added test helpers to clear config after tests

test/support/helpers.ex

@@ -7,8 +7,52 @@ defmodule Pleroma.Tests.Helpers do
   Helpers for use in tests.
   """
 
+  defmacro clear_config(config_path) do
+    quote do
+      clear_config(unquote(config_path)) do
+      end
+    end
+  end
+
+  defmacro clear_config(config_path, do: yield) do
+    quote do
+      setup do
+        initial_setting = Pleroma.Config.get(unquote(config_path))
+        unquote(yield)
+        on_exit(fn -> Pleroma.Config.put(unquote(config_path), initial_setting) end)
+        :ok
+      end
+    end
+  end
+
+  defmacro clear_config_all(config_path) do
+    quote do
+      clear_config_all(unquote(config_path)) do
+      end
+    end
+  end
+
+  defmacro clear_config_all(config_path, do: yield) do
+    quote do
+      setup_all do
+        initial_setting = Pleroma.Config.get(unquote(config_path))
+        unquote(yield)
+        on_exit(fn -> Pleroma.Config.put(unquote(config_path), initial_setting) end)
+        :ok
+      end
+    end
+  end
+
   defmacro __using__(_opts) do
     quote do
+      import Pleroma.Tests.Helpers,
+        only: [
+          clear_config: 1,
+          clear_config: 2,
+          clear_config_all: 1,
+          clear_config_all: 2
+        ]
+
       def collect_ids(collection) do
         collection
         |> Enum.map(& &1.id)
@@ -30,6 +74,15 @@ defmodule Pleroma.Tests.Helpers do
         |> Poison.encode!()
         |> Poison.decode!()
       end
+
+      defmacro guards_config(config_path) do
+        quote do
+          initial_setting = Pleroma.Config.get(config_path)
+
+          Pleroma.Config.put(config_path, true)
+          on_exit(fn -> Pleroma.Config.put(config_path, initial_setting) end)
+        end
+      end
     end
   end
 end