75 lines
1.9 KiB
JavaScript
75 lines
1.9 KiB
JavaScript
description(
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"This tests that for/in statements behave correctly when cached."
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);
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function forIn1() {
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var result = [];
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var o = { x: 1 };
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for (var p in o)
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result.push(p);
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return result;
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}
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forIn1();
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Object.prototype.y = 2;
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shouldBe("forIn1()", "['x', 'y']");
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delete Object.prototype.y;
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function forIn2() {
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var result = [];
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var o = { x: 1, __proto__: null };
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for (var p in o)
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result.push(p);
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return result;
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}
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forIn2();
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shouldBe("forIn2()", "['x']");
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function forIn3(proto) {
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var result = [];
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var o = { x: 1, __proto__: proto };
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for (var p in o)
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result.push(p);
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return result;
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}
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forIn3({ __proto__: { y1: 2 } });
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forIn3({ __proto__: { y1: 2 } });
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shouldBe("forIn3({ __proto__: { y1: 2 } })", "['x', 'y1']");
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forIn3({ y2 : 2, __proto__: null });
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forIn3({ y2 : 2, __proto__: null });
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shouldBe("forIn3({ y2 : 2, __proto__: null })", "['x', 'y2']");
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forIn3({ __proto__: { __proto__: { y3 : 2 } } });
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forIn3({ __proto__: { __proto__: { y3 : 2 } } });
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shouldBe("forIn3({ __proto__: { __proto__: { y3 : 2 } } })", "['x', 'y3']");
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function forIn4(o) {
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var result = [];
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for (var p in o)
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result.push(p);
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return result;
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}
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var objectWithArrayAsProto = {};
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objectWithArrayAsProto.__proto__ = [];
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shouldBe("forIn4(objectWithArrayAsProto)", "[]");
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objectWithArrayAsProto.__proto__[0]=1;
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shouldBe("forIn4(objectWithArrayAsProto)", "['0']");
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function forIn5(o) {
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for (var i in o)
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return [i, o[i]];
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}
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shouldBe("forIn5({get foo() { return 'called getter'} })", "['foo', 'called getter']");
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shouldBe("forIn5({set foo(x) { } })", "['foo', undefined]");
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shouldBe("forIn5({get foo() { return 'called getter'}, set foo(x) { }})", "['foo', 'called getter']");
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function cacheClearing() {
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for(var j=0; j < 10; j++){
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var o = {a:1,b:2,c:3,d:4,e:5}
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try {for (i in o) { delete o.a; o = null; throw "" };}finally{continue}
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}
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}
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cacheClearing()
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