1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/NumberFormat/prototype/formatToParts/percent-en-US.js b/js/src/tests/test262/intl402/NumberFormat/prototype/formatToParts/percent-en-US.js
new file mode 100644
index 0000000000..02b1cb5c42
--- /dev/null
+++ b/js/src/tests/test262/intl402/NumberFormat/prototype/formatToParts/percent-en-US.js
@@ -0,0 +1,38 @@
+// Copyright 2019 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.numberformat.prototype.formattoparts
+description: Checks handling of the percent style and unit.
+locale: [en-US]
+features: [Intl.NumberFormat-unified]
+---*/
+
+function verifyFormatParts(actual, expected, message) {
+  assert.sameValue(Array.isArray(expected), true, `${message}: expected is Array`);
+  assert.sameValue(Array.isArray(actual), true, `${message}: actual is Array`);
+  assert.sameValue(actual.length, expected.length, `${message}: length`);
+
+  for (let i = 0; i < actual.length; ++i) {
+    assert.sameValue(actual[i].type, expected[i].type, `${message}: parts[${i}].type`);
+    assert.sameValue(actual[i].value, expected[i].value, `${message}: parts[${i}].value`);
+  }
+}
+
+const nfStyle = new Intl.NumberFormat("en-US", { style: "percent" });
+verifyFormatParts(nfStyle.formatToParts(-123), [
+  {"type":"minusSign","value":"-"},
+  {"type":"integer","value":"12"},
+  {"type":"group","value":","},
+  {"type":"integer","value":"300"},
+  {"type":"percentSign","value":"%"},
+], "style");
+
+const nfUnit = new Intl.NumberFormat("en-US", { style: "unit", unit: "percent" });
+verifyFormatParts(nfUnit.formatToParts(-123), [
+  {"type":"minusSign","value":"-"},
+  {"type":"integer","value":"123"},
+  {"type":"unit","value":"%"},
+], "unit");
+
+reportCompare(0, 0);