Write protection check tests

core/tests/exchanges/test_convert.py

@@ -1,6 +1,13 @@
+from decimal import Decimal as D
+
 from django.test import TestCase
 
-from core.exchanges.convert import sl_price_to_percent, tp_price_to_percent
+from core.exchanges.convert import (
+    sl_percent_to_price,
+    sl_price_to_percent,
+    tp_percent_to_price,
+    tp_price_to_percent,
+)
 
 
 class CommonTestCase(TestCase):
@@ -247,25 +254,39 @@ class CommonTestCase(TestCase):
         Test that the SL price to percent conversion works for long trades
         when the price has changed, with multiple units, and the SL is at a profit.
         """
-        sl_price = 1.2  # +20%
+        sl_price = D(1.2)  # +20%
         current_price = 1.1  # +10%
         current_units = 10
         unrealised_pl = 1  # +10%
+        expected_percent = -20
         percent = sl_price_to_percent(
             sl_price, "long", current_price, current_units, unrealised_pl
         )
-        self.assertEqual(percent, -20)
+        self.assertEqual(percent, expected_percent)
+        self.assertEqual(
+            tp_percent_to_price(
+                expected_percent, "long", current_price, current_units, unrealised_pl
+            ),
+            sl_price,
+        )
 
     def test_sl_price_to_percent_change_short_multi_profit(self):
         """
         Test that the SL price to percent conversion works for short trades
         when the price has changed, with multiple units, and the SL is at a profit.
         """
-        sl_price = 0.8  # -20%
+        sl_price = D(0.8)  # -20%
         current_price = 0.9  # +10%
         current_units = 10
         unrealised_pl = 1  # +10%
+        expected_percent = -20
         percent = sl_price_to_percent(
             sl_price, "short", current_price, current_units, unrealised_pl
         )
-        self.assertEqual(percent, -20)
+        self.assertEqual(percent, expected_percent)
+        self.assertEqual(
+            tp_percent_to_price(
+                expected_percent, "short", current_price, current_units, unrealised_pl
+            ),
+            sl_price,
+        )