They send an email. Link is listed in the email.when you are ready to give test then opened the link. It is one hour test. You have to submit test during this time while you complete the task or not

I was asked to fill a form, in which I will submit a code assignment, I went through the stress of writing the code. This code took hours to complete after completion I submitted the whole stuff, this was last year. Till today there is no response. Probably it takes them 4 months to review a Laravel code.