PhpSchool\LearnYouPhpTest\Exercise\ConcernedAboutSeparationTest::testGetArgsCreatesFilesAndReturnsRandomExt PHP Method

    public function testGetArgsCreatesFilesAndReturnsRandomExt()
    {
        $e = new ConcernedAboutSeparation($this->filesystem, $this->faker, $this->parser);
        $args = $e->getArgs();
        $path = $args[0];
        $this->assertFileExists($path);
        $files = ["learnyouphp.dat", "learnyouphp.txt", "learnyouphp.sql", "api.html", "README.md", "CHANGELOG.md", "LICENCE.md", "md", "data.json", "data.dat", "words.dat", "w00t.dat", "w00t.txt", "wrrrrongdat", "dat"];
        array_walk($files, function ($file) use($path) {
            $this->assertFileExists(sprintf('%s/%s', $path, $file));
        });
        $extensions = array_unique(array_map(function ($file) {
            return pathinfo($file, PATHINFO_EXTENSION);
        }, $files));
        $this->assertTrue(in_array($args[1], $extensions));
    }