diff --git a/tests/webfiori/framework/test/FileTest.php b/tests/webfiori/framework/test/FileTest.php
index 3a6d5c9..39b6dbe 100644
--- a/tests/webfiori/framework/test/FileTest.php
+++ b/tests/webfiori/framework/test/FileTest.php
@@ -136,6 +136,21 @@ public function test08() {
         $this->assertEquals("This is to test if read from same directory is working.\n", $file->getRawData());
         $this->assertEquals('{"id":-1,"mime":"text\/plain","name":"in-dir.txt","directory":"C:\\inetpub\\wwwroot\\dev\\IbrahimSpace\\file\\tests\\webfiori\\framework\\test","sizeInBytes":57,"sizeInKBytes":0.0556640625,"sizeInMBytes":5.4359436035156E-5}', $file.'');
     }
+    /**
+     * @test
+     */
+    public function testAppend00() {
+        $file = new File('text-file-x.txt',ROOT_PATH.DS.'tests'.DS.'files');
+        $this->assertEquals('', $file->getRawData());
+        $file->append('Hello');
+        $this->assertEquals('Hello', $file->getRawData());
+        $file->append(' World!');
+        $file->append([
+            ' More ',
+            'Data'
+        ]);
+        $this->assertEquals('Hello World! More Data', $file->getRawData());
+    }
     /**
      * @test
      */