* fix: no api calls on test mode
* fix: make api call, but return 1.0 incase of invalid currency
* feat: patch request.get
* fix: clear cache after test
* fix: add missing test_exchange_value
* fix: avoid api call in implicit function call during test
* fix: returning 1 while in test causes failure
Returning 1.00 causes failure of exchange rate tests.
* chore: retab
* chore: style