detect language

test/feed_reader/language_test.exs

@@ -0,0 +1,13 @@
+defmodule FeedReader.LanguageTest do
+  use ExUnit.Case, async: true
+
+  test "bounds long language detection input and returns a language" do
+    text = String.duplicate("This is a long English sentence. ", 100_000)
+
+    assert is_atom(FeedReader.Language.detect(text))
+  end
+
+  test "ignores non-text values when building a detection sample" do
+    assert FeedReader.Language.detect([nil, 123]) == :en
+  end
+end