1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/order-of-operations.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/order-of-operations.js
new file mode 100644
index 0000000000..f66a3915a5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/order-of-operations.js
@@ -0,0 +1,45 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.yearmonthfromfields
+description: Properties on objects passed to yearMonthFromFields() are accessed in the correct order
+includes: [compareArray.js, temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const expected = [
+  "get fields.month",
+  "get fields.month.valueOf",
+  "call fields.month.valueOf",
+  "get fields.monthCode",
+  "get fields.monthCode.toString",
+  "call fields.monthCode.toString",
+  "get fields.year",
+  "get fields.year.valueOf",
+  "call fields.year.valueOf",
+  "get options.overflow",
+  "get options.overflow.toString",
+  "call options.overflow.toString",
+];
+const actual = [];
+
+const instance = new Temporal.Calendar("iso8601");
+
+const fields = TemporalHelpers.propertyBagObserver(actual, {
+  year: 1.7,
+  month: 1.7,
+  monthCode: "M01",
+}, "fields");
+
+const options = TemporalHelpers.propertyBagObserver(actual, {
+  overflow: "reject",
+}, "options");
+
+const result = instance.yearMonthFromFields(fields, options);
+TemporalHelpers.assertPlainYearMonth(result, 1, 1, "M01", "yearMonth result");
+assert.sameValue(result.getISOFields().calendar, "iso8601", "calendar slot should store a string");
+assert.compareArray(actual, expected, "order of operations");
+
+reportCompare(0, 0);