diff --git a/spring-tx/src/test/java/org/springframework/transaction/support/TransactionSupportTests.java b/spring-tx/src/test/java/org/springframework/transaction/support/TransactionSupportTests.java
index 4a7dd6ebf59..3e604d73b7d 100644
--- a/spring-tx/src/test/java/org/springframework/transaction/support/TransactionSupportTests.java
+++ b/spring-tx/src/test/java/org/springframework/transaction/support/TransactionSupportTests.java
@@ -16,22 +16,36 @@
 
 package org.springframework.transaction.support;
 
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Stream;
+
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
-import org.springframework.transaction.*;
+
+import org.springframework.transaction.IllegalTransactionStateException;
+import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.transaction.TransactionDefinition;
+import org.springframework.transaction.TransactionStatus;
+import org.springframework.transaction.TransactionSystemException;
 import org.springframework.transaction.testfixture.MockCallbackPreferringTransactionManager;
 import org.springframework.transaction.testfixture.TestTransactionExecutionListener;
 import org.springframework.util.ReflectionUtils;
 
-import java.lang.reflect.Field;
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.stream.Stream;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.assertj.core.api.Assertions.assertThatRuntimeException;
+import static org.springframework.transaction.TransactionDefinition.ISOLATION_READ_COMMITTED;
+import static org.springframework.transaction.TransactionDefinition.ISOLATION_REPEATABLE_READ;
+import static org.springframework.transaction.TransactionDefinition.ISOLATION_SERIALIZABLE;
+import static org.springframework.transaction.TransactionDefinition.PROPAGATION_MANDATORY;
+import static org.springframework.transaction.TransactionDefinition.PROPAGATION_REQUIRED;
+import static org.springframework.transaction.TransactionDefinition.PROPAGATION_SUPPORTS;
 
-import static org.assertj.core.api.Assertions.*;
-import static org.springframework.transaction.TransactionDefinition.*;
 import static org.springframework.transaction.support.AbstractPlatformTransactionManager.SYNCHRONIZATION_ALWAYS;
 import static org.springframework.transaction.support.AbstractPlatformTransactionManager.SYNCHRONIZATION_ON_ACTUAL_TRANSACTION;
 import static org.springframework.transaction.support.DefaultTransactionDefinition.PREFIX_ISOLATION;