function shouldBe(actual, expected) { | |
if (actual !== expected) | |
throw new Error('bad value: ' + actual); | |
} | |
function shouldThrow(func, errorMessage) { | |
var errorThrown = false; | |
var error = null; | |
try { | |
func(); | |
} catch (e) { | |
errorThrown = true; | |
error = e; | |
} | |
if (!errorThrown) | |
throw new Error('not thrown'); | |
if (String(error) !== errorMessage) | |
throw new Error(`bad error: ${String(error)}`); | |
} | |
var func = Set.prototype.add; | |
function target(set) | |
{ | |
return func.call(set, 42); | |
} | |
noInline(target); | |
for (var i = 0; i < 1e6; ++i) { | |
var set = new Set(); | |
shouldBe(target(set), set); | |
shouldBe(set.has(42), true); | |
} | |
shouldThrow(() => { | |
target(new Map()); | |
}, `TypeError: Set operation called on non-Set object`); |