diff --git a/test/built-ins/Temporal/Calendar/from/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/from/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..2559b77724
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/from/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.calendar.from
+description: >
+  A Temporal.Calendar instance passed to from() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Calendar.from(arg);
+Temporal.Calendar.from({ calendar: arg });
diff --git a/test/built-ins/Temporal/Calendar/prototype/dateAdd/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/dateAdd/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..83226348d6
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/dateAdd/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.dateadd
+description: >
+  A Temporal.Calendar instance passed to dateAdd() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dateAdd(arg, new Temporal.Duration());
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dateAdd(arg, new Temporal.Duration());
diff --git a/test/built-ins/Temporal/Calendar/prototype/dateUntil/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/dateUntil/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..645c5583d4
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/dateUntil/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.calendar.prototype.dateuntil
+description: >
+  A Temporal.Calendar instance passed to dateUntil() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dateUntil(arg, arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/day/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/day/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..3712975ec3
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/day/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.day
+description: >
+  A Temporal.Calendar instance passed to day() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.day(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.day(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/dayOfWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/dayOfWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..b9aad23a72
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/dayOfWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.dayofweek
+description: >
+  A Temporal.Calendar instance passed to dayOfWeek() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dayOfWeek(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dayOfWeek(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/dayOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/dayOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..162a3217a7
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/dayOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.dayofyear
+description: >
+  A Temporal.Calendar instance passed to dayOfYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.dayOfYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.dayOfYear(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/daysInMonth/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/daysInMonth/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..c9a95836f3
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/daysInMonth/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.daysinmonth
+description: >
+  A Temporal.Calendar instance passed to daysInMonth() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInMonth(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInMonth(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..571b1e1c11
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.daysinweek
+description: >
+  A Temporal.Calendar instance passed to daysInWeek() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInWeek(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInWeek(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/daysInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/daysInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..0fb3a77a0e
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/daysInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.daysinyear
+description: >
+  A Temporal.Calendar instance passed to daysInYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.daysInYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.daysInYear(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..676eb91e70
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.inleapyear
+description: >
+  A Temporal.Calendar instance passed to inLeapYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.inLeapYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.inLeapYear(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/month/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/month/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..962f839a02
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/month/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.month
+description: >
+  A Temporal.Calendar instance passed to month() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.month(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.month(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/monthCode/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/monthCode/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..f9c56b489e
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/monthCode/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.monthcode
+description: >
+  A Temporal.Calendar instance passed to monthCode() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.monthCode(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.monthCode(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/monthsInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/monthsInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..f3e7407628
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/monthsInYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.monthsinyear
+description: >
+  A Temporal.Calendar instance passed to monthsInYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.monthsInYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.monthsInYear(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/weekOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/weekOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..db74808764
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/weekOfYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.weekofyear
+description: >
+  A Temporal.Calendar instance passed to weekOfYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.weekOfYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.weekOfYear(arg);
diff --git a/test/built-ins/Temporal/Calendar/prototype/year/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Calendar/prototype/year/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..7e6f585cf9
--- /dev/null
+++ b/test/built-ins/Temporal/Calendar/prototype/year/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.year
+description: >
+  A Temporal.Calendar instance passed to year() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.year(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.year(arg);
diff --git a/test/built-ins/Temporal/Instant/prototype/toZonedDateTime/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Instant/prototype/toZonedDateTime/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..856a24f3bc
--- /dev/null
+++ b/test/built-ins/Temporal/Instant/prototype/toZonedDateTime/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.prototype.tozoneddatetime
+description: >
+  A Temporal.Calendar instance passed to toZonedDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Instant(1_000_000_000_000_000_000n);
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.toZonedDateTime({ calendar: arg, timeZone: "UTC" });
+instance.toZonedDateTime({ calendar: { calendar: arg }, timeZone: "UTC" });
diff --git a/test/built-ins/Temporal/Now/plainDate/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Now/plainDate/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..c8e606ecca
--- /dev/null
+++ b/test/built-ins/Temporal/Now/plainDate/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.now.plaindate
+description: >
+  A Temporal.Calendar instance passed to plainDate() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.plainDate(arg);
+Temporal.Now.plainDate({ calendar: arg });
diff --git a/test/built-ins/Temporal/Now/plainDateTime/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Now/plainDateTime/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..3bddf244a1
--- /dev/null
+++ b/test/built-ins/Temporal/Now/plainDateTime/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.now.plaindatetime
+description: >
+  A Temporal.Calendar instance passed to plainDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.plainDateTime(arg);
+Temporal.Now.plainDateTime({ calendar: arg });
diff --git a/test/built-ins/Temporal/Now/zonedDateTime/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/Now/zonedDateTime/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..c247c6bb2e
--- /dev/null
+++ b/test/built-ins/Temporal/Now/zonedDateTime/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.now.zoneddatetime
+description: >
+  A Temporal.Calendar instance passed to zonedDateTime() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+Temporal.Now.zonedDateTime(arg);
+Temporal.Now.zonedDateTime({ calendar: arg });
diff --git a/test/built-ins/Temporal/PlainDate/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..78d74ae71e
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plaindate
+description: >
+  A Temporal.Calendar instance passed to new PlainDate() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainDate(2000, 5, 2, arg);
+new Temporal.PlainDate(2000, 5, 2, { calendar: arg });
diff --git a/test/built-ins/Temporal/PlainDate/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..65dc0d4585
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plaindate.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDate.compare(arg, arg);
diff --git a/test/built-ins/Temporal/PlainDate/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..cb48821b06
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,23 @@
+// 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.plaindate.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDate.from(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainDate.from(arg);
diff --git a/test/built-ins/Temporal/PlainDate/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..863166bbfa
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindate.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);
diff --git a/test/built-ins/Temporal/PlainDate/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..8a2685ebc4
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindate.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.since(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.since(arg);
diff --git a/test/built-ins/Temporal/PlainDate/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..0d33317313
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindate.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.until(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.until(arg);
diff --git a/test/built-ins/Temporal/PlainDate/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDate/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..5169231ac3
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.plaindate.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDate(1976, 11, 18, { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });
diff --git a/test/built-ins/Temporal/PlainDateTime/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..0e7bcf6fc7
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plaindatetime
+description: >
+  A Temporal.Calendar instance passed to new PlainDateTime() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainDateTime(2000, 5, 2, 15, 23, 30, 987, 654, 321, arg);
+new Temporal.PlainDateTime(2000, 5, 2, 15, 23, 30, 987, 654, 321, { calendar: arg });
diff --git a/test/built-ins/Temporal/PlainDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..22437da13a
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plaindatetime.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDateTime.compare(arg, arg);
diff --git a/test/built-ins/Temporal/PlainDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..8ac5e5a621
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,23 @@
+// 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.plaindatetime.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+Temporal.PlainDateTime.from(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainDateTime.from(arg);
diff --git a/test/built-ins/Temporal/PlainDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..b9c52f4d0c
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindatetime.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);
diff --git a/test/built-ins/Temporal/PlainDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..253e512efb
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindatetime.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.since(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.since(arg);
diff --git a/test/built-ins/Temporal/PlainDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..1dfb4e252a
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindatetime.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.until(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.until(arg);
diff --git a/test/built-ins/Temporal/PlainDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..423e131faa
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.plaindatetime.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(1976, 11, 18, 15, 23, 30, 123, 456, 789, { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });
diff --git a/test/built-ins/Temporal/PlainDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..60f5a20979
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaindatetime.prototype.withplaindate
+description: >
+  A Temporal.Calendar instance passed to withPlainDate() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainDateTime(2000, 5, 2, 12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.withPlainDate(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.withPlainDate(arg);
diff --git a/test/built-ins/Temporal/PlainMonthDay/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainMonthDay/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..6f5bba578b
--- /dev/null
+++ b/test/built-ins/Temporal/PlainMonthDay/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plainmonthday
+description: >
+  A Temporal.Calendar instance passed to new PlainMonthDay() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainMonthDay(12, 15, arg, 1972);
+new Temporal.PlainMonthDay(12, 15, { calendar: arg }, 1972);
diff --git a/test/built-ins/Temporal/PlainMonthDay/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainMonthDay/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..a2f287eb9c
--- /dev/null
+++ b/test/built-ins/Temporal/PlainMonthDay/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,23 @@
+// 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.plainmonthday.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { monthCode: "M11", day: 18, calendar };
+Temporal.PlainMonthDay.from(arg);
+
+arg = { monthCode: "M11", day: 18, calendar: { calendar } };
+Temporal.PlainMonthDay.from(arg);
diff --git a/test/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..83074bfcdc
--- /dev/null
+++ b/test/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plainmonthday.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainMonthDay(11, 18);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { monthCode: "M11", day: 18, calendar };
+instance.equals(arg);
+
+arg = { monthCode: "M11", day: 18, calendar: { calendar } };
+instance.equals(arg);
diff --git a/test/built-ins/Temporal/PlainTime/prototype/toPlainDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainTime/prototype/toPlainDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..ccb3efa81c
--- /dev/null
+++ b/test/built-ins/Temporal/PlainTime/prototype/toPlainDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaintime.prototype.toplaindatetime
+description: >
+  A Temporal.Calendar instance passed to toPlainDateTime() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainTime(12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.toPlainDateTime(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.toPlainDateTime(arg);
diff --git a/test/built-ins/Temporal/PlainTime/prototype/toZonedDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainTime/prototype/toZonedDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..8a04d72597
--- /dev/null
+++ b/test/built-ins/Temporal/PlainTime/prototype/toZonedDateTime/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plaintime.prototype.tozoneddatetime
+description: >
+  A Temporal.Calendar instance passed to toZonedDateTime() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainTime(12, 34, 56, 987, 654, 321);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.toZonedDateTime({ plainDate: arg, timeZone: "UTC" });
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.toZonedDateTime({ plainDate: arg, timeZone: "UTC" });
diff --git a/test/built-ins/Temporal/PlainYearMonth/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..87011f26e9
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plainyearmonth
+description: >
+  A Temporal.Calendar instance passed to new PlainYearMonth() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.PlainYearMonth(2000, 5, arg, 1);
+new Temporal.PlainYearMonth(2000, 5, { calendar: arg }, 1);
diff --git a/test/built-ins/Temporal/PlainYearMonth/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..2fd2387b2e
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.plainyearmonth.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const arg = { year: 2019, monthCode: "M06", calendar };
+Temporal.PlainYearMonth.compare(arg, arg);
diff --git a/test/built-ins/Temporal/PlainYearMonth/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..764b31665c
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,23 @@
+// 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.plainyearmonth.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+Temporal.PlainYearMonth.from(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+Temporal.PlainYearMonth.from(arg);
diff --git a/test/built-ins/Temporal/PlainYearMonth/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..e8c4790ca5
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plainyearmonth.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.equals(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.equals(arg);
diff --git a/test/built-ins/Temporal/PlainYearMonth/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..629dd814b7
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plainyearmonth.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.since(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.since(arg);
diff --git a/test/built-ins/Temporal/PlainYearMonth/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/PlainYearMonth/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..b87a98c3f6
--- /dev/null
+++ b/test/built-ins/Temporal/PlainYearMonth/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.plainyearmonth.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainYearMonth(2019, 6);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 2019, monthCode: "M06", calendar };
+instance.until(arg);
+
+arg = { year: 2019, monthCode: "M06", calendar: { calendar } };
+instance.until(arg);
diff --git a/test/built-ins/Temporal/TimeZone/prototype/getInstantFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/TimeZone/prototype/getInstantFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..8df2107ee8
--- /dev/null
+++ b/test/built-ins/Temporal/TimeZone/prototype/getInstantFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.timezone.prototype.getinstantfor
+description: >
+  A Temporal.Calendar instance passed to getInstantFor() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.getInstantFor(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.getInstantFor(arg);
diff --git a/test/built-ins/Temporal/TimeZone/prototype/getPlainDateTimeFor/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/TimeZone/prototype/getPlainDateTimeFor/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..6d6341a29e
--- /dev/null
+++ b/test/built-ins/Temporal/TimeZone/prototype/getPlainDateTimeFor/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.timezone.prototype.getplaindatetimefor
+description: >
+  A Temporal.Calendar instance passed to getPlainDateTimeFor() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.getPlainDateTimeFor(new Temporal.Instant(0n), arg);
+instance.getPlainDateTimeFor(new Temporal.Instant(0n), { calendar: arg });
diff --git a/test/built-ins/Temporal/TimeZone/prototype/getPossibleInstantsFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/TimeZone/prototype/getPossibleInstantsFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..b0f380a15b
--- /dev/null
+++ b/test/built-ins/Temporal/TimeZone/prototype/getPossibleInstantsFor/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.timezone.prototype.getpossibleinstantsfor
+description: >
+  A Temporal.Calendar instance passed to getPossibleInstantsFor() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("UTC");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.getPossibleInstantsFor(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.getPossibleInstantsFor(arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..59cb9786ac
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,20 @@
+// 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.zoneddatetime
+description: >
+  A Temporal.Calendar instance passed to new ZonedDateTime() does not have
+  its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+new Temporal.ZonedDateTime(0n, "UTC", arg);
+new Temporal.ZonedDateTime(0n, "UTC", { calendar: arg });
diff --git a/test/built-ins/Temporal/ZonedDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..46e70fa546
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/compare/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,21 @@
+// 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.zoneddatetime.compare
+description: >
+  A Temporal.Calendar instance passed to compare() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const timeZone = new Temporal.TimeZone("UTC");
+const arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+Temporal.ZonedDateTime.compare(arg, arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..205bdabd99
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/from/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,24 @@
+// 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.zoneddatetime.from
+description: >
+  A Temporal.Calendar instance passed to from() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+const timeZone = new Temporal.TimeZone("UTC");
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+Temporal.ZonedDateTime.from(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+Temporal.ZonedDateTime.from(arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..fe60ee3e21
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.equals
+description: >
+  A Temporal.Calendar instance passed to equals() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.equals(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.equals(arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..f6f47c8293
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/since/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.since
+description: >
+  A Temporal.Calendar instance passed to since() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.since(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.since(arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..092aa00352
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/until/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.until
+description: >
+  A Temporal.Calendar instance passed to until() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(0n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar };
+instance.until(arg);
+
+arg = { year: 1970, monthCode: "M01", day: 1, timeZone, calendar: { calendar } };
+instance.until(arg);
diff --git a/test/built-ins/Temporal/ZonedDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..aaa5083ddf
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/withCalendar/calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,22 @@
+// 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.zoneddatetime.prototype.withcalendar
+description: >
+  A Temporal.Calendar instance passed to withCalendar() does not have its
+  'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, "UTC", { id: "replace-me" });
+
+const arg = new Temporal.Calendar("iso8601");
+Object.defineProperty(arg, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+instance.withCalendar(arg);
+instance.withCalendar({ calendar: arg });
diff --git a/test/built-ins/Temporal/ZonedDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/built-ins/Temporal/ZonedDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..82bae0ce0f
--- /dev/null
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/withPlainDate/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,26 @@
+// 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.zoneddatetime.prototype.withplaindate
+description: >
+  A Temporal.Calendar instance passed to withPlainDate() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("UTC");
+const instance = new Temporal.ZonedDateTime(1_000_000_000_000_000_000n, timeZone);
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.withPlainDate(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.withPlainDate(arg);
diff --git a/test/intl402/Temporal/Calendar/prototype/era/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/intl402/Temporal/Calendar/prototype/era/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..2a05f17642
--- /dev/null
+++ b/test/intl402/Temporal/Calendar/prototype/era/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.era
+description: >
+  A Temporal.Calendar instance passed to era() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.era(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.era(arg);
diff --git a/test/intl402/Temporal/Calendar/prototype/eraYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js b/test/intl402/Temporal/Calendar/prototype/eraYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
new file mode 100644
index 0000000000..39d5e343f2
--- /dev/null
+++ b/test/intl402/Temporal/Calendar/prototype/eraYear/argument-propertybag-calendar-instance-does-not-get-calendar-property.js
@@ -0,0 +1,25 @@
+// 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.calendar.prototype.erayear
+description: >
+  A Temporal.Calendar instance passed to eraYear() in a property bag does
+  not have its 'calendar' property observably checked
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+const calendar = new Temporal.Calendar("iso8601");
+Object.defineProperty(calendar, "calendar", {
+  get() {
+    throw new Test262Error("calendar.calendar should not be accessed");
+  },
+});
+
+let arg = { year: 1976, monthCode: "M11", day: 18, calendar };
+instance.eraYear(arg);
+
+arg = { year: 1976, monthCode: "M11", day: 18, calendar: { calendar } };
+instance.eraYear(arg);