Fixes integrated tests for the economy controller

[colin99d]

Description

Related to #2612
Fixes #2652

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[jmaslek]

I know this is the design, but isn't symbol designated for what we are loading in, whether a fx pair or a ticker. In this case, currency tells us what the units are, which seems like a useful kwarg @minhhoang1023 ?

[jmaslek]

IF anything, parameters should be symbol