diff --git a/tests/codeigniter/helpers/file_helper_test.php b/tests/codeigniter/helpers/file_helper_test.php
index 3a6c73a..c318175 100644
--- a/tests/codeigniter/helpers/file_helper_test.php
+++ b/tests/codeigniter/helpers/file_helper_test.php
@@ -31,9 +31,10 @@
 	{
 		$content = 'Jack and Jill went up the mountain to fight a billy goat.';
 
-		$file = vfsStream::newFile('my_file.txt', 0777)->withContent($content)
-											 ->lastModified(time() - 86400)
-											 ->at($this->_test_dir);
+		$file = vfsStream::newFile('my_file.txt', 0777)
+			->withContent($content)
+			->lastModified(time() - 86400)
+			->at($this->_test_dir);
 
 		$this->assertEquals('777', octal_permissions($file->getPermissions()));
 	}
@@ -47,9 +48,10 @@
 	{
 		$content = 'Jack and Jill went up the mountain to fight a billy goat.';
 
-		$file = vfsStream::newFile('my_file.txt', 0777)->withContent($content)
-											 ->lastModified(time() - 86400)
-											 ->at($this->_test_dir);
+		$file = vfsStream::newFile('my_file.txt', 0777)
+			->withContent($content)
+			->lastModified(time() - 86400)
+			->at($this->_test_dir);
 
 		$this->assertEquals('urwxrwxrwx', symbolic_permissions($file->getPermissions()));
 	}
@@ -60,9 +62,10 @@
 	{
 		$content = 'Jack and Jill went up the mountain to fight a billy goat.';
 
-		$file = vfsStream::newFile('my_file.txt', 0777)->withContent($content)
-											 ->lastModified(time() - 86400)
-											 ->at($this->_test_dir);
+		$file = vfsStream::newFile('my_file.txt', 0777)
+			->withContent($content)
+			->lastModified(time() - 86400)
+			->at($this->_test_dir);
 
 		$this->assertEquals('text/plain', get_mime_by_extension(vfsStream::url('my_file.txt')));
 
@@ -103,19 +106,20 @@
 		$content = 'Jack and Jill went up the mountain to fight a billy goat.';
 		$last_modified = time() - 86400;
 
-		$file = vfsStream::newFile('my_file.txt', 0777)->withContent($content)
-											 ->lastModified($last_modified)
-											 ->at($this->_test_dir);
+		$file = vfsStream::newFile('my_file.txt', 0777)
+			->withContent($content)
+			->lastModified($last_modified)
+			->at($this->_test_dir);
 
 		$ret_values = array(
-			'name'			=> 'my_file.txt',
-			'server_path'	=> 'vfs://my_file.txt',
-			'size'			=> 57,
-			'date'			=> $last_modified,
-			'readable'		=> TRUE,
-			'writable'		=> TRUE,
-			'executable'	=> TRUE,
-			'fileperms'		=> 33279
+			'name'        => 'my_file.txt',
+			'server_path' => 'vfs://my_file.txt',
+			'size'        => 57,
+			'date'        => $last_modified,
+			'readable'    => TRUE,
+			'writable'    => TRUE,
+			'executable'  => TRUE,
+			'fileperms'   => 33279
 		);
 
 		$info = get_file_info(vfsStream::url('my_file.txt'), $vals);
@@ -128,24 +132,16 @@
 
 	// --------------------------------------------------------------------
 
-	// Skipping for now, as it's not implemented in vfsStreamWrapper
-	// flock(): vfsStreamWrapper::stream_lock is not implemented!
+	 public function test_write_file()
+	 {
+		$content = 'Jack and Jill went up the mountain to fight a billy goat.';
 
-	// public function test_write_file()
-	// {
-	//	if ( ! defined('FOPEN_WRITE_CREATE_DESTRUCTIVE'))
-	//	{
-	//		define('FOPEN_WRITE_CREATE_DESTRUCTIVE', 'wb');
-	//	}
-	//
-	//	$content = 'Jack and Jill went up the mountain to fight a billy goat.';
-	//
-	//	$file = vfsStream::newFile('write.txt', 0777)->withContent('')
-	//								 	 ->lastModified(time() - 86400)
-	//								 	 ->at($this->_test_dir);
-	//
-	//	$this->assertTrue(write_file(vfsStream::url('write.txt'), $content));
-	//
-	// }
+		$file = vfsStream::newFile('write.txt', 0777)
+			->withContent('')
+			->lastModified(time() - 86400)
+			->at($this->_test_dir);
+
+		$this->assertTrue(write_file(vfsStream::url('write.txt'), $content));
+	 }
 
 }
\ No newline at end of file