Customized sprintf: complete unit test to check it

I am using a custom version of sprintf (written for embedded bare metal systems). I would like to test if the string conversions are reliable, especially the float ones.
Is there and where can I find a complete set of tests for “standard” sprintf where I can replace calls to standard sprintf with my sprintf?

Marco Paland’s printf has a test suite, see printf/test_suite.cpp at master · mpaland/printf · GitHub.

Hope this helps!