78155a6668
Now, exceptions can be thrown with interpreter.throw_exception<T>(ErrorType:TYPE, "format", "args", "here").
62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
load("test-common.js");
|
|
|
|
try {
|
|
assert("foo" in new Proxy({}, { has: null }) === false);
|
|
assert("foo" in new Proxy({}, { has: undefined}) === false);
|
|
assert("foo" in new Proxy({}, {}) === false);
|
|
|
|
let o = {};
|
|
let p = new Proxy(o, {
|
|
has(target, prop) {
|
|
assert(target === o);
|
|
assert(prop === "foo");
|
|
return true;
|
|
}
|
|
});
|
|
|
|
"foo" in p;
|
|
|
|
p = new Proxy(o, {
|
|
has(target, prop) {
|
|
if (target.checkedFoo)
|
|
return true;
|
|
if (prop === "foo")
|
|
target.checkedFoo = true;
|
|
return false;
|
|
}
|
|
});
|
|
|
|
assert("foo" in p === false);
|
|
assert("foo" in p === true);
|
|
|
|
// Invariants
|
|
|
|
o = {};
|
|
Object.defineProperty(o, "foo", { configurable: false });
|
|
Object.defineProperty(o, "bar", { value: 10, configurable: true });
|
|
p = new Proxy(o, {
|
|
has() {
|
|
return false;
|
|
}
|
|
});
|
|
|
|
assertThrowsError(() => {
|
|
"foo" in p;
|
|
}, {
|
|
error: TypeError,
|
|
message: "Proxy handler's has trap violates invariant: a property cannot be reported as non-existent if it exists on the target as a non-configurable property",
|
|
});
|
|
|
|
Object.preventExtensions(o);
|
|
|
|
assertThrowsError(() => {
|
|
"bar" in p;
|
|
}, {
|
|
error: TypeError,
|
|
message: "Proxy handler's has trap violates invariant: a property cannot be reported as non-existent if it exists on the target and the target is non-extensible",
|
|
});
|
|
|
|
console.log("PASS");
|
|
} catch (e) {
|
|
console.log("FAIL: " + e);
|
|
}
|