Merge branch 'refactor/config-get' into 'develop'

Refactor Pleroma.Config.get to return consistent results for nil values

Closes #2001

See merge request pleroma/pleroma!2853
This commit is contained in:
lain 2020-08-05 15:59:30 +00:00
commit 9688e332d0
3 changed files with 88 additions and 13 deletions

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@ -11,12 +11,10 @@ defmodule Pleroma.Config do
def get([key], default), do: get(key, default)
def get([parent_key | keys], default) do
case :pleroma
|> Application.get_env(parent_key)
|> get_in(keys) do
nil -> default
any -> any
def get([_ | _] = path, default) do
case fetch(path) do
{:ok, value} -> value
:error -> default
end
end
@ -34,6 +32,24 @@ defmodule Pleroma.Config do
end
end
def fetch(key) when is_atom(key), do: fetch([key])
def fetch([root_key | keys]) do
Enum.reduce_while(keys, Application.fetch_env(:pleroma, root_key), fn
key, {:ok, config} when is_map(config) or is_list(config) ->
case Access.fetch(config, key) do
:error ->
{:halt, :error}
value ->
{:cont, value}
end
_key, _config ->
{:halt, :error}
end)
end
def put([key], value), do: put(key, value)
def put([parent_key | keys], value) do
@ -50,12 +66,15 @@ defmodule Pleroma.Config do
def delete([key]), do: delete(key)
def delete([parent_key | keys]) do
{_, parent} =
Application.get_env(:pleroma, parent_key)
|> get_and_update_in(keys, fn _ -> :pop end)
def delete([parent_key | keys] = path) do
with {:ok, _} <- fetch(path) do
{_, parent} =
parent_key
|> get()
|> get_and_update_in(keys, fn _ -> :pop end)
Application.put_env(:pleroma, parent_key, parent)
Application.put_env(:pleroma, parent_key, parent)
end
end
def delete(key) do

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@ -28,6 +28,34 @@ defmodule Pleroma.ConfigTest do
assert Pleroma.Config.get([:azerty, :uiop], true) == true
end
describe "nil values" do
setup do
Pleroma.Config.put(:lorem, nil)
Pleroma.Config.put(:ipsum, %{dolor: [sit: nil]})
Pleroma.Config.put(:dolor, sit: %{amet: nil})
on_exit(fn -> Enum.each(~w(lorem ipsum dolor)a, &Pleroma.Config.delete/1) end)
end
test "get/1 with an atom for nil value" do
assert Pleroma.Config.get(:lorem) == nil
end
test "get/2 with an atom for nil value" do
assert Pleroma.Config.get(:lorem, true) == nil
end
test "get/1 with a list of keys for nil value" do
assert Pleroma.Config.get([:ipsum, :dolor, :sit]) == nil
assert Pleroma.Config.get([:dolor, :sit, :amet]) == nil
end
test "get/2 with a list of keys for nil value" do
assert Pleroma.Config.get([:ipsum, :dolor, :sit], true) == nil
assert Pleroma.Config.get([:dolor, :sit, :amet], true) == nil
end
end
test "get/1 when value is false" do
Pleroma.Config.put([:instance, :false_test], false)
Pleroma.Config.put([:instance, :nested], [])
@ -89,5 +117,23 @@ defmodule Pleroma.ConfigTest do
Pleroma.Config.put([:delete_me, :delete_me], hello: "world", world: "Hello")
Pleroma.Config.delete([:delete_me, :delete_me, :world])
assert Pleroma.Config.get([:delete_me, :delete_me]) == [hello: "world"]
assert Pleroma.Config.delete([:this_key_does_not_exist])
assert Pleroma.Config.delete([:non, :existing, :key])
end
test "fetch/1" do
Pleroma.Config.put([:lorem], :ipsum)
Pleroma.Config.put([:ipsum], dolor: :sit)
assert Pleroma.Config.fetch([:lorem]) == {:ok, :ipsum}
assert Pleroma.Config.fetch(:lorem) == {:ok, :ipsum}
assert Pleroma.Config.fetch([:ipsum, :dolor]) == {:ok, :sit}
assert Pleroma.Config.fetch([:lorem, :ipsum]) == :error
assert Pleroma.Config.fetch([:loremipsum]) == :error
assert Pleroma.Config.fetch(:loremipsum) == :error
Pleroma.Config.delete([:lorem])
Pleroma.Config.delete([:ipsum])
end
end

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@ -17,9 +17,19 @@ defmodule Pleroma.Tests.Helpers do
defmacro clear_config(config_path, do: yield) do
quote do
initial_setting = Config.get(unquote(config_path))
initial_setting = Config.fetch(unquote(config_path))
unquote(yield)
on_exit(fn -> Config.put(unquote(config_path), initial_setting) end)
on_exit(fn ->
case initial_setting do
:error ->
Config.delete(unquote(config_path))
{:ok, value} ->
Config.put(unquote(config_path), value)
end
end)
:ok
end
end