Fix test and assign nil to dependent

app/models/case_log.rb

@@ -230,7 +230,7 @@ private
       condition_key = conditions.first[:key]
       condition_value = conditions.first[:value]
       if public_send("#{condition_key}_changed?") && condition_value == public_send(condition_key) && !public_send("#{dependent}_changed?")
-        self.layear = nil
+        self[dependent] = nil
       end
     end
   end

spec/factories/case_log.rb

@@ -110,7 +110,7 @@ FactoryBot.define do
       net_income_known { "Yes" }
       property_owner_organisation { "Test" }
       property_manager_organisation { "Test" }
-      renewal { 1 }
+      renewal { "No" }
       rent_type { 1 }
       intermediate_rent_product_name { 2 }
       needstype { 1 }

spec/fixtures/exports/case_logs.xml

@@ -97,7 +97,7 @@
     <property_owner_organisation>Test</property_owner_organisation>
     <property_manager_organisation>Test</property_manager_organisation>
     <sale_or_letting/>
-    <renewal>1</renewal>
+    <renewal>No</renewal>
     <rent_type>1</rent_type>
     <intermediate_rent_product_name>2</intermediate_rent_product_name>
     <purchaser_code>798794</purchaser_code>