Merge pull request #43334 from BenchmarkingBuffalo

* pr/43334:
  Polish "Make UserDetailsServiceAutoConfiguration conditional on servlet app"
  Make UserDetailsServiceAutoConfiguration conditional on servlet app

Closes gh-43334

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/servlet/UserDetailsServiceAutoConfiguration.java

@@ -31,6 +31,8 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
 import org.springframework.boot.autoconfigure.security.SecurityProperties;
 import org.springframework.boot.autoconfigure.security.servlet.UserDetailsServiceAutoConfiguration.MissingAlternativeOrUserPropertiesConfigured;
 import org.springframework.context.annotation.Bean;
@@ -53,6 +55,7 @@ import org.springframework.util.StringUtils;
  * @author Dave Syer
  * @author Rob Winch
  * @author Madhura Bhave
+ * @author Lasse Wulff
  * @since 2.0.0
  */
 @AutoConfiguration
@@ -61,6 +64,7 @@ import org.springframework.util.StringUtils;
 @ConditionalOnBean(ObjectPostProcessor.class)
 @ConditionalOnMissingBean(value = { AuthenticationManager.class, AuthenticationProvider.class, UserDetailsService.class,
 		AuthenticationManagerResolver.class }, type = "org.springframework.security.oauth2.jwt.JwtDecoder")
+@ConditionalOnWebApplication(type = Type.SERVLET)
 public class UserDetailsServiceAutoConfiguration {
 
 	private static final String NOOP_PASSWORD_PREFIX = "{noop}";

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/servlet/UserDetailsServiceAutoConfigurationTests.java

@@ -27,6 +27,8 @@ import org.springframework.boot.autoconfigure.security.SecurityProperties;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.boot.test.context.FilteredClassLoader;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
 import org.springframework.boot.test.system.CapturedOutput;
 import org.springframework.boot.test.system.OutputCaptureExtension;
 import org.springframework.context.annotation.Bean;
@@ -56,17 +58,41 @@ import static org.mockito.Mockito.mock;
  *
  * @author Madhura Bhave
  * @author HaiTao Zhang
+ * @author Lasse Wulff
+ * @author Moritz Halbritter
  */
 @ExtendWith(OutputCaptureExtension.class)
 class UserDetailsServiceAutoConfigurationTests {
 
-	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
 		.withUserConfiguration(TestSecurityConfiguration.class)
 		.withConfiguration(AutoConfigurations.of(UserDetailsServiceAutoConfiguration.class));
 
+	@Test
+	void shouldSupplyUserDetailsServiceInServletApp() {
+		this.contextRunner.with(AuthenticationExclude.servletApp())
+			.run((context) -> assertThat(context).hasSingleBean(UserDetailsService.class));
+	}
+
+	@Test
+	void shouldNotSupplyUserDetailsServiceInReactiveApp() {
+		new ReactiveWebApplicationContextRunner().withUserConfiguration(TestSecurityConfiguration.class)
+			.withConfiguration(AutoConfigurations.of(UserDetailsServiceAutoConfiguration.class))
+			.with(AuthenticationExclude.reactiveApp())
+			.run((context) -> assertThat(context).doesNotHaveBean(UserDetailsService.class));
+	}
+
+	@Test
+	void shouldNotSupplyUserDetailsServiceInNonWebApp() {
+		new ApplicationContextRunner().withUserConfiguration(TestSecurityConfiguration.class)
+			.withConfiguration(AutoConfigurations.of(UserDetailsServiceAutoConfiguration.class))
+			.with(AuthenticationExclude.noWebApp())
+			.run((context) -> assertThat(context).doesNotHaveBean(UserDetailsService.class));
+	}
+
 	@Test
 	void testDefaultUsernamePassword(CapturedOutput output) {
-		this.contextRunner.with(noOtherFormsOfAuthenticationOnTheClasspath()).run((context) -> {
+		this.contextRunner.with(AuthenticationExclude.servletApp()).run((context) -> {
 			UserDetailsService manager = context.getBean(UserDetailsService.class);
 			assertThat(output).contains("Using generated security password:");
 			assertThat(manager.loadUserByUsername("user")).isNotNull();
@@ -128,7 +154,7 @@ class UserDetailsServiceAutoConfigurationTests {
 
 	@Test
 	void userDetailsServiceWhenPasswordEncoderAbsentAndDefaultPassword() {
-		this.contextRunner.with(noOtherFormsOfAuthenticationOnTheClasspath())
+		this.contextRunner.with(AuthenticationExclude.servletApp())
 			.withUserConfiguration(TestSecurityConfiguration.class)
 			.run(((context) -> {
 				InMemoryUserDetailsManager userDetailsService = context.getBean(InMemoryUserDetailsManager.class);
@@ -192,14 +218,8 @@ class UserDetailsServiceAutoConfigurationTests {
 			.run(((context) -> assertThat(context).hasSingleBean(InMemoryUserDetailsManager.class)));
 	}
 
-	private Function<ApplicationContextRunner, ApplicationContextRunner> noOtherFormsOfAuthenticationOnTheClasspath() {
-		return (contextRunner) -> contextRunner
-			.withClassLoader(new FilteredClassLoader(ClientRegistrationRepository.class, OpaqueTokenIntrospector.class,
-					RelyingPartyRegistrationRepository.class));
-	}
-
 	private void testPasswordEncoding(Class<?> configClass, String providedPassword, String expectedPassword) {
-		this.contextRunner.with(noOtherFormsOfAuthenticationOnTheClasspath())
+		this.contextRunner.with(AuthenticationExclude.servletApp())
 			.withClassLoader(new FilteredClassLoader(ClientRegistrationRepository.class, OpaqueTokenIntrospector.class,
 					RelyingPartyRegistrationRepository.class))
 			.withUserConfiguration(configClass)
@@ -211,6 +231,26 @@ class UserDetailsServiceAutoConfigurationTests {
 			}));
 	}
 
+	private static final class AuthenticationExclude {
+
+		private static final FilteredClassLoader filteredClassLoader = new FilteredClassLoader(
+				ClientRegistrationRepository.class, OpaqueTokenIntrospector.class,
+				RelyingPartyRegistrationRepository.class);
+
+		static Function<WebApplicationContextRunner, WebApplicationContextRunner> servletApp() {
+			return (contextRunner) -> contextRunner.withClassLoader(filteredClassLoader);
+		}
+
+		static Function<ReactiveWebApplicationContextRunner, ReactiveWebApplicationContextRunner> reactiveApp() {
+			return (contextRunner) -> contextRunner.withClassLoader(filteredClassLoader);
+		}
+
+		static Function<ApplicationContextRunner, ApplicationContextRunner> noWebApp() {
+			return (contextRunner) -> contextRunner.withClassLoader(filteredClassLoader);
+		}
+
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	static class TestAuthenticationManagerConfiguration {