1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/dayOfWeek/plain-date.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/dayOfWeek/plain-date.js
new file mode 100644
index 0000000000..4fbf36f474
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/dayOfWeek/plain-date.js
@@ -0,0 +1,22 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-temporal.calendar.prototype.dayofweek
+description: >
+  Temporal.Calendar.prototype.dayOfWeek will take Temporal.PlainDate objects
+  and return the day of week.
+info: |
+  5. Return 𝔽(! ToISODayOfWeek(temporalDate.[[ISOYear]], temporalDate.[[ISOMonth]], temporalDate.[[ISODay]])).
+features: [Temporal]
+---*/
+let cal = new Temporal.Calendar("iso8601");
+
+let d = new Temporal.PlainDate(1970, 1, 1);
+assert.sameValue(4, cal.dayOfWeek(d), '4 must return the same value returned by cal.dayOfWeek(d)');
+d = new Temporal.PlainDate(2021, 2, 15);
+assert.sameValue(1, cal.dayOfWeek(d), '1 must return the same value returned by cal.dayOfWeek(d)');
+d = new Temporal.PlainDate(2021, 8, 15);
+assert.sameValue(7, cal.dayOfWeek(d), '7 must return the same value returned by cal.dayOfWeek(d)');
+
+reportCompare(0, 0);