diff --git a/test/built-ins/Temporal/PlainDate/prototype/toJSON/basic.js b/test/built-ins/Temporal/PlainDate/prototype/toJSON/basic.js
new file mode 100644
index 0000000000..2d383ed5c9
--- /dev/null
+++ b/test/built-ins/Temporal/PlainDate/prototype/toJSON/basic.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.plaindate.prototype.tojson
+description: Basic behavior for toJSON
+features: [Temporal]
+---*/
+
+const tests = [
+  [new Temporal.PlainDate(1976, 2, 4), "1976-02-04"],
+  [new Temporal.PlainDate(1976, 11, 18), "1976-11-18"],
+];
+
+const options = new Proxy({}, {
+  get() { throw new Test262Error("should not get properties off argument") }
+});
+for (const [datetime, expected] of tests) {
+  assert.sameValue(datetime.toJSON(), expected, "toJSON without argument");
+  assert.sameValue(datetime.toJSON(options), expected, "toJSON with argument");
+}