Check `formatRange` on many pairs of invalid arguments

test/intl402/Temporal/Instant/formatrange-fails.js

@@ -0,0 +1,32 @@
+// 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.instant
+description: formatRange fails if given arguments of different types
+features: [Temporal]
+---*/
+
+const us = new Intl.DateTimeFormat('en-US');
+
+const instances = {
+  instant: new Temporal.Instant(0n),
+  plaindate: new Temporal.PlainDate(2000, 5, 2),
+  plaindatetime: new Temporal.PlainDateTime(2000, 5, 2, 12, 34, 56, 987, 654, 321),
+  plainmonthday: new Temporal.PlainMonthDay(5, 2),
+  plaintime: new Temporal.PlainTime(13, 37),
+  plainyearmonth: new Temporal.PlainYearMonth(2019, 6),
+  zoneddatetime: new Temporal.ZonedDateTime(0n, 'America/Kentucky/Louisville')
+};
+
+Object.entries(instances).forEach(([typeName, instance]) => {
+  Object.entries(instances).forEach(([anotherTypeName, anotherInstance]) => {
+    if (typeName !== anotherTypeName) {
+      assert.throws(
+        TypeError,
+        () => { us.formatRange(instance, anotherInstance); },
+        'different types argument is bad (' + typeName + ' and ' + anotherTypeName
+      );
+    }
+  });
+});