add basic test for #1777 (/= operator issue)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 42.70%. Comparing base (2980154) to head (a8b8b1a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1779 +/- ## ======================================= Coverage 42.70% 42.70% ======================================= Files 361 361 Lines 97331 97331 Branches 19928 19928 ======================================= Hits 41570 41570 Misses 55761 55761 ```

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[alaingdl]

1: I have a more general test (but not working for negative due to modulo with Int) 2 : more important, I think it is better to name the test following the kind of the main problem we address in the test (I will rename and merge few other tests related to ForEach)

[GillesDuvert]

test_indepth_basic_functions.pro in #1784 not only check this but approx. 6100 other possible cases for all basic operators.

[slayoo]

Thanks @GillesDuvert !