fix(warnings): resolve warnings caused by updating elixir

lib/epochtalk_server_web/controllers/image_reference.ex

@@ -63,8 +63,6 @@ defmodule EpochtalkServerWeb.Controllers.ImageReference do
          # checksum <- Validate.cast(attrs, "checksum", :string, required: true),
          file_type <- Validate.cast(attrs, "file_type", :string, required: true) do
       %{length: length, type: file_type}
-    else
-      _ -> %{error: "Invalid attrs"}
     end
   end
 end

lib/epochtalk_server_web/controllers/mention.ex

@@ -27,8 +27,7 @@ defmodule EpochtalkServerWeb.Controllers.Mention do
              pagination_data: data,
              extended: extended
            }),
-         else:
-           ({:auth, nil} ->
-              ErrorHelpers.render_json_error(conn, 400, "Not logged in, cannot page mentions"))
+         else: ({:auth, nil} ->
+                  ErrorHelpers.render_json_error(conn, 400, "Not logged in, cannot page mentions"))
   end
 end

lib/epochtalk_server_web/controllers/post.ex

@@ -417,9 +417,6 @@ defmodule EpochtalkServerWeb.Controllers.Post do
            Validate.cast(attrs, "body", :string, required: true, max: post_max_length, min: 1),
          parsed_body <- Parse.markdown(body) do
       render(conn, :preview, %{parsed_body: parsed_body})
-    else
-      _ ->
-        ErrorHelpers.render_json_error(conn, 400, "Error, cannot generate preview")
     end
   end
 

lib/epochtalk_server_web/controllers/preference.ex

@@ -14,8 +14,11 @@ defmodule EpochtalkServerWeb.Controllers.Preference do
   def preferences(conn, _attrs) do
     with {:auth, %{} = user} <- {:auth, Guardian.Plug.current_resource(conn)},
          do: render(conn, :preferences, preferences: Preference.by_user_id(user.id)),
-         else:
-           ({:auth, nil} ->
-              ErrorHelpers.render_json_error(conn, 400, "Not logged in, cannot fetch preferences"))
+         else: ({:auth, nil} ->
+                  ErrorHelpers.render_json_error(
+                    conn,
+                    400,
+                    "Not logged in, cannot fetch preferences"
+                  ))
   end
 end

lib/epochtalk_server_web/controllers/thread.ex

@@ -35,8 +35,6 @@ defmodule EpochtalkServerWeb.Controllers.Thread do
          user_priority <- ACL.get_user_priority(conn),
          threads <- Thread.recent(user, user_priority) do
       render(conn, :recent, %{threads: threads})
-    else
-      _ -> ErrorHelpers.render_json_error(conn, 400, "Error, cannot fetch recent threads")
     end
   end
 

lib/epochtalk_server_web/json/thread_json.ex

@@ -240,7 +240,7 @@ defmodule EpochtalkServerWeb.Controllers.ThreadJSON do
     # handle deleted user
     thread =
       if thread.user_deleted,
-        do: thread |> Map.put(:user_id, '') |> Map.put(:username, ''),
+        do: thread |> Map.put(:user_id, "") |> Map.put(:username, ""),
         else: thread
 
     # format user output

test/epochtalk_server_web/controllers/post_test.exs

@@ -42,7 +42,7 @@ defmodule Test.EpochtalkServerWeb.Controllers.Post do
                    fn ->
                      post(conn, Routes.post_path(conn, :preview), %{
                        "body" =>
-                         for(_ <- 1..10_001, into: "", do: <<Enum.random('0123456789abcdef')>>)
+                         for(_ <- 1..10_001, into: "", do: <<Enum.random(~c"0123456789abcdef")>>)
                      })
                    end
     end

test/epochtalk_server_web/controllers/user_test.exs

@@ -56,16 +56,16 @@ defmodule Test.EpochtalkServerWeb.Controllers.User do
     end
   end
 
-  @tag :banned
   describe "unban/1" do
+    @tag :banned
     test "unbans banned user", %{users: %{user: user}} do
       {:ok, unbanned_user_changeset} = Ban.unban(user)
       assert unbanned_user_changeset.ban_info == nil
     end
   end
 
-  @tag :malicious
   describe "handle_malicious_user/2" do
+    @tag :malicious
     test "populates ban_info and malicious_score if user is malicious", %{
       users: %{user: user},
       malicious_user_changeset: malicious_user_changeset