Fixed: Remove obsolete style keyword (#790)

* fix: Remove unused import and update first_round method in GoldMSI class

* chore: Remove unused keyword from Consent's first_round method

* test: Add basic unit tests for GoldMSI class

backend/experiment/actions/consent.py

@@ -1,4 +1,3 @@
-from .frontend_style import FrontendStyle
 from .base_action import BaseAction
 
 

backend/experiment/rules/gold_msi.py

@@ -25,12 +25,8 @@ def __init__(self):
         ]
         self.questions = MSI_F3_MUSICAL_TRAINING + demographics
 
-    def first_round(self, experiment):
-        consent = Consent(
-            style=FrontendStyle(
-                EFrontendStyle.BOOLEAN,
-            )
-        )
+    def first_round(self):
+        consent = Consent()
         return [
             consent,
         ]

backend/experiment/tests/test_rules_gold_msi.py

@@ -0,0 +1,16 @@
+from django.test import TestCase
+from experiment.rules.gold_msi import GoldMSI
+
+
+class TestGoldMSI(TestCase):
+    def test_init(self):
+        goldMSI = GoldMSI()
+        assert goldMSI.ID == 'GOLD_MSI'
+
+    def test_first_round(self):
+        goldMSI = GoldMSI()
+        result = goldMSI.first_round()
+
+        assert result[0].__class__.__name__ == 'Consent'
+        assert result[0].ID == 'CONSENT'
+