fix ChannelCase

apps/block_scout_web/test/block_scout_web/channels/exchange_rate_channel_test.exs

@@ -20,9 +20,6 @@ defmodule BlockScoutWeb.ExchangeRateChannelTest do
 
     ExchangeRates.init([])
 
-    Supervisor.terminate_child(Explorer.Supervisor, {ConCache, Explorer.Market.MarketHistoryCache.cache_name()})
-    Supervisor.restart_child(Explorer.Supervisor, {ConCache, Explorer.Market.MarketHistoryCache.cache_name()})
-
     token = %Token{
       available_supply: Decimal.new("1000000.0"),
       total_supply: Decimal.new("1000000.0"),

apps/block_scout_web/test/support/channel_case.ex

@@ -31,6 +31,9 @@ defmodule BlockScoutWeb.ChannelCase do
   setup tags do
     :ok = Ecto.Adapters.SQL.Sandbox.checkout(Explorer.Repo)
 
+    Supervisor.terminate_child(Explorer.Supervisor, {ConCache, Explorer.Market.MarketHistoryCache.cache_name()})
+    Supervisor.restart_child(Explorer.Supervisor, {ConCache, Explorer.Market.MarketHistoryCache.cache_name()})
+
     unless tags[:async] do
       Ecto.Adapters.SQL.Sandbox.mode(Explorer.Repo, {:shared, self()})
     end