Fix minitest assert_nil warning (#1070)

* Fix minitest assert_nil warning

* Remove empty line

* Fix my stupidity

test/models/account/holding/syncer_test.rb

@@ -103,8 +103,8 @@ def assert_holdings(expected_holdings)
 
         assert actual_holding, "expected #{ticker} holding on date: #{date}"
         assert_equal expected_holding[:qty], actual_holding.qty, "expected #{expected_qty} qty for holding #{ticker} on date: #{date}"
-        assert_equal expected_holding[:amount], actual_holding.amount, "expected #{expected_amount} amount for holding #{ticker} on date: #{date}"
-        assert_equal expected_holding[:price], actual_holding.price, "expected #{expected_price} price for holding #{ticker} on date: #{date}"
+        assert_equal expected_holding[:amount].to_d, actual_holding.amount.to_d, "expected #{expected_amount} amount for holding #{ticker} on date: #{date}"
+        assert_equal expected_holding[:price].to_d, actual_holding.price.to_d, "expected #{expected_price} price for holding #{ticker} on date: #{date}"
       end
     end