Do you know how to say in English ‘hacer un test’? This is a very common doubt that English students have.
Here we will show you the correct ways to say this:
If you are the student
Hacer un test: to take a test; to sit for a test; do a test
We would not say to make a test.
Hacer un examento do an exam.
If you are the teacher
 
The teacher prepares, creates, writes, or designs a test.
A teacher might also say:
“I’ll make an exam (to give to my Advanced English class)”.
“I’ll put together an exam” or “I’ll make up an exam”