Object.prototype.hasOwnProperty: Test coercion order

test/built-ins/Object/prototype/hasOwnProperty/topropertykey_before_toobject.js

@@ -0,0 +1,45 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-object.prototype.hasownproperty
+description: >
+  ToPropertyKey is performed before ToObject.
+info: |
+  Object.prototype.hasOwnProperty ( V )
+
+  1. Let P be ? ToPropertyKey(V).
+  2. Let O be ? ToObject(this value).
+
+  ToPropertyKey ( argument )
+
+  1. Let key be ? ToPrimitive(argument, hint String).
+features: [Symbol.toPrimitive]
+---*/
+
+var coercibleKey1 = {
+  get toString() {
+    this.hint = "string";
+    throw new Test262Error();
+  },
+  get valueOf() {
+    this.hint = "defaultOrNumber";
+    throw new Test262Error();
+  },
+};
+
+assert.throws(Test262Error, function() {
+  Object.prototype.hasOwnProperty.call(null, coercibleKey1);
+});
+assert.sameValue(coercibleKey1.hint, "string");
+
+
+var coercibleKey2 = {};
+coercibleKey2[Symbol.toPrimitive] = function(hint) {
+  this.hint = hint;
+  throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+  Object.prototype.hasOwnProperty.call(undefined, coercibleKey2);
+});
+assert.sameValue(coercibleKey2.hint, "string");