Test extension guessing

Author: jim-parry

system/HTTP/Files/UploadedFile.php

@@ -342,8 +342,8 @@ public function getTempName(): string
 	 *
 	 * Is simply an alias for guessExtension for a safer method
 	 * than simply relying on the provided extension.
-	 * Additionaly it will return clientExtension in case if there are
-	 * other extensions withe the same mime type.
+	 * Additionally it will return clientExtension in case if there are
+	 * other extensions with the same mime type.
 	 */
 	public function getExtension(): string
 	{

tests/_support/HTTP/Files/tmp/fileA.txt

@@ -0,0 +1 @@
+

tests/_support/HTTP/Files/tmp/fileB.txt

@@ -0,0 +1 @@
+

tests/system/HTTP/Files/FileCollectionVFSTest.php

@@ -0,0 +1,68 @@
+<?php
+namespace CodeIgniter\HTTP\Files;
+
+use org\bovigo\vfs\vfsStream;
+use CodeIgniter\HTTP\Exceptions\HTTPException;
+
+class FileCollectionVFSTest extends \CIUnitTestCase
+{
+
+	public function setUp()
+	{
+		parent::setUp();
+
+		$this->root = vfsStream::setup();
+		$this->path = '_support/HTTP/Files';
+		vfsStream::copyFromFileSystem(TESTPATH . $this->path, $this->root);
+		$this->start = $this->root->url() . '/';
+
+		$_FILES = [];
+	}
+
+	public function tearDown()
+	{
+		parent::tearDown();
+		$this->root = null;
+
+		//      // cleanup folder being left behind (why?)
+		//      $leftover = WRITEPATH . 'uploads/vfs:';
+		//      if (is_dir($leftover))
+		//      {
+		//          rrmdir($leftover);
+		//      }
+	}
+
+	//--------------------------------------------------------------------
+
+	public function testExtensionGuessing()
+	{
+		$_FILES = [
+			'userfile1' => [
+				'name'     => 'fileA.txt',
+				'type'     => 'text/plain',
+				'size'     => 124,
+				'tmp_name' => '/fileA.txt',
+				'error'    => 0,
+			],
+			'userfile2' => [
+				'name'     => 'fileB.txt',
+				'type'     => 'text/csv',
+				'size'     => 248,
+				'tmp_name' => '/fileB.txt',
+				'error'    => 0,
+			],
+		];
+
+		$collection = new FileCollection();
+		$files      = $collection->all();
+
+		$file = array_shift($files);
+		$this->assertInstanceOf(UploadedFile::class, $file);
+		$this->assertEquals('txt', $file->getExtension());
+
+		$file = array_pop($files);
+		$this->assertInstanceOf(UploadedFile::class, $file);
+		$this->assertEquals('csv', $file->guessExtension());
+	}
+
+}