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23 lines
620 B
JavaScript
23 lines
620 B
JavaScript
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load("test-common.js");
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try {
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assert(Object.isExtensible() === false);
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assert(Object.isExtensible(undefined) === false);
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assert(Object.isExtensible(null) === false);
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assert(Object.isExtensible(true) === false);
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assert(Object.isExtensible(6) === false);
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assert(Object.isExtensible("test") === false);
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let s = Symbol();
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assert(Object.isExtensible(s) === false);
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let o = { foo: "foo" };
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assert(Object.isExtensible(o) === true);
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Object.preventExtensions(o);
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assert(Object.isExtensible(o) === false);
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console.log("PASS");
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} catch (e) {
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console.log("FAIL: " + e);
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}
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