diff --git a/src/test/java/org/apache/commons/io/FileUtils_Test.java b/src/test/java/org/apache/commons/io/FileUtils_Test.java
new file mode 100644
index 00000000000..c14d71dc74e
--- /dev/null
+++ b/src/test/java/org/apache/commons/io/FileUtils_Test.java
@@ -0,0 +1,122 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.io;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.File;
+import java.io.IOException;
+import java.math.BigInteger;
+
+import org.junit.jupiter.api.Test;
+
+
+
+public class FileUtils_Test {
+    //test with null input 
+    @Test
+    void testDeleteQuietlyWithNull(){
+        File file =null;
+        boolean result = FileUtils.deleteQuietly(file);
+        assertFalse(result); //expecting false since file is null
+
+    } 
+    //Test with a non-existent file
+    @Test
+    void testDeleteQuietlyWithNonExistentFiles(){
+        File file = new File("nonExistentFile.txt");
+        boolean result = FileUtils.deleteQuietly(file);
+        assertFalse(result); //expecting false since file is null
+
+    } 
+   
+    //Test with an empty directory (boundary value)
+    @Test
+    void testDeleteQuietlyWithEmptyDirectory() throws IOException{
+        File dir= new File("EmptyDir");
+        
+        dir.mkdir();// creates an emtpy dir
+        boolean result = FileUtils.deleteQuietly(dir);
+        assertTrue(result); //expecting true since dir is empty
+
+    } 
+   
+    //Test with a non-empty directory
+    @Test
+    void testDeleteQuietlyWithNonEmptyDirectory() throws IOException{
+        File dir= new File("nonEmptyDir");
+        
+        dir.mkdir();// creates a non emtpy dir
+        new File(dir,"file1.txt").createNewFile();
+        boolean result = FileUtils.deleteQuietly(dir);
+        assertTrue(result); //expecting true since dir is empty
+
+    } 
+    // Test written to check byteCountToDisplaySize() using boundary value analysis
+
+    //just before 1 kB
+    @Test
+    public void testByteCountToDisplaySizeBelow1KB(){
+        assertEquals("1023 bytes",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1023)));
+    }
+
+    //Exactly at 1 kB
+    @Test
+    public void testByteCountToDisplaySizeExactlyAt1KB(){
+        assertEquals("1 KB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1024)));
+    }
+
+    //Just after 1 kB
+    @Test
+    public void testByteCountToDisplaySizeJustAfter1KB(){
+        assertEquals("1 KB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1025)));
+    }
+
+    //Just before 1 MB
+    @Test
+    public void testByteCountToDisplaySizeJustBefore1MB(){
+        assertEquals("1023 KB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1023L * 1024)));
+    }
+
+    //Exactly at 1 MB
+    @Test
+    public void testByteCountToDisplaySizeExactlyAt1MB(){
+        assertEquals("1 MB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1024L * 1024)));
+    }
+    //Just before at 1 GB
+    @Test
+    public void testByteCountToDisplaySizeJustBeforeAt1GB(){
+        assertEquals("1023 MB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1023L * 1024 * 1024)));
+    }
+    //Exactly at 1 GB
+    @Test
+    public void testByteCountToDisplaySizeExactlyAt1GB(){
+        assertEquals("1 GB",
+        FileUtils.byteCountToDisplaySize(BigInteger.valueOf(1024L * 1024 * 1024)));
+    }
+
+   
+    
+}
diff --git a/src/test/java/org/apache/commons/io/FilenameUtils_Test.java b/src/test/java/org/apache/commons/io/FilenameUtils_Test.java
new file mode 100644
index 00000000000..b852060f239
--- /dev/null
+++ b/src/test/java/org/apache/commons/io/FilenameUtils_Test.java
@@ -0,0 +1,113 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.io;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class FilenameUtils_Test {
+   // Test Cases for getBaseName()
+
+     String fileName ;
+     // run before each test
+    @BeforeEach
+    void setUp(){
+     fileName = "";
+    }
+    
+    //test to check an empty file name
+    @Test
+    void testEmptyFileName(){
+        fileName = "";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("", baseName , "Base name should be empty for a empty input");
+    }
+
+    //Test to check single character file
+
+    @Test
+    void testSingleCharacterFileName(){
+        fileName = "p";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("p", baseName, "Base name should be the same for a single character file name");
+
+    }
+
+    //Test to check file name with extension: typical case
+    @Test
+    void testFileNameWithExtension(){
+        fileName = "document.text";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("document", baseName, " Base name should be 'document' when file name has an extension.");
+    }
+    //Test with no extension 
+    @Test
+    void testFileNameWithNoExtension(){
+        fileName = "document";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("document", baseName, " Base name should be the same as'document' when file name has no extension.");
+    }
+    // Test with special Character
+    @Test
+    void testFileNameWithSpecialCharacters(){
+        fileName = "doc@file#name.txt";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("doc@file#name", baseName, " Base name should correctly handle special characters");
+    }
+    // Test with numbers in filename 
+    @Test
+    void testFileNameWithNumbers(){
+        fileName = "doc1234.txt";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("doc1234", baseName, " Base name should correctly handle numbers");
+    }
+    // Test with multiple dots
+    @Test
+    void testFileNameWithMultipleDots(){
+        fileName = "document.excel.dot.txt";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("document.excel.dot", baseName, " Base name should remove only one extension");
+    }
+    //Test involving full path of file
+    @Test
+    void testFileNameWithFullPath(){
+        fileName = "C:\\Users\\14197\\Documents\\MyCode.txt";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("MyCode", baseName, " Base name should give only file name");
+    }
+    //Test with different formats
+    @Test
+    void testFileNameWithDiffFormat(){
+        fileName = "Document.pdf";
+        String baseName = FilenameUtils.getBaseName(fileName);
+        assertEquals("Document", baseName, " Base name work perfectly with different formats.");
+    }
+
+ 
+    // Test for getExtension() starts here
+
+    //Test to get extension of a valid filename
+    @Test 
+    void testGetExtensionForValidFileName(){
+     fileName="file.txt";
+   
+    assertEquals("txt", FilenameUtils.getExtension(fileName));
+    }
+}