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1 // Check superficial features of Array.of. |
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2 |
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3 load(libdir + "asserts.js"); |
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4 |
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5 var desc = Object.getOwnPropertyDescriptor(Array, "of"); |
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6 assertEq(desc.configurable, true); |
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7 assertEq(desc.enumerable, false); |
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8 assertEq(desc.writable, true); |
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9 assertEq(Array.of.length, 0); |
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10 assertThrowsInstanceOf(() => new Array.of(), TypeError); // not a constructor |
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11 |
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12 // When the this-value passed in is not a constructor, the result is an array. |
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13 for (let v of [undefined, null, false, "cow"]) |
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14 assertEq(Array.isArray(Array.of.call(v)), true); |