Set up test

package.json

@@ -48,7 +48,7 @@
     "test": "npm run test:api && npm run test:common",
     "test:api": "npx dotenv-cli -e .env.example -- nx test api",
     "test:common": "npx dotenv-cli -e .env.example -- nx test common",
-    "test:single": "nx run api:test --test-file object.helper.spec.ts",
+    "test:single": "nx run api:test --test-file portfolio-calculator-btceur-with-base-currency-eur.spec.ts",
     "ts-node": "ts-node",
     "update": "nx migrate latest",
     "watch:server": "nx run api:copy-assets && nx run api:build --watch",