bugfix: fix nan check to account for values castable to float

vapor-ware / synse-server

An HTTP API for monitoring and controlling physical and virtual devices

GNU General Public License v3.0

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Closed edaniszewski closed 2 years ago

edaniszewski commented 2 years ago

This PR:

fixes a bug where non-floats values which were castable to floats (e.g. "000000") were failing the math.isnan check because the casted value was not being passed through.
adds a set of regression tests