From 9d398924c649f80bdeba6c83d5e0c16c2de721c8 Mon Sep 17 00:00:00 2001
From: Sam Germain <sam.germain@usask.ca>
Date: Fri, 3 Sep 2021 19:56:13 -0600
Subject: [PATCH] Wrote dummy tests for exchange.get_interest_rate

---
 freqtrade/exchange/exchange.py  |  4 ++--
 tests/exchange/test_exchange.py | 34 ++++++++++++++++++++++++++++++---
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index 264d0400d..8bf6d14d1 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -1521,9 +1521,9 @@ class Exchange:
             self._async_get_trade_history(pair=pair, since=since,
                                           until=until, from_id=from_id))
 
-    def get_interest_rate(self, pair: str, open_rate: float, is_short: bool) -> float:
+    def get_interest_rate(self, pair: str, maker_or_taker: str, is_short: bool) -> float:
         # TODO-lev: implement
-        return 0.0005
+        return (0.0005, 0.0005)
 
     def fill_leverage_brackets(self):
         """
diff --git a/tests/exchange/test_exchange.py b/tests/exchange/test_exchange.py
index 0eb7ceb25..710b70afe 100644
--- a/tests/exchange/test_exchange.py
+++ b/tests/exchange/test_exchange.py
@@ -2947,9 +2947,37 @@ def test_fill_leverage_brackets():
     return
 
 
-def test_get_interest_rate():
-    # TODO-lev
-    return
+# TODO-lev: These tests don't test anything real, they need to be replaced with real values once
+# get_interest_rates is written
+@pytest.mark.parametrize('exchange_name,pair,maker_or_taker,is_short,borrow_rate,interest_rate', [
+    ('binance', "ADA/USDT", "maker", True, 0.0005, 0.0005),
+    ('binance', "ADA/USDT", "maker", False, 0.0005, 0.0005),
+    ('binance', "ADA/USDT", "taker", True, 0.0005, 0.0005),
+    ('binance', "ADA/USDT", "taker", False, 0.0005, 0.0005),
+    # Kraken
+    ('kraken', "ADA/USDT", "maker", True, 0.0005, 0.0005),
+    ('kraken', "ADA/USDT", "maker", False, 0.0005, 0.0005),
+    ('kraken', "ADA/USDT", "taker", True, 0.0005, 0.0005),
+    ('kraken', "ADA/USDT", "taker", False, 0.0005, 0.0005),
+    # FTX
+    ('ftx', "ADA/USDT", "maker", True, 0.0005, 0.0005),
+    ('ftx', "ADA/USDT", "maker", False, 0.0005, 0.0005),
+    ('ftx', "ADA/USDT", "taker", True, 0.0005, 0.0005),
+    ('ftx', "ADA/USDT", "taker", False, 0.0005, 0.0005),
+])
+def test_get_interest_rate(
+    default_conf,
+    mocker,
+    exchange_name,
+    pair,
+    maker_or_taker,
+    is_short,
+    borrow_rate,
+    interest_rate
+):
+    exchange = get_patched_exchange(mocker, default_conf, id=exchange_name)
+    assert exchange.get_interest_rate(
+        pair, maker_or_taker, is_short) == (borrow_rate, interest_rate)
 
 
 @pytest.mark.parametrize("collateral", [