1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// This file was procedurally generated from the following sources:
// - src/spread/obj-with-overrides.case
// - src/spread/default/array.template
/*---
description: Object Spread properties being overriden (Array initializer)
esid: sec-runtime-semantics-arrayaccumulation
features: [Symbol, object-spread]
flags: [generated]
info: |
SpreadElement : ...AssignmentExpression
1. Let spreadRef be the result of evaluating AssignmentExpression.
2. Let spreadObj be ? GetValue(spreadRef).
3. Let iterator be ? GetIterator(spreadObj).
4. Repeat
a. Let next be ? IteratorStep(iterator).
b. If next is false, return nextIndex.
c. Let nextValue be ? IteratorValue(next).
d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
nextValue).
e. Assert: status is true.
f. Let nextIndex be nextIndex + 1.
Pending Runtime Semantics: PropertyDefinitionEvaluation
PropertyDefinition:...AssignmentExpression
1. Let exprValue be the result of evaluating AssignmentExpression.
2. Let fromValue be GetValue(exprValue).
3. ReturnIfAbrupt(fromValue).
4. Let excludedNames be a new empty List.
5. Return CopyDataProperties(object, fromValue, excludedNames).
---*/
let o = {a: 2, b: 3, c: 4, e: undefined, f: null, g: false};
var callCount = 0;
(function(obj) {
assert.sameValue(obj.a, 1);
assert.sameValue(obj.b, 7);
assert.sameValue(obj.c, 4);
assert.sameValue(obj.d, 5);
assert(obj.hasOwnProperty("e"));
assert.sameValue(obj.f, null);
assert.sameValue(obj.g, false);
assert.sameValue(obj.h, -0);
assert.sameValue(obj.i.toString(), "Symbol(foo)");
assert(Object.is(obj.j, o));
assert.sameValue(Object.keys(obj).length, 10);
callCount += 1;
}.apply(null, [{...o, a: 1, b: 7, d: 5, h: -0, i: Symbol("foo"), j: o}]));
assert.sameValue(callCount, 1);
reportCompare(0, 0);
|
