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29 lines
556 B
JavaScript
29 lines
556 B
JavaScript
function shouldBe(actual, expected)
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{
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if (actual !== expected)
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throw new Error('bad value: ' + actual);
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}
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function test(object)
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{
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return Object.keys(object);
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}
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noInline(test);
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var object = { Cocoa: 42 };
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for (var i = 0; i < 1e6; ++i) {
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var result = test(object);
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shouldBe(result.length, 1);
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shouldBe(result[0], 'Cocoa');
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}
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Reflect.defineProperty(object, 'Cocoa', {
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enumerable: false
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});
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for (var i = 0; i < 1e6; ++i) {
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var result = test(object);
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shouldBe(result.length, 0);
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shouldBe(result[0], undefined);
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}
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