Strict mode Failing
Expected no error, got TypeError: Cannot convert undefined value to object
non-Strict mode Failing
Expected no error, got TypeError: Cannot convert undefined value to object
Features:
- Symbol.unscopables
Expected no error, got TypeError: Cannot convert undefined value to object
Expected no error, got TypeError: Cannot convert undefined value to object
// Copyright (C) 2015 Mike Pennisi. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype-@@unscopables
description: >
Initial value of `Symbol.unscopables` property
info: |
22.1.3.32 Array.prototype [ @@unscopables ]
1. Let unscopableList be ObjectCreate(null).
2. Perform CreateDataProperty(unscopableList, "copyWithin", true).
3. Perform CreateDataProperty(unscopableList, "entries", true).
4. Perform CreateDataProperty(unscopableList, "fill", true).
5. Perform CreateDataProperty(unscopableList, "find", true).
6. Perform CreateDataProperty(unscopableList, "findIndex", true).
7. Perform CreateDataProperty(unscopableList, "flat", true).
8. Perform CreateDataProperty(unscopableList, "flatMap", true).
9. Perform CreateDataProperty(unscopableList, "includes", true).
10. Perform CreateDataProperty(unscopableList, "keys", true).
11. Perform CreateDataProperty(unscopableList, "values", true).
12. Assert: Each of the above calls returns true.
13. Return unscopableList.
includes: [propertyHelper.js]
features: [Symbol.unscopables]
---*/
var unscopables = Array.prototype[Symbol.unscopables];
assert.sameValue(Object.getPrototypeOf(unscopables), null);
assert.sameValue(unscopables.copyWithin, true, '`copyWithin` property value');
verifyProperty(unscopables, "copyWithin", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.entries, true, '`entries` property value');
verifyProperty(unscopables, "entries", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.fill, true, '`fill` property value');
verifyProperty(unscopables, "fill", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.find, true, '`find` property value');
verifyProperty(unscopables, "find", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.findIndex, true, '`findIndex` property value');
verifyProperty(unscopables, "findIndex", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.flat, true, '`flat` property value');
verifyProperty(unscopables, "flat", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.flatMap, true, '`flatMap` property value');
verifyProperty(unscopables, "flatMap", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.includes, true, '`includes` property value');
verifyProperty(unscopables, "includes", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.keys, true, '`keys` property value');
verifyProperty(unscopables, "keys", {
writable: true,
enumerable: true,
configurable: true
});
assert.sameValue(unscopables.values, true, '`values` property value');
verifyProperty(unscopables, "values", {
writable: true,
enumerable: true,
configurable: true
});