Test security dialect auto-config without Spring Security

Closes gh-31097

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/thymeleaf/ThymeleafReactiveAutoConfigurationTests.java

@@ -27,6 +27,7 @@ import org.junit.jupiter.api.extension.ExtendWith;
 import org.thymeleaf.TemplateEngine;
 import org.thymeleaf.context.Context;
 import org.thymeleaf.context.IContext;
+import org.thymeleaf.extras.springsecurity5.dialect.SpringSecurityDialect;
 import org.thymeleaf.extras.springsecurity5.util.SpringSecurityContextUtils;
 import org.thymeleaf.spring5.ISpringWebFluxTemplateEngine;
 import org.thymeleaf.spring5.SpringWebFluxTemplateEngine;
@@ -36,6 +37,7 @@ import org.thymeleaf.spring5.view.reactive.ThymeleafReactiveViewResolver;
 import org.thymeleaf.templateresolver.ITemplateResolver;
 
 import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.FilteredClassLoader;
 import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
 import org.springframework.boot.test.system.CapturedOutput;
 import org.springframework.boot.test.system.OutputCaptureExtension;
@@ -217,6 +219,12 @@ class ThymeleafReactiveAutoConfigurationTests {
 		});
 	}
 
+	@Test
+	void securityDialectAutoConfigurationBacksOffWithoutSpringSecurity() {
+		this.contextRunner.withClassLoader(new FilteredClassLoader("org.springframework.security"))
+				.run((context) -> assertThat(context).doesNotHaveBean(SpringSecurityDialect.class));
+	}
+
 	@Test
 	void renderTemplate() {
 		this.contextRunner.run((context) -> {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/thymeleaf/ThymeleafServletAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -31,6 +31,7 @@ import org.junit.jupiter.api.extension.ExtendWith;
 import org.thymeleaf.TemplateEngine;
 import org.thymeleaf.context.Context;
 import org.thymeleaf.context.WebContext;
+import org.thymeleaf.extras.springsecurity5.dialect.SpringSecurityDialect;
 import org.thymeleaf.spring5.SpringTemplateEngine;
 import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
 import org.thymeleaf.spring5.view.ThymeleafView;
@@ -231,6 +232,12 @@ class ThymeleafServletAutoConfigurationTests {
 		});
 	}
 
+	@Test
+	void securityDialectAutoConfigurationBacksOffWithoutSpringSecurity() {
+		this.contextRunner.withClassLoader(new FilteredClassLoader("org.springframework.security"))
+				.run((context) -> assertThat(context).doesNotHaveBean(SpringSecurityDialect.class));
+	}
+
 	@Test
 	void renderTemplate() {
 		this.contextRunner.run((context) -> {