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LibJS: Add all of the WeakMap.prototype methods (delete, get, has, set)
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34
Userland/Libraries/LibJS/Tests/builtins/WeakMap/WeakMap.js
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34
Userland/Libraries/LibJS/Tests/builtins/WeakMap/WeakMap.js
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test("constructor properties", () => {
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expect(WeakMap).toHaveLength(0);
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expect(WeakMap.name).toBe("WeakMap");
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});
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describe("errors", () => {
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test("invalid array iterators", () => {
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[-100, Infinity, NaN, {}, 152n].forEach(value => {
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expect(() => {
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new WeakMap(value);
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}).toThrowWithMessage(TypeError, "is not iterable");
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});
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});
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test("called without new", () => {
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expect(() => {
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WeakMap();
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}).toThrowWithMessage(TypeError, "WeakMap constructor must be called with 'new'");
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});
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});
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describe("normal behavior", () => {
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test("typeof", () => {
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expect(typeof new WeakMap()).toBe("object");
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});
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test("constructor with single array of entries argument", () => {
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var a = new WeakMap([
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[{ a: 1 }, 1],
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[{ a: 2 }, 2],
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[{ a: 3 }, 3],
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]);
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expect(a instanceof WeakMap).toBeTrue();
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});
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});
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test("basic functionality", () => {
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expect(WeakMap.prototype.delete).toHaveLength(1);
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var original = [
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[{ a: 1 }, 1],
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[{ a: 2 }, 2],
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[{ a: 3 }, 3],
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];
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const weakMap = new WeakMap(original);
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expect(weakMap.delete(original[0][0])).toBeTrue();
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expect(weakMap.delete(original[0][0])).toBeFalse();
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expect(weakMap.delete(null)).toBeFalse();
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});
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@ -0,0 +1,12 @@
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test("basic functionality", () => {
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expect(WeakMap.prototype.get).toHaveLength(1);
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var original = [
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[{ a: 1 }, 1],
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[{ a: 2 }, 2],
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[{ a: 3 }, 3],
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];
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const weakMap = new WeakMap(original);
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expect(weakMap.get(original[0][0])).toBe(original[0][1]);
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expect(weakMap.get(null)).toBe(undefined);
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});
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test("length is 1", () => {
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expect(WeakMap.prototype.has).toHaveLength(1);
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});
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test("basic functionality", () => {
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var original = [
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[{ a: 1 }, 1],
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[{ a: 2 }, 2],
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[{ a: 3 }, 3],
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];
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var weakMap = new WeakMap(original);
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expect(new WeakMap().has()).toBeFalse();
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expect(weakMap.has(original[0][0])).toBeTrue();
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expect(weakMap.has({ a: 1 })).toBeFalse();
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});
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test("basic functionality", () => {
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expect(WeakMap.prototype.set).toHaveLength(2);
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const weakMap = new WeakMap([
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[{ a: 1 }, 1],
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[{ a: 2 }, 2],
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[{ a: 3 }, 3],
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]);
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expect(weakMap.set({ a: 4 }, 4)).toBe(weakMap);
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expect(weakMap.set({ a: 1 }, 2)).toBe(weakMap);
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});
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test("invalid values", () => {
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const weakMap = new WeakMap();
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[-100, Infinity, NaN, "hello", 152n].forEach(value => {
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expect(() => {
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weakMap.set(value, value);
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}).toThrowWithMessage(TypeError, "is not an object");
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});
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});
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test("automatic removal of garbage-collected values", () => {
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const weakMap = new WeakMap();
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{
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expect(weakMap.set({ a: 1 }, 1)).toBe(weakMap);
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expect(getWeakMapSize(weakMap)).toBe(1);
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}
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gc();
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expect(getWeakMapSize(weakMap)).toBe(0);
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});
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