+ assert %{locale: "ru"} = conn.assigns
+ end
+
+ test "fallback to the general language if a variant is not supported" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> Conn.put_req_header(
+ "accept-language",
+ "ru-CA;q=0.9, en;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "ru" == Gettext.get_locale()
+ assert %{locale: "ru"} = conn.assigns
+ end
+
+ test "use supported locale with specifiers from `accept-language`" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> Conn.put_req_header(
+ "accept-language",
+ "zh-Hans;q=0.9, en;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "zh_Hans" == Gettext.get_locale()
+ assert %{locale: "zh_Hans"} = conn.assigns
+ end
+
+ test "it assigns all supported locales" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> Conn.put_req_header(
+ "accept-language",
+ "ru, fr-CH, fr;q=0.9, en;q=0.8, x-unsupported;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "ru" == Gettext.get_locale()
+ assert %{locale: "ru", locales: ["ru", "fr", "en"]} = conn.assigns
+ end
+
+ test "it assigns all supported locales in cookie" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> put_req_cookie(SetLocalePlug.frontend_language_cookie_name(), "zh-Hans,uk,zh-Hant")
+ |> Conn.put_req_header(
+ "accept-language",
+ "ru, fr-CH, fr;q=0.9, en;q=0.8, x-unsupported;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "zh_Hans" == Gettext.get_locale()
+
+ assert %{locale: "zh_Hans", locales: ["zh_Hans", "uk", "zh_Hant", "ru", "fr", "en"]} =
+ conn.assigns
+ end
+
+ test "fallback to some variant of the language if the unqualified language is not supported" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> Conn.put_req_header(
+ "accept-language",
+ "zh;q=0.9, en;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "zh_" <> _ = Gettext.get_locale()
+ assert %{locale: "zh_" <> _} = conn.assigns
+ end
+
+ test "use supported locale from cookie" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> put_req_cookie(SetLocalePlug.frontend_language_cookie_name(), "zh-Hans")
+ |> Conn.put_req_header(
+ "accept-language",
+ "ru, fr-CH, fr;q=0.9, en;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "zh_Hans" == Gettext.get_locale()
+ assert %{locale: "zh_Hans"} = conn.assigns
+ end
+
+ test "fallback to supported locale from `accept-language` if locale in cookie not supported" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> put_req_cookie(SetLocalePlug.frontend_language_cookie_name(), "x-nonexist")
+ |> Conn.put_req_header(
+ "accept-language",
+ "ru, fr-CH, fr;q=0.9, en;q=0.8, *;q=0.5"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "ru" == Gettext.get_locale()
+ assert %{locale: "ru"} = conn.assigns
+ end
+
+ test "fallback to default if nothing is supported" do
+ conn =
+ :get
+ |> conn("/cofe")
+ |> put_req_cookie(SetLocalePlug.frontend_language_cookie_name(), "x-nonexist")
+ |> Conn.put_req_header(
+ "accept-language",
+ "x-nonexist"
+ )
+ |> SetLocalePlug.call([])
+
+ assert "en" == Gettext.get_locale()
+ assert %{locale: "en"} = conn.assigns