do_op tests expects a very different result from what the subject asks for

[Vinni-Cedraz]

According to the subject, we should expect that the user will input the parameters perfectly and hence we shouldn't treat input errors (other than the wrong number of arguments).

subject:

You can assume the string have no mistakes or extraneous characters. Negative
numbers, in input or output, will have one and only one leading '-'. The
result of the operation fits in an int.

But as you can see here, the tester is expecting a specific output from a case where an undefined behavior should be expected and the output totally ignored.

test trace:

----------------8<-------------[ START TEST 
        💻 TEST
./a.out "9828" ""234" 
        🔎 YOUR OUTPUT:
10062$
        🗝 EXPECTED OUTPUT:
0$
----------------8<------------- END TEST ]

There is an extraneous '"' character in ./a.out "9828" ""234", therefore, this test should simply not exist.