1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Segmenter/constructor/supportedLocalesOf/basic.js b/js/src/tests/test262/intl402/Segmenter/constructor/supportedLocalesOf/basic.js
new file mode 100644
index 0000000000..d2f847e0e1
--- /dev/null
+++ b/js/src/tests/test262/intl402/Segmenter/constructor/supportedLocalesOf/basic.js
@@ -0,0 +1,22 @@
+// |reftest| skip-if(!Intl.Segmenter) -- Intl.Segmenter is not enabled unconditionally
+// Copyright 2018 Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.Segmenter.supportedLocalesOf
+description: Tests that Intl.Segmenter has a supportedLocalesOf property, and it works as expected.
+features: [Intl.Segmenter]
+---*/
+
+assert.sameValue(typeof Intl.Segmenter.supportedLocalesOf, "function",
+                 "supportedLocalesOf should be supported.");
+
+const defaultLocale = new Intl.Segmenter().resolvedOptions().locale;
+const notSupported = "zxx"; // "no linguistic content"
+const requestedLocales = [defaultLocale, notSupported];
+
+const supportedLocales = Intl.Segmenter.supportedLocalesOf(requestedLocales);
+assert.sameValue(supportedLocales.length, 1, "The length of supported locales list is not 1.");
+assert.sameValue(supportedLocales[0], defaultLocale, "The default locale is not returned in the supported list.");
+
+reportCompare(0, 0);