diff --git a/test/intl402/NumberFormat/constructor-locales-arraylike.js b/test/intl402/NumberFormat/constructor-locales-arraylike.js
new file mode 100644
index 0000000000..122e14e47e
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+++ b/test/intl402/NumberFormat/constructor-locales-arraylike.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2018 Ujjwal Sharma. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-initializenumberformat
+description: >
+  Tests that the Intl.NumberFormat constructor accepts Array-like values for the
+  locales argument and treats them well.
+---*/
+
+const actual = Intl.NumberFormat({
+  length: 1,
+  1: 'en-US'
+});
+const expected = Intl.NumberFormat(['en-US']);
+
+assert.sameValue(actual.resolvedOptions(), expected.resolvedOptions());