From 4442fc40e61882090f44b3954daabac54a7b81c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?marcin=20miko=C5=82ajczak?= <git@mkljczk.pl>
Date: Thu, 3 Nov 2022 22:43:20 +0100
Subject: [PATCH] Add test
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>
---
 lib/pleroma/language/language_detector.ex     |  4 +--
 .../language/language_detector_test.ex        | 31 +++++++++++++++++++
 test/pleroma/language/translation_test.ex     |  5 ++-
 test/support/language_detector_mock.ex        | 18 +++++++++++
 4 files changed, 55 insertions(+), 3 deletions(-)
 create mode 100644 test/pleroma/language/language_detector_test.ex
 create mode 100644 test/support/language_detector_mock.ex

diff --git a/lib/pleroma/language/language_detector.ex b/lib/pleroma/language/language_detector.ex
index 3901a8b90b..b19eb45711 100644
--- a/lib/pleroma/language/language_detector.ex
+++ b/lib/pleroma/language/language_detector.ex
@@ -11,7 +11,7 @@ def missing_dependencies do
     if provider do
       provider.missing_dependencies()
     else
-      nil
+      []
     end
   end
 
@@ -28,7 +28,7 @@ def detect(text) do
     end
   end
 
-  defp get_provider() do
+  defp get_provider do
     Pleroma.Config.get([__MODULE__, :provider])
   end
 end
diff --git a/test/pleroma/language/language_detector_test.ex b/test/pleroma/language/language_detector_test.ex
new file mode 100644
index 0000000000..4d9af33bf7
--- /dev/null
+++ b/test/pleroma/language/language_detector_test.ex
@@ -0,0 +1,31 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Language.LanguageDetectorTest do
+  use Pleroma.Web.ConnCase
+
+  alias Pleroma.Language.LanguageDetector
+
+  setup do: clear_config([Pleroma.Language.LanguageDetector, :provider], LanguageDetectorMock)
+
+  test "it detects text language" do
+    detected_language = LanguageDetector.detect("Je viens d'atterrir en Tchéquie.")
+
+    assert detected_language == "fr"
+  end
+
+  test "it returns nil if text is not long enough" do
+    detected_language = LanguageDetector.detect("it returns nil")
+
+    assert detected_language == nil
+  end
+
+  test "it returns nil if no provider specified" do
+    clear_config([Pleroma.Language.LanguageDetector, :provider], nil)
+
+    detected_language = LanguageDetector.detect("this should also return nil")
+
+    assert detected_language == nil
+  end
+end
diff --git a/test/pleroma/language/translation_test.ex b/test/pleroma/language/translation_test.ex
index ecab3d20f7..c518e74918 100644
--- a/test/pleroma/language/translation_test.ex
+++ b/test/pleroma/language/translation_test.ex
@@ -1,8 +1,11 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
 defmodule Pleroma.Language.TranslationTest do
   use Pleroma.Web.ConnCase
 
   alias Pleroma.Language.Translation
-  # use Oban.Testing, repo: Pleroma.Repo
 
   setup do: clear_config([Pleroma.Language.Translation, :provider], TranslationMock)
 
diff --git a/test/support/language_detector_mock.ex b/test/support/language_detector_mock.ex
new file mode 100644
index 0000000000..2a85dcd633
--- /dev/null
+++ b/test/support/language_detector_mock.ex
@@ -0,0 +1,18 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule LanguageDetectorMock do
+  alias Pleroma.Language.LanguageDetector.Provider
+
+  @behaviour Provider
+
+  @impl Provider
+  def missing_dependencies, do: []
+
+  @impl Provider
+  def configured?, do: true
+
+  @impl Provider
+  def detect(text), do: "fr"
+end