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Libraries: Move to Userland/Libraries/

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This commit is contained in:
Andreas Kling 2021-01-12 12:17:30 +01:00
parent dc28c07fa5
commit 13d7c09125
1857 changed files with 266 additions and 274 deletions
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133
Libraries/LibJS/Tests/builtins/Proxy/Proxy.handler-defineProperty.js
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@ -1,133 +0,0 @@
describe("[[DefineProperty]] trap normal behavior", () => {
test("forwarding when not defined in handler", () => {
let p = new Proxy({}, { defineProperty: null });
expect(Object.defineProperty(p, "foo", {})).toBe(p);
p = new Proxy({}, { defineProperty: undefined });
expect(Object.defineProperty(p, "foo", {})).toBe(p);
p = new Proxy({}, {});
expect(Object.defineProperty(p, "foo", {})).toBe(p);
});
test("correct arguments passed to trap", () => {
let o = {};
p = new Proxy(o, {
defineProperty(target, name, descriptor) {
expect(target).toBe(o);
expect(name).toBe("foo");
expect(descriptor.configurable).toBeTrue();
expect(descriptor.enumerable).toBeUndefined();
expect(descriptor.writable).toBeTrue();
expect(descriptor.value).toBe(10);
expect(descriptor.get).toBeUndefined();
expect(descriptor.set).toBeUndefined();
return true;
},
});
Object.defineProperty(p, "foo", { configurable: true, writable: true, value: 10 });
});
test("optionally ignoring the define call", () => {
let o = {};
let p = new Proxy(o, {
defineProperty(target, name, descriptor) {
if (target[name] === undefined) Object.defineProperty(target, name, descriptor);
return true;
},
});
Object.defineProperty(p, "foo", {
value: 10,
enumerable: true,
configurable: false,
writable: true,
});
expect(p).toHaveEnumerableProperty("foo");
expect(p).not.toHaveConfigurableProperty("foo");
expect(p).toHaveWritableProperty("foo");
expect(p).toHaveValueProperty("foo", 10);
expect(p).not.toHaveGetterProperty("foo");
expect(p).not.toHaveSetterProperty("foo");
Object.defineProperty(p, "foo", {
value: 20,
enumerable: true,
configurable: false,
writable: true,
});
expect(p).toHaveEnumerableProperty("foo");
expect(p).not.toHaveConfigurableProperty("foo");
expect(p).toHaveWritableProperty("foo");
expect(p).toHaveValueProperty("foo", 10);
expect(p).not.toHaveGetterProperty("foo");
expect(p).not.toHaveSetterProperty("foo");
});
});
describe("[[DefineProperty]] invariants", () => {
test("trap can't return false", () => {
let p = new Proxy(
{},
{
defineProperty() {
return false;
},
}
);
expect(() => {
Object.defineProperty(p, "foo", {});
}).toThrowWithMessage(TypeError, "Object's [[DefineProperty]] method returned false");
});
test("trap cannot return true for a non-extensible target if the property does not exist", () => {
let o = {};
Object.preventExtensions(o);
let p = new Proxy(o, {
defineProperty() {
return true;
},
});
expect(() => {
Object.defineProperty(p, "foo", {});
}).toThrowWithMessage(
TypeError,
"Proxy handler's defineProperty trap violates invariant: a property cannot be reported as being defined if the property does not exist on the target and the target is non-extensible"
);
});
test("trap cannot return true for a non-configurable property if it doesn't already exist on the target", () => {
let o = {};
Object.defineProperty(o, "foo", { value: 10, configurable: true });
let p = new Proxy(o, {
defineProperty() {
return true;
},
});
expect(() => {
Object.defineProperty(p, "bar", { value: 6, configurable: false });
}).toThrowWithMessage(
TypeError,
"Proxy handler's defineProperty trap violates invariant: a property cannot be defined as non-configurable if it does not already exist on the target object"
);
});
test("trap cannot return true for a non-configurable property if it already exists as a configurable property", () => {
let o = {};
Object.defineProperty(o, "foo", { value: 10, configurable: true });
let p = new Proxy(o, {
defineProperty() {
return true;
},
});
expect(() => {
Object.defineProperty(p, "foo", { value: 6, configurable: false });
}).toThrowWithMessage(
TypeError,
"Proxy handler's defineProperty trap violates invariant: a property cannot be defined as non-configurable if it already exists on the target object as a configurable property"
);
});
});