Q: is there a programme you can use to check whether your Macbook retina pro is working properly

If you think it isn't working properly, please describe the symptoms.

You may be referring to this:

Using Apple Diagnostics - Apple Support

It's of very limited use.

To start Apple Diagnostics:

1. Turn off your computer if it is on by choosing Shut Down from the Apple () menu.
2. Press the power button to turn on your computer.
3. Immediately press and hold the D key until Apple Diagnostics begins.

Straight from Apples official documentation. Why won't it work?
MacBook Pro (Retina, 15-inch, Late 2013) 2.6 GHz Intel Core i7 8 GB 1600 MHz DDR3
OS 10.10.4 (14E46) Yosemite.