ApplicationTest::testRev PHP Method

    public function testRev()
    {
        config(['koel.cdn.url' => '']);
        $manifestFile = __DIR__ . '/blobs/rev-manifest.json';
        $this->assertEquals(App::rev('foo.css', $manifestFile), 'http://localhost/public/build/foo00.css');
        config(['koel.cdn.url' => 'http://cdn.bar']);
        $this->assertEquals(App::rev('bar.js', $manifestFile), 'http://cdn.bar/public/build/bar00.js');
    }