Replace custom temporary folder management with JUnit's TemporaryFolder.

This will allow Maven to run tests concurrently.

Author: garydgregory

src/test/java/org/apache/commons/io/input/TailerTest.java

@@ -16,7 +16,25 @@
  */
 package org.apache.commons.io.input;
 
-import java.io.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.BufferedOutputStream;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.RandomAccessFile;
+import java.io.Writer;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -27,23 +45,24 @@
 
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
-import org.apache.commons.io.testtools.FileBasedTestCase;
 import org.apache.commons.io.testtools.TestUtils;
 import org.junit.After;
+import org.junit.Rule;
 import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import org.junit.rules.TemporaryFolder;
 
 /**
  * Tests for {@link Tailer}.
  *
  */
-public class TailerTest extends FileBasedTestCase {
+public class TailerTest {
+
+    @Rule
+    public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+    private File getTestDirectory() {
+        return temporaryFolder.getRoot();
+    }
 
     private Tailer tailer;