Rename test classes from JUnit 3 style *TestCase to JUnit 4 style *Test.

All test classes now follow the naming *Test.

Author: Gary Gregory

src/test/java/org/apache/commons/io/ByteOrderMarkTest.java

@@ -32,7 +32,7 @@
  * Test for {@link ByteOrderMark}.
  *
  */
-public class ByteOrderMarkTestCase  {
+public class ByteOrderMarkTest  {
 
     private static final ByteOrderMark TEST_BOM_1 = new ByteOrderMark("test1", 1);
     private static final ByteOrderMark TEST_BOM_2 = new ByteOrderMark("test2", 1, 2);

src/test/java/org/apache/commons/io/CharsetsTest.java

@@ -30,7 +30,7 @@
  *
  */
 @SuppressWarnings("deprecation") // testing deprecated code
-public class CharsetsTestCase {
+public class CharsetsTest {
 
     @Test
     public void testIso8859_1() {

src/test/java/org/apache/commons/io/DemuxTest.java

@@ -35,7 +35,7 @@
 /**
  * Basic unit tests for the multiplexing streams.
  */
-public class DemuxTestCase {
+public class DemuxTest {
     private static class ReaderThread
             extends Thread {
         private final StringBuffer stringBuffer = new StringBuffer();

src/test/java/org/apache/commons/io/DirectoryWalkerTest.java

@@ -39,7 +39,7 @@
  * @see DirectoryWalker
  *
  */
-public class DirectoryWalkerTestCase {
+public class DirectoryWalkerTest {
 
     /**
      * Test DirectoryWalker implementation that finds files in a directory hierarchy

src/test/java/org/apache/commons/io/FileCleanerTest.java

@@ -22,7 +22,7 @@
  *
  * @see FileCleaner
  */
-public class FileCleanerTestCase extends FileCleaningTrackerTestCase {
+public class FileCleanerTest extends FileCleaningTrackerTest {
     @Override
     protected FileCleaningTracker newInstance() {
         return FileCleaner.getInstance();

src/test/java/org/apache/commons/io/FileCleaningTrackerTest.java

@@ -43,7 +43,7 @@
  *
  * @see FileCleaningTracker
  */
-public class FileCleaningTrackerTestCase {
+public class FileCleaningTrackerTest {
 
     @TempDir
     public File temporaryFolder;

src/test/java/org/apache/commons/io/FileDeleteStrategyTest.java

@@ -34,7 +34,7 @@
  *
  * @see FileDeleteStrategy
  */
-public class FileDeleteStrategyTestCase {
+public class FileDeleteStrategyTest {
 
     @TempDir
     public File temporaryFolder;

src/test/java/org/apache/commons/io/FileSystemTest.java

@@ -24,7 +24,7 @@
 import org.apache.commons.lang3.SystemUtils;
 import org.junit.jupiter.api.Test;
 
-public class FileSystemTestCase {
+public class FileSystemTest {
 
 
     @Test

src/test/java/org/apache/commons/io/FileSystemUtilsTest.java

@@ -38,7 +38,7 @@
  *
  */
 @SuppressWarnings("deprecation") // testing deprecated class
-public class FileSystemUtilsTestCase {
+public class FileSystemUtilsTest {
 
     static class MockFileSystemUtils extends FileSystemUtils {
         private final int exitCode;

src/test/java/org/apache/commons/io/FileUtilsCleanDirectoryTest.java

@@ -38,7 +38,7 @@
  * TODO Redo this test using
  * {@link Files#createSymbolicLink(java.nio.file.Path, java.nio.file.Path, java.nio.file.attribute.FileAttribute...)}.
  */
-public class FileUtilsCleanDirectoryTestCase {
+public class FileUtilsCleanDirectoryTest {
 
     @TempDir
     public File top;