1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Locale/prototype/firstDayOfWeek/valid-options.js b/js/src/tests/test262/intl402/Locale/prototype/firstDayOfWeek/valid-options.js
new file mode 100644
index 0000000000..00efebee33
--- /dev/null
+++ b/js/src/tests/test262/intl402/Locale/prototype/firstDayOfWeek/valid-options.js
@@ -0,0 +1,54 @@
+// |reftest| skip -- Intl.Locale-info is not supported
+// Copyright 2023 Google Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.locale
+description: >
+    Checks valid cases for the options argument to the Locale constructor.
+info: |
+    Intl.Locale.prototype.firstDayOfWeek
+    3. Return loc.[[FirstDayOfWeek]].
+
+features: [Intl.Locale,Intl.Locale-info]
+---*/
+
+const validFirstDayOfWeekOptions = [
+  ["mon", 1],
+  ["tue", 2],
+  ["wed", 3],
+  ["thu", 4],
+  ["fri", 5],
+  ["sat", 6],
+  ["sun", 7],
+  ["1", 1],
+  ["2", 2],
+  ["3", 3],
+  ["4", 4],
+  ["5", 5],
+  ["6", 6],
+  ["7", 7],
+  ["0", 7],
+  [1, 1],
+  [2, 2],
+  [3, 3],
+  [4, 4],
+  [5, 5],
+  [6, 6],
+  [7, 7],
+  [0, 7],
+];
+for (const [firstDayOfWeek, expected] of validFirstDayOfWeekOptions) {
+  assert.sameValue(
+    new Intl.Locale('en', { firstDayOfWeek }).firstDayOfWeek,
+    expected,
+    `new Intl.Locale("en", { firstDayOfWeek: ${firstDayOfWeek} }).firstDayOfWeek returns "${expected}"`
+  );
+  assert.sameValue(
+    new Intl.Locale('en-u-fw-WED', { firstDayOfWeek }).firstDayOfWeek,
+    expected,
+    `new Intl.Locale("en-u-fw-WED", { firstDayOfWeek: ${firstDayOfWeek} }).firstDayOfWeek returns "${expected}"`
+  );
+}
+
+reportCompare(0, 0);