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LibJS: Add the MapIterator built-in and the key/values/entries methods
While this implementation should be complete it is based on HashMap's iterator, which currently follows bucket-order instead of the required insertion order. This can be simply fixed by replacing the underlying HashMap member in Map with an enhanced one that maintains a linked list in insertion order.
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test("length", () => {
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expect(Map.prototype.entries.length).toBe(0);
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});
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test("basic functionality", () => {
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const original = [
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["a", 0],
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["b", 1],
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["c", 2],
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];
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const a = new Map(original);
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const it = a.entries();
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// FIXME: This test should be rewritten once we have proper iteration order
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const first = it.next();
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expect(first.done).toBeFalse();
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expect(a.has(first.value[0])).toBeTrue();
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const second = it.next();
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expect(second.done).toBeFalse();
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expect(a.has(second.value[0])).toBeTrue();
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const third = it.next();
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expect(third.done).toBeFalse();
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expect(a.has(third.value[0])).toBeTrue();
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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});
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test("length", () => {
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expect(Map.prototype.keys.length).toBe(0);
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});
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test("basic functionality", () => {
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const original = [
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["a", 0],
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["b", 1],
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["c", 2],
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];
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const a = new Map(original);
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const it = a.keys();
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// FIXME: This test should be rewritten once we have proper iteration order
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const first = it.next();
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expect(first.done).toBeFalse();
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expect(a.has(first.value)).toBeTrue();
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const second = it.next();
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expect(second.done).toBeFalse();
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expect(a.has(second.value)).toBeTrue();
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const third = it.next();
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expect(third.done).toBeFalse();
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expect(a.has(third.value)).toBeTrue();
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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});
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@ -0,0 +1,26 @@
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test("length", () => {
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expect(Map.prototype.values.length).toBe(0);
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});
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test("basic functionality", () => {
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const original = [
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["a", 0],
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["b", 1],
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["c", 2],
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];
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const a = new Map(original);
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const it = a.values();
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// FIXME: This test should be rewritten once we have proper iteration order
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const first = it.next();
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expect(first.done).toBeFalse();
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expect([0, 1, 2].includes(first.value)).toBeTrue();
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const second = it.next();
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expect(second.done).toBeFalse();
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expect([0, 1, 2].includes(second.value)).toBeTrue();
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const third = it.next();
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expect(third.done).toBeFalse();
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expect([0, 1, 2].includes(third.value)).toBeTrue();
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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});
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