1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/mergeFields/arguments-not-object.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/mergeFields/arguments-not-object.js
new file mode 100644
index 0000000000..3355b631d9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/mergeFields/arguments-not-object.js
@@ -0,0 +1,43 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.mergefields
+description: Non-object arguments are converted with ToObject and merge their [[OwnPropertyKeys]] onto a new object
+includes: [compareArray.js]
+features: [Temporal]
+---*/
+
+const calendar = new Temporal.Calendar("iso8601");
+
+assert.throws(TypeError, () => calendar.mergeFields(undefined, {}));
+assert.throws(TypeError, () => calendar.mergeFields({}, undefined));
+
+assert.throws(TypeError, () => calendar.mergeFields(null, {}));
+assert.throws(TypeError, () => calendar.mergeFields({}, null));
+
+const boolResult = calendar.mergeFields(true, false);
+assert.compareArray(Object.keys(boolResult), [], "Boolean objects have no own property keys");
+assert.sameValue(Object.getPrototypeOf(boolResult), null, "null-prototype object returned");
+
+const numResult = calendar.mergeFields(3, 4);
+assert.compareArray(Object.keys(numResult), [], "Number objects have no own property keys");
+assert.sameValue(Object.getPrototypeOf(boolResult), null, "null-prototype object returned");
+
+const strResult = calendar.mergeFields("abc", "de");
+assert.compareArray(Object.keys(strResult), ["0", "1", "2"], "String objects have integer indices as own property keys");
+assert.sameValue(strResult["0"], "d");
+assert.sameValue(strResult["1"], "e");
+assert.sameValue(strResult["2"], "c");
+assert.sameValue(Object.getPrototypeOf(boolResult), null, "null-prototype object returned");
+
+const symResult = calendar.mergeFields(Symbol("foo"), Symbol("bar"));
+assert.compareArray(Object.keys(symResult), [], "Symbol objects have no own property keys");
+assert.sameValue(Object.getPrototypeOf(symResult), null, "null-prototype object returned");
+
+const bigintResult = calendar.mergeFields(3n, 4n);
+assert.compareArray(Object.keys(bigintResult), [], "BigInt objects have no own property keys");
+assert.sameValue(Object.getPrototypeOf(bigintResult), null, "null-prototype object returned");
+
+reportCompare(0, 0);