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diff --git a/js/src/tests/non262/Intl/DateTimeFormat/formatRange-matches-format-output.js b/js/src/tests/non262/Intl/DateTimeFormat/formatRange-matches-format-output.js
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index 0000000000..67cebd1843
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+++ b/js/src/tests/non262/Intl/DateTimeFormat/formatRange-matches-format-output.js
@@ -0,0 +1,58 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+// formatRange() returns the same output as format() when the date-time difference between
+// the start and end date is too small.
+
+// Test case when skeleton can't be retrieved from resolved pattern (bug 1298794).
+// - Best-fit pattern for the skeleton "MMMMMdd" is "M月dd日".
+// - Best-fit pattern for the skeleton "Mdd" is "M/dd".
+//
+// So in both cases the skeleton characters in the pattern are "Mdd", which means we can't
+// retrieve the original input skeleton by simply inspecting the resolved pattern.
+//
+// Also see: https://unicode-org.atlassian.net/browse/ICU-13518
+{
+    let dtf = new Intl.DateTimeFormat("zh", {month: "narrow", day: "2-digit", timeZone: "UTC"});
+    assertEq(dtf.formatRange(0, 0), dtf.format(0));
+}
+
+// Test that date-/time-style leads to the same output.
+// ICU bug: https://unicode-org.atlassian.net/browse/ICU-20710
+{
+    let dtf = new Intl.DateTimeFormat("en", {dateStyle: "full", timeStyle: "full"});
+    assertEq(dtf.formatRange(0, 0), dtf.format(0));
+}
+
+// Test that the hourCycle option is correctly processed (test with h24).
+// ICU bug: https://unicode-org.atlassian.net/browse/ICU-20707
+{
+    let dtf = new Intl.DateTimeFormat("en-u-hc-h24", {hour: "2-digit", timeZone:"UTC"});
+    assertEq(dtf.formatRange(0, 0), dtf.format(0));
+}
+{
+  let dtf = new Intl.DateTimeFormat("en", {hourCycle: "h24", hour: "2-digit", timeZone:"UTC"});
+  assertEq(dtf.formatRange(0, 0), dtf.format(0));
+}
+
+// Test that the hourCycle option is correctly processed (test with h11).
+// ICU bug: https://unicode-org.atlassian.net/browse/ICU-20707
+{
+    let dt = 60 * 60 * 1000; // one hour
+    let dtf = new Intl.DateTimeFormat("en-u-hc-h11", {hour: "2-digit", timeZone:"UTC"});
+    assertEq(dtf.formatRange(dt, dt), dtf.format(dt));
+}
+{
+  let dt = 60 * 60 * 1000; // one hour
+  let dtf = new Intl.DateTimeFormat("en", {hourCycle: "h11", hour: "2-digit", timeZone:"UTC"});
+  assertEq(dtf.formatRange(dt, dt), dtf.format(dt));
+}
+
+// Test that non-default calendars work correctly.
+// ICU bug: https://unicode-org.atlassian.net/browse/ICU-20706
+{
+    let dtf = new Intl.DateTimeFormat("en-001-u-ca-hebrew");
+    assertEq(dtf.formatRange(0, 0), dtf.format(0));
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);