$this->assertSession()->responseContains('For security reasons, your upload has been renamed to <em class="placeholder">'.$this->phpfile->filename.'_.txt'.'</em>');
$this->assertSession()->responseContains('For security reasons, your upload has been renamed to <em class="placeholder">'.$this->phpFile->filename.'_.txt'.'</em>');
$this->assertSession()->pageTextContains('File MIME type is text/plain.');