fixup! Add tests for "Intl NumberFormat v3" proposal

test/intl402/NumberFormat/prototype/resolvedOptions/roundingMode.js

@@ -0,0 +1,39 @@
+// 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.resolvedoptions
+description: roundingMode property for the object returned by resolvedOptions()
+features: [Intl.NumberFormat-v3]
+---*/
+
+var options;
+
+options = new Intl.NumberFormat([], {}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfExpand (default)');
+
+options = new Intl.NumberFormat([], {roundingMode: 'ceil'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'ceil');
+
+options = new Intl.NumberFormat([], {roundingMode: 'floor'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'floor');
+
+options = new Intl.NumberFormat([], {roundingMode: 'expand'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'expand');
+
+options = new Intl.NumberFormat([], {roundingMode: 'trunc'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'trunc');
+
+options = new Intl.NumberFormat([], {roundingMode: 'halfCeil'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfCeil');
+
+options = new Intl.NumberFormat([], {roundingMode: 'halfFloor'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfFloor');
+
+options = new Intl.NumberFormat([], {roundingMode: 'halfExpand'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfExpand');
+
+options = new Intl.NumberFormat([], {roundingMode: 'halfTrunc'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfTrunc');
+
+options = new Intl.NumberFormat([], {roundingMode: 'halfEven'}).resolvedOptions();
+assert.sameValue(options.roundingMode, 'halfEven');