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1 // Array.prototype.reverse does a strict assignment to this.length even if the |
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2 // caller is nonstrict. Bug 886087. |
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3 |
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4 load(libdir + "asserts.js"); |
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5 |
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6 // obj[1] is read-only |
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7 var obj = {0: "zero", length: 2, reverse: [].reverse}; |
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8 Object.defineProperty(obj, "1", {configurable: true, value: "one", writable: false}); |
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9 assertThrowsInstanceOf(() => obj.reverse(), TypeError); |
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10 |
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11 // obj[1] has only a getter |
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12 Object.defineProperty(obj, "1", {configurable: true, get: () => "one"}); |
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13 assertThrowsInstanceOf(() => obj.reverse(), TypeError); |