1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/NumberFormat/prototype/format/signDisplay-negative-en-US.js b/js/src/tests/test262/intl402/NumberFormat/prototype/format/signDisplay-negative-en-US.js
new file mode 100644
index 0000000000..84cef9d244
--- /dev/null
+++ b/js/src/tests/test262/intl402/NumberFormat/prototype/format/signDisplay-negative-en-US.js
@@ -0,0 +1,22 @@
+// Copyright 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.numberformat.prototype.format
+description: Checks handling of the signDisplay option to the NumberFormat constructor.
+locale: [en-US]
+features: [Intl.NumberFormat-v3]
+---*/
+
+const nf = new Intl.NumberFormat("en-US", {signDisplay: "negative"});
+assert.sameValue(nf.format(-Infinity), "-∞", "-Infinity");
+assert.sameValue(nf.format(-987), "-987", "-987");
+assert.sameValue(nf.format(-0.0001), "0", "-0.0001");
+assert.sameValue(nf.format(-0), "0", "-0");
+assert.sameValue(nf.format(0), "0", "0");
+assert.sameValue(nf.format(0.0001), "0", "0.0001");
+assert.sameValue(nf.format(987), "987", "987");
+assert.sameValue(nf.format(Infinity), "∞", "Infinity");
+assert.sameValue(nf.format(NaN), "NaN", "NaN");
+
+reportCompare(0, 0);