public function seeFileFound($filename, $path = '')
    {
        if ($path === '' && file_exists($filename)) {
            $this->openFile($filename);
            \PHPUnit\Framework\Assert::assertFileExists($filename);
            return;
        }

        $found = $this->findFileInPath($filename, $path);

        if ($found === false) {
            $this->fail("File \"$filename\" not found at \"$path\"");
        }

        $this->openFile($found);
        \PHPUnit\Framework\Assert::assertFileExists($found);
    }