Test refactoring: renaming

src/test/java/com/fasterxml/jackson/core/util/TestDefaultPrettyPrinter.java → src/test/java/com/fasterxml/jackson/core/util/DefaultPrettyPrinterTest.java

@@ -14,7 +14,7 @@
 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();
 

src/test/java/com/fasterxml/jackson/core/util/TestSerializedString.java → src/test/java/com/fasterxml/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 com.fasterxml.jackson.core.JUnit5TestBase
 {
     private static final String QUOTED = "\\\"quo\\\\ted\\\"";

src/test/java/com/fasterxml/jackson/core/util/TestTextBuffer.java → src/test/java/com/fasterxml/jackson/core/util/TextBufferTest.java

@@ -6,7 +6,7 @@
 
 import static org.junit.jupiter.api.Assertions.*;
 
-class TestTextBuffer
+class TextBufferTest
     extends com.fasterxml.jackson.core.JUnit5TestBase
 {
     /**