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diff --git a/test/pleroma/docs/translator/compiler_test.exs b/test/pleroma/docs/translator/compiler_test.exs
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Docs.Translator.CompilerTest do
+  use ExUnit.Case, async: true
+
+  alias Pleroma.Docs.Translator.Compiler
+
+  @descriptions [
+    %{
+      key: "1",
+      label: "1",
+      description: "2",
+      children: [
+        %{
+          key: "3",
+          label: "3",
+          description: "4"
+        },
+        %{
+          key: "5",
+          label: "5",
+          description: "6"
+        }
+      ]
+    },
+    %{
+      key: "7",
+      label: "7",
+      description: "8",
+      children: [
+        %{
+          key: "9",
+          description: "9",
+          children: [
+            %{
+              key: "10",
+              description: "10",
+              children: [
+                %{key: "11", description: "11"},
+                %{description: "12"}
+              ]
+            }
+          ]
+        },
+        %{
+          label: "13"
+        }
+      ]
+    },
+    %{
+      group: "14",
+      label: "14"
+    },
+    %{
+      group: "15",
+      key: "15",
+      label: "15"
+    },
+    %{
+      group: {":subgroup", "16"},
+      label: "16"
+    }
+  ]
+
+  describe "extract_strings/1" do
+    test "it extracts all labels and descriptions" do
+      strings = Compiler.extract_strings(@descriptions)
+      assert length(strings) == 16
+
+      assert {["1"], "label", "1"} in strings
+      assert {["1"], "description", "2"} in strings
+      assert {["1", "3"], "label", "3"} in strings
+      assert {["1", "3"], "description", "4"} in strings
+      assert {["1", "5"], "label", "5"} in strings
+      assert {["1", "5"], "description", "6"} in strings
+      assert {["7"], "label", "7"} in strings
+      assert {["7"], "description", "8"} in strings
+      assert {["7", "9"], "description", "9"} in strings
+      assert {["7", "9", "10"], "description", "10"} in strings
+      assert {["7", "9", "10", "11"], "description", "11"} in strings
+      assert {["7", "9", "10", nil], "description", "12"} in strings
+      assert {["7", nil], "label", "13"} in strings
+      assert {["14"], "label", "14"} in strings
+      assert {["15-15"], "label", "15"} in strings
+      assert {["16"], "label", "16"} in strings
+    end
+  end
+end