From e6b73236145c199731f3d8be026be8080699e616 Mon Sep 17 00:00:00 2001
From: Ms2ger <Ms2ger@gmail.com>
Date: Mon, 13 Jun 2022 12:34:16 +0200
Subject: [PATCH] Temporal: Extend tests for PlainDate#toPlainYearMonth.

---
 .../prototype/toPlainYearMonth/basic.js       | 15 ++++++++
 .../calendar-invalid-return.js                | 36 +++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/basic.js
 create mode 100644 test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/calendar-invalid-return.js

diff --git a/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/basic.js b/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/basic.js
new file mode 100644
index 0000000000..1a8bb523fb
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/basic.js
@@ -0,0 +1,15 @@
+// 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.toplainyearmonth
+description: Basic toPlainYearMonth tests.
+includes: [temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+const pd = new Temporal.PlainDate(1970, 12, 24, calendar);
+const pym = pd.toPlainYearMonth();
+TemporalHelpers.assertPlainYearMonth(pym, 1970, 12, "M12");
+assert.sameValue(pym.calendar, calendar);
diff --git a/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/calendar-invalid-return.js b/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/calendar-invalid-return.js
new file mode 100644
index 0000000000..d7d5a1e5b8
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/toPlainYearMonth/calendar-invalid-return.js
@@ -0,0 +1,36 @@
+// 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.toplainyearmonth
+description: Throw when the returned value is not a PlainYearMonth.
+features: [Temporal]
+---*/
+
+class CustomCalendar extends Temporal.Calendar {
+  constructor(value) {
+    super("iso8601");
+    this.value = value;
+  }
+  yearMonthFromFields() {
+    return this.value;
+  }
+}
+
+const tests = [
+  [undefined],
+  [null, "null"],
+  [true],
+  ["2000-05"],
+  [Symbol()],
+  [200005],
+  [200005n],
+  [{}, "plain object"],
+  [() => {}, "lambda"],
+  [Temporal.PlainYearMonth, "Temporal.PlainYearMonth"],
+  [Temporal.PlainYearMonth.prototype, "Temporal.PlainYearMonth.prototype"],
+];
+for (const [test, description = typeof test] of tests) {
+  const plainDate = new Temporal.PlainDate(2000, 5, 2, new CustomCalendar(test));
+  assert.throws(TypeError, () => plainDate.toPlainYearMonth(), `Expected error with ${description}`);
+}