src/spread/obj-with-overrides.case

// Copyright (C) 2017 Caio Lima. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Object Spread properties being overriden
template: default
esid: pending
info: |
    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).
features: [Symbol, object-spread]
---*/

//- setup
let o = {a: 2, b: 3, c: 4, e: undefined, f: null, g: false};

//- args
{...o, a: 1, b: 7, d: 5, h: -0, i: Symbol("foo"), j: o}
//- params
obj
//- body
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);