1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/DurationFormat/prototype/format/branding.js b/js/src/tests/test262/intl402/DurationFormat/prototype/format/branding.js
new file mode 100644
index 0000000000..acaccd554b
--- /dev/null
+++ b/js/src/tests/test262/intl402/DurationFormat/prototype/format/branding.js
@@ -0,0 +1,25 @@
+// |reftest| skip -- Intl.DurationFormat is not supported
+// Copyright 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DurationFormat.prototype.format
+description: Verifies the branding check for the "format" function of the DurationFormat prototype object.
+features: [Intl.DurationFormat]
+---*/
+
+const format = Intl.DurationFormat.prototype.format;
+
+assert.sameValue(typeof format, "function");
+
+assert.throws(TypeError, () => format.call(undefined, { years : 2 }), "undefined");
+assert.throws(TypeError, () => format.call(null, { years : 2 }), "null");
+assert.throws(TypeError, () => format.call(true, { years : 2 }), "true");
+assert.throws(TypeError, () => format.call("", { years : 2 }), "empty string");
+assert.throws(TypeError, () => format.call(Symbol(), { years : 2 }), "symbol");
+assert.throws(TypeError, () => format.call(1, { years : 2 }), "1");
+assert.throws(TypeError, () => format.call({}, { years : 2 }), "plain object");
+assert.throws(TypeError, () => format.call(Intl.DurationFormat, { years : 2 } ), "Intl.DurationFormat");
+assert.throws(TypeError, () => format.call(Intl.DurationFormat.prototype,  { years : 2 }), "Intl.DurationFormat.prototype");
+
+reportCompare(0, 0);