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30 lines
872 B
JavaScript
30 lines
872 B
JavaScript
load("test-common.js")
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try {
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const localSym = Symbol("foo");
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const globalSym = Symbol.for("foo");
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assert(localSym !== globalSym);
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assert(localSym !== Symbol("foo"));
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assert(globalSym !== Symbol("foo"));
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assert(globalSym === Symbol.for("foo"));
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assert(localSym.toString() === "Symbol(foo)");
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assert(globalSym.toString() === "Symbol(foo)");
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assert(Symbol.for(1).description === "1");
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assert(Symbol.for(true).description === "true");
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assert(Symbol.for({}).description === "[object Object]");
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assert(Symbol.for().description === "undefined");
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assert(Symbol.for(null).description === "null");
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assertThrowsError(() => {
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Symbol.for(Symbol());
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}, {
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error: TypeError,
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message: "Cannot convert symbol to string",
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});
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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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