public function testGetFile()
{
$files = ['key1' => 'value1', 'key2' => 'value2'];
$request = new HttpRequest([], [], [], $files, []);
$this->assertEquals($request->getFile('key1'), $files['key1']);
$this->assertEquals($request->getFile('key1', 'defaultValue'), $files['key1']);
$this->assertEquals($request->getFile('key2'), $files['key2']);
$this->assertEquals($request->getFile('key3', 'defaultValue'), 'defaultValue');
$this->assertNull($request->getFile('key3'));
}
