Add variant tests

lib/cldr/backend/date_time.ex

@@ -197,7 +197,7 @@ defmodule Cldr.DateAndTime.Backend do
           `Cldr.Date.available_formats/3`. See [here](README.md#date-time-and-datetime-localization-formats)
           for more information about specifying formats.
 
-        * `:locale:` any locale returned by `Cldr.known_locale_names/1`.
+        * `:locale` any locale returned by `Cldr.known_locale_names/1`.
           The default is `Cldr.get_locale/0`.
 
         * `:number_system` a number system into which the formatted date digits
@@ -282,7 +282,7 @@ defmodule Cldr.DateAndTime.Backend do
           `Cldr.Date.available_formats/3`. See [here](README.md#date-time-and-datetime-localization-formats)
           for more information about specifying formats.
 
-        * `:locale:` any locale returned by `Cldr.known_locale_names/1`.
+        * `:locale` any locale returned by `Cldr.known_locale_names/1`.
           The default is `Cldr.get_locale/0`.
 
         * `:number_system` a number system into which the formatted date digits

lib/cldr/date.ex

@@ -68,7 +68,7 @@ defmodule Cldr.Date do
     `Cldr.Date.available_formats/3`. See [here](README.md#date-time-and-datetime-localization-formats)
     for more information about specifying formats.
 
-  * `:locale:` any locale returned by `Cldr.known_locale_names/1`.
+  * `:locale` any locale returned by `Cldr.known_locale_names/1`.
     The default is `Cldr.get_locale/0`.
 
   * `:number_system` a number system into which the formatted date digits
@@ -109,6 +109,9 @@ defmodule Cldr.Date do
       iex> Cldr.Date.to_string(~D[2017-07-10], MyApp.Cldr, format: :short, locale: "fr")
       {:ok, "10/07/2017"}
 
+      iex> Cldr.Date.to_string(~D[2024-03-01], format: :yMd, prefer: :variant, locale: "en-CA")
+      {:ok, "1/3/2024"}
+
       # A partial date with a derived "best match" format
       iex> Cldr.Date.to_string(%{year: 2024, month: 6}, MyApp.Cldr, locale: "fr")
       {:ok, "06/2024"}
@@ -237,6 +240,9 @@ defmodule Cldr.Date do
       iex> Cldr.Date.to_string!(~D[2017-07-10], MyApp.Cldr, format: :short, locale: "fr")
       "10/07/2017"
 
+      iex> Cldr.Date.to_string!(~D[2024-03-01], format: :yMd, prefer: :variant, locale: "en-CA")
+      "1/3/2024"
+
       # A partial date with a derived "best match" format
       iex> Cldr.Date.to_string!(%{year: 2024, month: 6}, MyApp.Cldr, locale: "fr")
       "06/2024"

test/variant_test.exs

@@ -0,0 +1,38 @@
+defmodule Cldr.DateTime.VariantTest do
+  use ExUnit.Case, async: true
+
+  test "Date interval variant" do
+    assert {:ok, "1/1/2024 – 1/2/2024"} =
+      Cldr.Date.Interval.to_string ~D[2024-01-01], ~D[2024-02-01], format: :yMd, prefer: :variant, locale: "en-CA"
+
+    assert {:ok, "1/1/2024–2/1/2024"} =
+      Cldr.Date.Interval.to_string ~D[2024-01-01], ~D[2024-02-01], format: :yMd, prefer: :default, locale: "en-CA"
+
+    assert {:ok, "1/1/2024 – 1/2/2024"} =
+      Cldr.Date.Interval.to_string ~D[2024-01-01], ~D[2024-02-01], format: :yMd, prefer: [:variant], locale: "en-CA"
+
+    assert {:ok, "1/1/2024–2/1/2024"} =
+      Cldr.Date.Interval.to_string ~D[2024-01-01], ~D[2024-02-01], format: :yMd, prefer: [:default], locale: "en-CA"
+
+    assert {:ok, "1/1/2024–2/1/2024"} =
+      Cldr.Date.Interval.to_string ~D[2024-01-01], ~D[2024-02-01], format: :yMd, locale: "en-CA"
+  end
+
+  test "Date variant" do
+    assert {:ok, "1/3/2024"} =
+      Cldr.Date.to_string ~D[2024-03-01], format: :yMd, prefer: :variant, locale: "en-CA"
+
+    assert {:ok, "2024-03-01"} =
+      Cldr.Date.to_string ~D[2024-03-01], format: :yMd, prefer: :default, locale: "en-CA"
+
+    assert {:ok, "1/3/2024"} =
+      Cldr.Date.to_string ~D[2024-03-01], format: :yMd, prefer: [:variant], locale: "en-CA"
+
+    assert {:ok, "2024-03-01"} =
+      Cldr.Date.to_string ~D[2024-03-01], format: :yMd, prefer: [:default], locale: "en-CA"
+
+    assert {:ok, "2024-03-01"} =
+      Cldr.Date.to_string ~D[2024-03-01], format: :yMd, locale: "en-CA"
+  end
+
+end