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LibJS: Add the Map built-in object
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45
Userland/Libraries/LibJS/Tests/builtins/Map/Map.js
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45
Userland/Libraries/LibJS/Tests/builtins/Map/Map.js
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test("constructor properties", () => {
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expect(Map).toHaveLength(0);
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expect(Map.name).toBe("Map");
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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 Map(value);
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}).toThrowWithMessage(TypeError, "is not iterable");
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});
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});
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test("invalid iterator entries", () => {
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expect(() => {
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new Map([1, 2, 3]);
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}).toThrowWithMessage(TypeError, "Iterator value 1 is not an object");
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});
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test("called without new", () => {
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expect(() => {
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Map();
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}).toThrowWithMessage(TypeError, "Map 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 Map()).toBe("object");
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});
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test("constructor with single entries array argument", () => {
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var a = new Map([
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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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expect(a instanceof Map).toBeTrue();
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expect(a).toHaveSize(3);
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var seen = [false, false, false];
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a.forEach(v => {
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seen[v] = true;
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});
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expect(seen[0] && seen[1] && seen[2]);
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});
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});
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