38 lines
842 B
JavaScript
38 lines
842 B
JavaScript
load("test-common.js");
|
|
|
|
try {
|
|
["foo", 123, null, undefined].forEach(value => {
|
|
assertThrowsError(
|
|
() => {
|
|
"prop" in value;
|
|
},
|
|
{
|
|
error: TypeError,
|
|
message: "'in' operator must be used on an object",
|
|
}
|
|
);
|
|
});
|
|
|
|
var o = { foo: "bar", bar: undefined };
|
|
assert("" in o === false);
|
|
assert("foo" in o === true);
|
|
assert("bar" in o === true);
|
|
assert("baz" in o === false);
|
|
assert("toString" in o === true);
|
|
|
|
var a = ["hello", "friends"];
|
|
assert(0 in a === true);
|
|
assert(1 in a === true);
|
|
assert(2 in a === false);
|
|
assert("0" in a === true);
|
|
assert("hello" in a === false);
|
|
assert("friends" in a === false);
|
|
assert("length" in a === true);
|
|
|
|
var s = new String("foo");
|
|
assert("length" in s);
|
|
|
|
console.log("PASS");
|
|
} catch (e) {
|
|
console.log("FAIL: " + e);
|
|
}
|