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diff --git a/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/date-same-returns-single-date.js b/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/date-same-returns-single-date.js
new file mode 100644
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+++ b/js/src/tests/test262/intl402/DateTimeFormat/prototype/formatRangeToParts/date-same-returns-single-date.js
@@ -0,0 +1,78 @@
+// Copyright 2021 Google Inc. All rights reserved.
+// Copyright 2021 Apple Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-partitiondatetimerangepattern
+description: >
+  When startDate is equal to endDate, the output should be an Array of objects with the
+  same value for the `type` and `value` fields as in the Array returned by
+  Intl.DateTimeFormat.prototype.formatToParts.
+info: |
+  Intl.DateTimeFormat.prototype.formatRangeToParts ( startDate , endDate )
+  
+  4. Let x be ? ToNumber(startDate).
+  5. Let y be ? ToNumber(endDate).
+  6. Return ? FormatDateTimeRange(dtf, x, y).
+
+  PartitionDateTimeRangePattern ( dateTimeFormat, x, y )
+
+  13. If dateFieldsPracticallyEqual is true, then
+    a. Let pattern be dateTimeFormat.[[Pattern]].
+    b. Let patternParts be PartitionPattern(pattern).
+    c. Let result be ? FormatDateTimePattern(dateTimeFormat, patternParts, tm1).
+    d. For each r in result do
+      i. Set r.[[Source]] to "shared".
+    e. Return result.
+
+features: [Intl.DateTimeFormat-formatRange]
+locale: [en-US]
+---*/
+
+function* zip(a, b) {
+  assert.sameValue(a.length, b.length);
+  for (let i = 0; i < a.length; ++i) {
+    yield [i, a[i], b[i]];
+  }
+}
+
+function compare(actual, expected) {
+  for (const [i, actualEntry, expectedEntry] of zip(actual, expected)) {
+    assert.sameValue(actualEntry.type, expectedEntry.type, `type for entry ${i}`);
+    assert.sameValue(actualEntry.value, expectedEntry.value, `value for entry ${i}`);
+  }
+}
+
+{
+  const date = new Date(2019, 7, 10,  1, 2, 3, 234);
+
+  let dtf = new Intl.DateTimeFormat("en", { year: "numeric", month: "short", day: "numeric" });
+  compare(dtf.formatRangeToParts(date, date), dtf.formatToParts(date), "same output with date options");
+
+  dtf = new Intl.DateTimeFormat("en", { minute: "numeric", second: "numeric" });
+  compare(dtf.formatRangeToParts(date, date), dtf.formatToParts(date), "same output with time options");
+
+  dtf = new Intl.DateTimeFormat("en", { month: "short", day: "numeric", minute: "numeric" });
+  compare(dtf.formatRangeToParts(date, date), dtf.formatToParts(date), "same output with date-time options");
+
+  dtf = new Intl.DateTimeFormat("en", { dateStyle: "long", timeStyle: "short" });
+  compare(dtf.formatRangeToParts(date, date), dtf.formatToParts(date), "same output with dateStyle/timeStyle");
+}
+{
+  const date1 = new Date(2019, 7, 10,  1, 2, 3, 234);
+  const date2 = new Date(2019, 7, 10,  1, 2, 3, 235);
+
+  let dtf = new Intl.DateTimeFormat("en", { year: "numeric", month: "short", day: "numeric" });
+  compare(dtf.formatRangeToParts(date1, date2), dtf.formatToParts(date1), "same output with date options");
+
+  dtf = new Intl.DateTimeFormat("en", { minute: "numeric", second: "numeric" });
+  compare(dtf.formatRangeToParts(date1, date2), dtf.formatToParts(date1), "same output with time options");
+
+  dtf = new Intl.DateTimeFormat("en", { month: "short", day: "numeric", minute: "numeric" });
+  compare(dtf.formatRangeToParts(date1, date2), dtf.formatToParts(date1), "same output with date-time options");
+
+  dtf = new Intl.DateTimeFormat("en", { dateStyle: "long", timeStyle: "short" });
+  compare(dtf.formatRangeToParts(date1, date2), dtf.formatToParts(date1), "same output with dateStyle/timeStyle");
+}
+
+reportCompare(0, 0);