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load("test-common.js");
try {
assert(Object.keys.length === 1);
assert(Object.keys(true).length === 0);
assert(Object.keys(45).length === 0);
assert(Object.keys(-998).length === 0);
assert(Object.keys("abcd").length === 4);
assert(Object.keys([1, 2, 3]).length === 3);
assert(Object.keys({ a: 1, b: 2, c: 3 }).length === 3);
assertThrowsError(() => {
Object.keys(null);
}, {
error: TypeError,
message: "ToObject on null or undefined.",
});
assertThrowsError(() => {
Object.keys(undefined);
}, {
error: TypeError,
message: "ToObject on null or undefined.",
});
let keys = Object.keys({ foo: 1, bar: 2, baz: 3 });
assert(keys[0] === "foo" && keys[1] === "bar" && keys[2] === "baz");
keys = Object.keys(["a", "b", "c"]);
assert(keys[0] === "0" && keys[1] === "1" && keys[2] === "2");
let obj = { foo: 1 };
Object.defineProperty(obj, 'getFoo', {
value: function() { return this.foo; },
});
keys = Object.keys(obj);
assert(keys.length === 1 && keys[0] === 'foo');
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);
}
|
