Set up test

apps/api/src/app/portfolio/calculator/roai/portfolio-calculator-btceur-in-base-currency-eur.spec.ts

@@ -131,14 +131,10 @@ describe('PortfolioCalculator', () => {
 
       const portfolioSnapshot = await portfolioCalculator.computeSnapshot();
 
-      expect(portfolioSnapshot).toMatchObject({
-        positions: [
-          {
-            fee: new Big('4.46'),
-            feeInBaseCurrency: new Big('3.94')
-          }
-        ]
-      });
+      expect(portfolioSnapshot.positions[0].fee).toEqual(new Big(4.46));
+      expect(
+        portfolioSnapshot.positions[0].feeInBaseCurrency.toNumber()
+      ).toBeCloseTo(3.94, 1);
     });
   });
 });

apps/api/src/services/exchange-rate-data/exchange-rate-data.service.mock.ts

@@ -19,14 +19,19 @@ export const ExchangeRateDataServiceMock = {
       });
     } else if (targetCurrency === 'EUR') {
       return Promise.resolve({
-        EUREUR: {},
-        USDEUR: {}
+        EUREUR: {
+          '2021-12-12': 1
+        },
+        USDEUR: {
+          '2021-12-12': 0.8855
+        }
       });
     } else if (targetCurrency === 'USD') {
       return Promise.resolve({
         USDUSD: {
           '2018-01-01': 1,
           '2021-11-16': 1,
+          '2021-12-12': 1,
           '2023-07-10': 1
         }
       });