The testcases are not visible, by allowing to see the WRONG test cases is a MUST !!!
Many a times questions are brief and given testcases does not provide enough surrounding data, edge cases etc.
Another feature that is a must :
When we run code, Expected output along with the output of code must be mentioned >>> EVEN FOR CUSTOM TEST CASES !!
Hey @anon30643403,
Thank you for your suggestion.
For point 1, we already have a feature (for practice problems) that gives your failed test cases when you get a WA. Currently, this is available for ~1800 problems. You can find the list of such problems here. This feature is available for free on all of these problems till 7th of August.
Point 2 is something that we are not intending to pick up in the near future.