Add tests

Author: markusheiden

web/src/main/java/org/springframework/security/web/jackson2/WebServletJackson2Module.java

@@ -16,15 +16,16 @@
 
 package org.springframework.security.web.jackson2;
 
-import com.fasterxml.jackson.core.Version;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import jakarta.servlet.http.Cookie;
-
 import org.springframework.security.jackson2.SecurityJackson2Modules;
 import org.springframework.security.web.authentication.WebAuthenticationDetails;
+import org.springframework.security.web.authentication.switchuser.SwitchUserGrantedAuthority;
 import org.springframework.security.web.savedrequest.DefaultSavedRequest;
 import org.springframework.security.web.savedrequest.SavedCookie;
 
+import com.fasterxml.jackson.core.Version;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import jakarta.servlet.http.Cookie;
+
 /**
  * Jackson module for spring-security-web related to servlet. This module register
  * {@link CookieMixin}, {@link SavedCookieMixin}, {@link DefaultSavedRequestMixin} and
@@ -56,6 +57,7 @@ public void setupModule(SetupContext context) {
 		context.setMixInAnnotations(SavedCookie.class, SavedCookieMixin.class);
 		context.setMixInAnnotations(DefaultSavedRequest.class, DefaultSavedRequestMixin.class);
 		context.setMixInAnnotations(WebAuthenticationDetails.class, WebAuthenticationDetailsMixin.class);
+		context.setMixInAnnotations(SwitchUserGrantedAuthority.class, SwitchUserGrantedAuthorityMixIn.class);
 	}
 
 }

web/src/test/java/org/springframework/security/web/jackson2/SwitchUserGrantedAuthorityMixInTest.java

@@ -0,0 +1,62 @@
+package org.springframework.security.web.jackson2;
+
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.jackson2.AbstractMixinTests;
+import org.springframework.security.jackson2.SimpleGrantedAuthorityMixinTests;
+import org.springframework.security.web.authentication.switchuser.SwitchUserGrantedAuthority;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.skyscreamer.jsonassert.JSONAssert;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Markus Heiden
+ * @since 5.8
+ */
+public class SwitchUserGrantedAuthorityMixInTest extends AbstractMixinTests {
+
+	// language=JSON
+	private static final String SWITCH_JSON = """
+        {
+          "@class": "org.springframework.security.web.authentication.switchuser.SwitchUserGrantedAuthority",
+          "role": "switched",
+          "source": {
+			  "@class": "org.springframework.security.authentication.UsernamePasswordAuthenticationToken",
+			  "principal": "principal",
+			  "credentials": "credentials",
+			  "authenticated": true,
+			  "details": null,
+			  "authorities": %s
+          }
+        }
+		""".formatted(SimpleGrantedAuthorityMixinTests.AUTHORITIES_ARRAYLIST_JSON);
+	SwitchUserGrantedAuthority expected;
+	Authentication source;
+
+	@BeforeEach
+	public void setupExpected() {
+		this.source = new UsernamePasswordAuthenticationToken(
+				"principal", "credentials",
+				AuthorityUtils.createAuthorityList("ROLE_USER"));
+		this.expected = new SwitchUserGrantedAuthority("switched", this.source);
+	}
+
+	@Test
+	public void serializeWhenPrincipalCredentialsAuthoritiesThenSuccess() throws Exception {
+		String serializedJson = this.mapper.writeValueAsString(this.expected);
+		JSONAssert.assertEquals(SWITCH_JSON, serializedJson, true);
+	}
+
+	@Test
+	public void deserializeAuthenticatedUsernamePasswordAuthenticationTokenMixinTest() throws Exception {
+		SwitchUserGrantedAuthority deserialized = this.mapper.readValue(SWITCH_JSON, SwitchUserGrantedAuthority.class);
+		assertThat(deserialized).isNotNull();
+		assertThat(deserialized.getAuthority()).isEqualTo("switched");
+		assertThat(deserialized.getSource()).isEqualTo(this.source);
+	}
+
+}