Move Integration Test from Spring LDAP

Closes gh-18874

Signed-off-by: Josh Cummings <3627351+jzheaux@users.noreply.github.com>

config/src/integration-test/java/org/springframework/security/config/ldap/Ldap247ITests.java

@@ -0,0 +1,126 @@
+package org.springframework.security.config.ldap;
+
+import javax.naming.Name;
+
+import org.junit.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.ldap.core.DistinguishedName;
+import org.springframework.ldap.core.support.BaseLdapPathAware;
+import org.springframework.ldap.core.support.BaseLdapPathBeanPostProcessor;
+import org.springframework.ldap.core.support.BaseLdapPathContextSource;
+import org.springframework.security.access.expression.method.DefaultMethodSecurityExpressionHandler;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.test.SpringTestContext;
+import org.springframework.security.config.test.SpringTestContextExtension;
+import org.springframework.security.ldap.DefaultSpringSecurityContextSource;
+import org.springframework.security.ldap.server.UnboundIdContainer;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ExtendWith(SpringTestContextExtension.class)
+public class Ldap247ITests {
+
+	public final SpringTestContext spring = new SpringTestContext(this);
+
+	@Autowired
+	private LdapGroupDao ldapGroupDao;
+
+	@Test
+	public void verifyThatBasePathIsProperlyPopulated() {
+		this.spring.register(FromContextSourceConfig.class).autowire();
+		assertThat(this.ldapGroupDao).isNotNull();
+		assertThat(this.ldapGroupDao.getBasePath()).isNotNull();
+	}
+
+	@Configuration
+	@EnableMethodSecurity
+	@Import(BaseLdapServerConfig.class)
+	static class FromContextSourceConfig {
+
+		@Bean
+		AuthenticationManager authenticationManager(BaseLdapPathContextSource contextSource) {
+			LdapBindAuthenticationManagerFactory factory = new LdapBindAuthenticationManagerFactory(contextSource);
+			factory.setUserDnPatterns("uid={0},ou=people");
+			return factory.createAuthenticationManager();
+		}
+
+		@Bean
+		static MethodSecurityExpressionHandler securityExpressionHandler(LdapGroupDao ldap) {
+			return new MethodSecurityExpressionHandler(ldap);
+		}
+
+		@Bean
+		static LdapGroupDao ldapGroupDao() {
+			return new LdapGroupDao();
+		}
+
+		@Bean
+		static BaseLdapPathBeanPostProcessor baseLdapPathBeanPostProcessor() {
+			return new BaseLdapPathBeanPostProcessor();
+		}
+
+	}
+
+	@Configuration
+	@EnableWebSecurity
+	static class BaseLdapServerConfig implements DisposableBean {
+
+		private UnboundIdContainer container;
+
+		@Bean
+		UnboundIdContainer ldapServer() {
+			this.container = new UnboundIdContainer("dc=springframework,dc=org", "classpath:/test-server.ldif");
+			this.container.setPort(0);
+			return this.container;
+		}
+
+		@Bean
+		BaseLdapPathContextSource contextSource(UnboundIdContainer container) {
+			int port = container.getPort();
+			return new DefaultSpringSecurityContextSource("ldap://localhost:" + port + "/dc=springframework,dc=org");
+		}
+
+		@Override
+		public void destroy() {
+			this.container.stop();
+		}
+
+	}
+
+	static class MethodSecurityExpressionHandler extends DefaultMethodSecurityExpressionHandler {
+
+		private final LdapGroupDao groupDao;
+
+		MethodSecurityExpressionHandler(LdapGroupDao groupDao) {
+			this.groupDao = groupDao;
+		}
+
+	}
+
+	static class LdapGroupDao implements BaseLdapPathAware {
+
+		private Name basePath;
+
+		LdapGroupDao() {
+			super();
+		}
+
+		@Override
+		public void setBaseLdapPath(DistinguishedName baseLdapPath) {
+			this.basePath = baseLdapPath;
+		}
+
+		public Name getBasePath() {
+			return this.basePath;
+		}
+	}
+
+}