Merge branch '2.7.x' into main

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/filter/ErrorPageSecurityFilter.java

@@ -30,6 +30,7 @@ import jakarta.servlet.http.HttpServletResponse;
 
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.ApplicationContext;
+import org.springframework.security.authentication.AnonymousAuthenticationToken;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.web.access.WebInvocationPrivilegeEvaluator;
@@ -62,17 +63,28 @@ public class ErrorPageSecurityFilter implements Filter {
 
 	private void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
 			throws IOException, ServletException {
-		if (DispatcherType.ERROR.equals(request.getDispatcherType()) && !isAllowed(request)) {
-			sendError(request, response);
+		Integer errorCode = (Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
+		if (DispatcherType.ERROR.equals(request.getDispatcherType()) && !isAllowed(request, errorCode)) {
+			response.sendError((errorCode != null) ? errorCode : 401);
 			return;
 		}
 		chain.doFilter(request, response);
 	}
 
-	private boolean isAllowed(HttpServletRequest request) {
-		String uri = request.getRequestURI();
+	private boolean isAllowed(HttpServletRequest request, Integer errorCode) {
 		Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
-		return getPrivilegeEvaluator().isAllowed(uri, authentication);
+		if (isUnauthenticated(authentication) && isNotAuthenticationError(errorCode)) {
+			return true;
+		}
+		return getPrivilegeEvaluator().isAllowed(request.getRequestURI(), authentication);
+	}
+
+	private boolean isUnauthenticated(Authentication authentication) {
+		return (authentication == null || authentication instanceof AnonymousAuthenticationToken);
+	}
+
+	private boolean isNotAuthenticationError(Integer errorCode) {
+		return (errorCode == null || (errorCode != 401 && errorCode != 403));
 	}
 
 	private WebInvocationPrivilegeEvaluator getPrivilegeEvaluator() {
@@ -93,11 +105,6 @@ public class ErrorPageSecurityFilter implements Filter {
 		}
 	}
 
-	private void sendError(HttpServletRequest request, HttpServletResponse response) throws IOException {
-		Integer errorCode = (Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
-		response.sendError((errorCode != null) ? errorCode : 401);
-	}
-
 	/**
 	 * {@link WebInvocationPrivilegeEvaluator} that always allows access.
 	 */

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/filter/ErrorPageSecurityFilterTests.java

@@ -20,6 +20,7 @@ import jakarta.servlet.DispatcherType;
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.RequestDispatcher;
 
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -27,6 +28,9 @@ import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.mock.web.MockHttpServletRequest;
 import org.springframework.mock.web.MockHttpServletResponse;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.web.access.WebInvocationPrivilegeEvaluator;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -64,6 +68,11 @@ class ErrorPageSecurityFilterTests {
 		this.securityFilter = new ErrorPageSecurityFilter(this.context);
 	}
 
+	@AfterEach
+	void tearDown() {
+		SecurityContextHolder.clearContext();
+	}
+
 	@Test
 	void whenAccessIsAllowedShouldContinueDownFilterChain() throws Exception {
 		given(this.privilegeEvaluator.isAllowed(anyString(), any())).willReturn(true);
@@ -83,6 +92,9 @@ class ErrorPageSecurityFilterTests {
 	@Test
 	void whenAccessIsDeniedAndNoErrorCodeAttributeOnRequest() throws Exception {
 		given(this.privilegeEvaluator.isAllowed(anyString(), any())).willReturn(false);
+		SecurityContext securityContext = mock(SecurityContext.class);
+		SecurityContextHolder.setContext(securityContext);
+		given(securityContext.getAuthentication()).willReturn(mock(Authentication.class));
 		this.securityFilter.doFilter(this.request, this.response, this.filterChain);
 		verifyNoInteractions(this.filterChain);
 		assertThat(this.response.getStatus()).isEqualTo(401);

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-actuator-custom-security/src/test/java/smoketest/actuator/customsecurity/SampleActuatorCustomSecurityApplicationTests.java

@@ -66,7 +66,8 @@ class SampleActuatorCustomSecurityApplicationTests extends AbstractSampleActuato
 	void testInsecureApplicationPath() {
 		ResponseEntity<Map> entity = restTemplate().getForEntity(getPath() + "/foo", Map.class);
 		assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR);
-		assertThat(entity.getBody()).isNull();
+		Map<String, Object> body = entity.getBody();
+		assertThat((String) body.get("message")).contains("Expected exception in controller");
 	}
 
 	@Test

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/main/java/smoketest/web/secure/SampleWebSecureApplication.java

@@ -18,10 +18,6 @@ package smoketest.web.secure;
 
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.builder.SpringApplicationBuilder;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@@ -38,21 +34,4 @@ public class SampleWebSecureApplication implements WebMvcConfigurer {
 		new SpringApplicationBuilder(SampleWebSecureApplication.class).run(args);
 	}
 
-	@Configuration(proxyBeanMethods = false)
-	protected static class ApplicationSecurity {
-
-		@Bean
-		SecurityFilterChain configure(HttpSecurity http) throws Exception {
-			http.csrf().disable();
-			http.authorizeRequests((requests) -> {
-				requests.antMatchers("/public/**").permitAll();
-				requests.anyRequest().fullyAuthenticated();
-			});
-			http.httpBasic();
-			http.formLogin((form) -> form.loginPage("/login").permitAll());
-			return http.build();
-		}
-
-	}
-
 }

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/test/java/smoketest/web/secure/AbstractErrorPageTests.java

@@ -0,0 +1,127 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.web.secure;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Abstract base class for tests to ensure that the error page is accessible only to
+ * authorized users.
+ *
+ * @author Madhura Bhave
+ */
+abstract class AbstractErrorPageTests {
+
+	@Autowired
+	private TestRestTemplate testRestTemplate;
+
+	@Test
+	void testBadCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "wrongpassword")
+				.exchange("/test", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse).isNull();
+	}
+
+	@Test
+	void testNoCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/test", HttpMethod.GET, null,
+				JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse).isNull();
+	}
+
+	@Test
+	void testPublicNotFoundPage() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/public/notfound", HttpMethod.GET,
+				null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Not Found");
+	}
+
+	@Test
+	void testPublicNotFoundPageWithCorrectCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/public/notfound", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Not Found");
+	}
+
+	@Test
+	void testPublicNotFoundPageWithBadCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "wrong")
+				.exchange("/public/notfound", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse).isNull();
+	}
+
+	@Test
+	void testCorrectCredentialsWithControllerException() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/fail", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Internal Server Error");
+	}
+
+	@Test
+	void testCorrectCredentials() {
+		final ResponseEntity<String> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/test", HttpMethod.GET, null, String.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
+		response.getBody();
+		assertThat(response.getBody()).isEqualTo("test");
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TestConfiguration {
+
+		@RestController
+		static class TestController {
+
+			@GetMapping("/test")
+			String test() {
+				return "test";
+			}
+
+			@GetMapping("/fail")
+			String fail() {
+				throw new RuntimeException();
+			}
+
+		}
+
+	}
+
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/test/java/smoketest/web/secure/ErrorPageTests.java

@@ -16,21 +16,11 @@
 
 package smoketest.web.secure;
 
-import com.fasterxml.jackson.databind.JsonNode;
-import org.junit.jupiter.api.Test;
-
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
-import org.springframework.boot.test.web.client.TestRestTemplate;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.http.HttpMethod;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import static org.assertj.core.api.Assertions.assertThat;
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.web.SecurityFilterChain;
 
 /**
  * Tests to ensure that the error page is accessible only to authorized users.
@@ -38,61 +28,24 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Madhura Bhave
  */
 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
-		classes = { ErrorPageTests.TestConfiguration.class, SampleWebSecureApplication.class },
+		classes = { AbstractErrorPageTests.TestConfiguration.class, ErrorPageTests.SecurityConfiguration.class,
+				SampleWebSecureApplication.class },
 		properties = { "server.error.include-message=always", "spring.security.user.name=username",
 				"spring.security.user.password=password" })
-class ErrorPageTests {
+class ErrorPageTests extends AbstractErrorPageTests {
 
-	@Autowired
-	private TestRestTemplate testRestTemplate;
-
-	@Test
-	void testBadCredentials() {
-		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "wrongpassword")
-				.exchange("/test", HttpMethod.GET, null, JsonNode.class);
-		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
-		JsonNode jsonResponse = response.getBody();
-		assertThat(jsonResponse).isNull();
-	}
-
-	@Test
-	void testNoCredentials() {
-		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/test", HttpMethod.GET, null,
-				JsonNode.class);
-		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
-		JsonNode jsonResponse = response.getBody();
-		assertThat(jsonResponse).isNull();
-	}
-
-	@Test
-	void testPublicNotFoundPage() {
-		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/public/notfound", HttpMethod.GET,
-				null, JsonNode.class);
-		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
-		JsonNode jsonResponse = response.getBody();
-		assertThat(jsonResponse).isNull();
-	}
-
-	@Test
-	void testCorrectCredentials() {
-		final ResponseEntity<String> response = this.testRestTemplate.withBasicAuth("username", "password")
-				.exchange("/test", HttpMethod.GET, null, String.class);
-		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
-		response.getBody();
-		assertThat(response.getBody()).isEqualTo("test");
-	}
-
-	@Configuration(proxyBeanMethods = false)
-	static class TestConfiguration {
-
-		@RestController
-		static class TestController {
-
-			@GetMapping("/test")
-			String test() {
-				return "test";
-			}
+	@org.springframework.boot.test.context.TestConfiguration(proxyBeanMethods = false)
+	static class SecurityConfiguration {
 
+		@Bean
+		SecurityFilterChain configure(HttpSecurity http) throws Exception {
+			http.authorizeRequests((requests) -> {
+				requests.antMatchers("/public/**").permitAll();
+				requests.anyRequest().fullyAuthenticated();
+			});
+			http.httpBasic();
+			http.formLogin((form) -> form.loginPage("/login").permitAll());
+			return http.build();
 		}
 
 	}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/test/java/smoketest/web/secure/NoSessionErrorPageTests.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.web.secure;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.web.SecurityFilterChain;
+
+/**
+ * Tests for error page when a stateless session creation policy is used.
+ *
+ * @author Madhura Bhave
+ */
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
+		classes = { AbstractErrorPageTests.TestConfiguration.class, NoSessionErrorPageTests.SecurityConfiguration.class,
+				SampleWebSecureApplication.class },
+		properties = { "server.error.include-message=always", "spring.security.user.name=username",
+				"spring.security.user.password=password" })
+class NoSessionErrorPageTests extends AbstractErrorPageTests {
+
+	@org.springframework.boot.test.context.TestConfiguration(proxyBeanMethods = false)
+	static class SecurityConfiguration {
+
+		@Bean
+		SecurityFilterChain defaultSecurityFilterChain(HttpSecurity http) throws Exception {
+			http.sessionManagement((session) -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+					.authorizeRequests((requests) -> {
+						requests.antMatchers("/public/**").permitAll();
+						requests.anyRequest().authenticated();
+					});
+			http.httpBasic();
+			return http.build();
+		}
+
+	}
+
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/test/java/smoketest/web/secure/SampleWebSecureApplicationTests.java

@@ -25,12 +25,15 @@ import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.context.annotation.Bean;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 
@@ -42,7 +45,8 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Dave Syer
  * @author Scott Frederick
  */
-@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
+		classes = { SampleWebSecureApplicationTests.SecurityConfiguration.class, SampleWebSecureApplication.class })
 class SampleWebSecureApplicationTests {
 
 	@Autowired
@@ -85,4 +89,21 @@ class SampleWebSecureApplicationTests {
 		assertThat(entity.getHeaders().getLocation().toString()).endsWith(this.port + "/");
 	}
 
+	@org.springframework.boot.test.context.TestConfiguration(proxyBeanMethods = false)
+	static class SecurityConfiguration {
+
+		@Bean
+		SecurityFilterChain configure(HttpSecurity http) throws Exception {
+			http.csrf().disable();
+			http.authorizeRequests((requests) -> {
+				requests.antMatchers("/public/**").permitAll();
+				requests.anyRequest().fullyAuthenticated();
+			});
+			http.httpBasic();
+			http.formLogin((form) -> form.loginPage("/login").permitAll());
+			return http.build();
+		}
+
+	}
+
 }

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-web-secure/src/test/java/smoketest/web/secure/UnauthenticatedErrorPageTests.java

@@ -0,0 +1,128 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.web.secure;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.web.SecurityFilterChain;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for error page that permits access to all.
+ *
+ * @author Madhura Bhave
+ */
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
+		classes = { AbstractErrorPageTests.TestConfiguration.class,
+				UnauthenticatedErrorPageTests.SecurityConfiguration.class, SampleWebSecureApplication.class },
+		properties = { "server.error.include-message=always", "spring.security.user.name=username",
+				"spring.security.user.password=password" })
+class UnauthenticatedErrorPageTests {
+
+	@Autowired
+	private TestRestTemplate testRestTemplate;
+
+	@Test
+	void testBadCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "wrongpassword")
+				.exchange("/test", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Unauthorized");
+	}
+
+	@Test
+	void testNoCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/test", HttpMethod.GET, null,
+				JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Unauthorized");
+	}
+
+	@Test
+	void testPublicNotFoundPage() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.exchange("/public/notfound", HttpMethod.GET,
+				null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Not Found");
+	}
+
+	@Test
+	void testPublicNotFoundPageWithCorrectCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/public/notfound", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Not Found");
+	}
+
+	@Test
+	void testPublicNotFoundPageWithBadCredentials() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "wrong")
+				.exchange("/public/notfound", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Unauthorized");
+	}
+
+	@Test
+	void testCorrectCredentialsWithControllerException() {
+		final ResponseEntity<JsonNode> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/fail", HttpMethod.GET, null, JsonNode.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR);
+		JsonNode jsonResponse = response.getBody();
+		assertThat(jsonResponse.get("error").asText()).isEqualTo("Internal Server Error");
+	}
+
+	@Test
+	void testCorrectCredentials() {
+		final ResponseEntity<String> response = this.testRestTemplate.withBasicAuth("username", "password")
+				.exchange("/test", HttpMethod.GET, null, String.class);
+		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
+		assertThat(response.getBody()).isEqualTo("test");
+	}
+
+	@org.springframework.boot.test.context.TestConfiguration(proxyBeanMethods = false)
+	static class SecurityConfiguration {
+
+		@Bean
+		SecurityFilterChain defaultSecurityFilterChain(HttpSecurity http) throws Exception {
+			http.authorizeRequests((requests) -> {
+				requests.antMatchers("/error").permitAll();
+				requests.antMatchers("/public/**").permitAll();
+				requests.anyRequest().authenticated();
+			});
+			http.httpBasic();
+			return http.build();
+		}
+
+	}
+
+}