Source code
Revision control
Copy as Markdown
Other Tools
load(libdir + "asserts.js");
load(libdir + "iteration.js");
assertEq(eval(...[]), undefined);
assertEq(eval(...["1 + 2"]), 3);
let a = 10, b = 1;
assertEq(eval(...["a + b"]), 11);
(function() {
let a = 20;
assertEq(eval(...["a + b"]), 21);
})();
with ({ a: 30 }) {
assertEq(eval(...["a + b"]), 31);
}
let line0 = Error().lineNumber;
try { // line0 + 1
eval(...["("]); // line0 + 2
} catch (e) {
assertEq(e.lineNumber, 1);
}
// other iterable objects
assertEq(eval(...["a + b"][Symbol.iterator]()), 11);
assertEq(eval(...new Set(["a + b"])), 11);
let itr = {};
itr[Symbol.iterator] = function() {
return {
i: 0,
next: function() {
this.i++;
if (this.i == 1)
return { value: "a + b", done: false };
else
return { value: undefined, done: true };
}
};
};
assertEq(eval(...itr), 11);
function* gen() {
yield "a + b";
}
assertEq(eval(...gen()), 11);
let c = ["C"], d = "D";
assertEq(eval(...c=["c[0] + d"]), "c[0] + dD");
// 12.2.4.1.2 Runtime Semantics: ArrayAccumulation
// If Type(spreadObj) is not Object, then throw a TypeError exception.
assertThrowsInstanceOf(() => eval("a + b", ...null), TypeError);
assertThrowsInstanceOf(() => eval("a + b", ...undefined), TypeError);