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)}`); | |
} | |
function shouldBe(actual, expected) { | |
if (actual !== expected) | |
throw new Error('bad value: ' + actual); | |
} | |
(function () { | |
function test() { | |
return eval('super'); | |
} | |
shouldThrow(() => test(), "SyntaxError: super is not valid in this context."); | |
}()); | |
(function () { | |
class B { | |
gen() { | |
return 42; | |
} | |
} | |
class A extends B { | |
*gen() { | |
return eval('super.gen()'); | |
} | |
} | |
let a = new A(); | |
shouldBe(a.gen().next().value, 42); | |
}()); | |
(function () { | |
class B { | |
gen() { | |
return 42; | |
} | |
} | |
class A extends B { | |
*gen() { | |
yield super.gen(); | |
} | |
} | |
let a = new A(); | |
shouldBe(a.gen().next().value, 42); | |
}()); | |
(function () { | |
class B { | |
gen() { | |
return 42; | |
} | |
} | |
class A extends B { | |
*gen() { | |
yield super.gen(); | |
} | |
} | |
let a = new A(); | |
shouldThrow(() => { | |
new a.gen(); | |
}, `TypeError: function is not a constructor (evaluating 'new a.gen()')`); | |
}()); |