adding tests

nym-api/tests/functional_test/circulating_supply/circulating-supply.test.ts

@@ -1,6 +1,5 @@
 import ConfigHandler from "../../src/config/configHandler";
 import ContractCache from "../../src/endpoints/CirculatingSupply";
-
 let contract: ContractCache;
 let config: ConfigHandler;
 
@@ -13,8 +12,14 @@ describe("Get circulating supply", (): void => {
 
   it("Get circulating supply amounts", async (): Promise<void> => {
     const response = await contract.getCirculatingSupply();
-    
+
+    let initial: number = +(response.initial_supply.amount);
+    let mixmining: number = +(response.mixmining_reserve.amount);
+    let vest: number = +(response.vesting_tokens.amount);
+    let circsupply: number = +(response.circulating_supply.amount);
+
     expect(typeof response.vesting_tokens.amount).toBe('string');
+    expect(initial - mixmining - vest).toStrictEqual(circsupply);
 
     });
   });

nym-api/tests/src/types/CirculatingSupplyTypes.ts

@@ -2,7 +2,7 @@ export type Detailed = {
     initial_supply: InitialSupply;
     mixmining_reserve: MixminingReserve;
     vesting_tokens: VestingTokens;
-    circulating_cupply: CirculatingSupply;
+    circulating_supply: CirculatingSupply;
   };
   
   export type InitialSupply = {