diff --git a/src/test/java/tools/jackson/core/util/TestDefaultPrettyPrinter.java b/src/test/java/tools/jackson/core/util/DefaultPrettyPrinterTest.java
similarity index 99%
rename from src/test/java/tools/jackson/core/util/TestDefaultPrettyPrinter.java
rename to src/test/java/tools/jackson/core/util/DefaultPrettyPrinterTest.java
index 9e852385f9..f1cbc46e75 100644
--- a/src/test/java/tools/jackson/core/util/TestDefaultPrettyPrinter.java
+++ b/src/test/java/tools/jackson/core/util/DefaultPrettyPrinterTest.java
@@ -13,7 +13,7 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.fail;
 
-class TestDefaultPrettyPrinter extends JUnit5TestBase
+class DefaultPrettyPrinterTest extends JUnit5TestBase
 {
     private final JsonFactory JSON_F = new JsonFactory();
 
diff --git a/src/test/java/tools/jackson/core/util/TestSerializedString.java b/src/test/java/tools/jackson/core/util/SerializedStringTest.java
similarity index 99%
rename from src/test/java/tools/jackson/core/util/TestSerializedString.java
rename to src/test/java/tools/jackson/core/util/SerializedStringTest.java
index f9509eb148..167dbab04c 100644
--- a/src/test/java/tools/jackson/core/util/TestSerializedString.java
+++ b/src/test/java/tools/jackson/core/util/SerializedStringTest.java
@@ -15,7 +15,7 @@
  * Simple unit tests to try to verify that the default
  * {@link SerializableString} implementation works as expected.
  */
-class TestSerializedString
+class SerializedStringTest
     extends tools.jackson.core.JUnit5TestBase
 {
     private static final String QUOTED = "\\\"quo\\\\ted\\\"";
diff --git a/src/test/java/tools/jackson/core/util/TestTextBuffer.java b/src/test/java/tools/jackson/core/util/TextBufferTest.java
similarity index 99%
rename from src/test/java/tools/jackson/core/util/TestTextBuffer.java
rename to src/test/java/tools/jackson/core/util/TextBufferTest.java
index 0a8aa55981..c97d5105d7 100644
--- a/src/test/java/tools/jackson/core/util/TestTextBuffer.java
+++ b/src/test/java/tools/jackson/core/util/TextBufferTest.java
@@ -6,7 +6,7 @@
 
 import static org.junit.jupiter.api.Assertions.*;
 
-class TestTextBuffer
+class TextBufferTest
     extends tools.jackson.core.JUnit5TestBase
 {
     /**