oauthToken = mock(OAuth2AuthenticationToken.class);
+        DefaultOidcUser user = mock(DefaultOidcUser.class);
+        given(user.getEmail()).willReturn("[email protected]");
+        given(oauthToken.getPrincipal()).willReturn(user);
+        SecurityContextHolder.getContext().setAuthentication(oauthToken);
+
+        // Execute
+        String email = securityHelper.getLoggedInUserEmail();
+
+        // Verify
+        assertThat(email).isEqualTo("[email protected]");
+    }
+
+    @Test
+    void testGetLoggedInUserEmail_Failure() {
+        // Setup
+        SecurityHelper securityHelper =
+                new SecurityHelper(null); // OAuth2AuthorizedClientService is not used in this method
+        SecurityContextHolder.getContext().setAuthentication(null);
+
+        // Execute
+        String email = securityHelper.getLoggedInUserEmail();
+
+        // Verify
+        assertThat(email).isNull();
+    }
+}