1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/era/validate-calendar-value.js b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/era/validate-calendar-value.js
new file mode 100644
index 0000000000..13f0bc5e8c
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/era/validate-calendar-value.js
@@ -0,0 +1,54 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2023 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-get-temporal.zoneddatetime.prototype.era
+description: Validate result returned from calendar era() method
+features: [Temporal]
+---*/
+
+const badResults = [
+  [null, TypeError],
+  [false, TypeError],
+  [Infinity, TypeError],
+  [-Infinity, TypeError],
+  [NaN, TypeError],
+  [-7, TypeError],
+  [-0.1, TypeError],
+  [Symbol("foo"), TypeError],
+  [7n, TypeError],
+  [{}, TypeError],
+  [true, TypeError],
+  [7.1, TypeError],
+  [{valueOf() { return "7"; }}, TypeError],
+];
+
+badResults.forEach(([result, error]) => {
+  const calendar = new class extends Temporal.Calendar {
+    era() {
+      return result;
+    }
+  }("iso8601");
+  const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, "UTC", calendar);
+  assert.throws(error, () => instance.era, `${typeof result} ${String(result)} not converted to string`);
+});
+
+const preservedResults = [
+  undefined,
+  "string",
+  "7",
+  "7.5",
+];
+
+preservedResults.forEach(result => {
+  const calendar = new class extends Temporal.Calendar {
+    era() {
+      return result;
+    }
+  }("iso8601");
+  const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, "UTC", calendar);
+  assert.sameValue(instance.era, result, `${typeof result} ${String(result)} preserved`);
+});
+
+reportCompare(0, 0);