Updated tests to use explicitly mentioned roles and to fix type coercion bugs after serialization.
Updated tests to use explicitly mentioned roles and to fix type coercion bugs after serialization.

openprocurement/schematics,mlyundin/schematics,ee08b397/schematics,kstrauser/schematics,kaiix/schematics,promptworks/schematics,ee08b397/schematics,eatfirst/schematics,not-napoleon/schematics,NerdWallet/schematics,not-napoleon/schematics,promptworks/schematics,kstrauser/schematics