100 lines
1.8 KiB
JavaScript
100 lines
1.8 KiB
JavaScript
test("basic functionality", () => {
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class A {
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get x() {
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return this._x;
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}
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set x(value) {
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this._x = value * 2;
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}
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}
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expect(A.x).toBeUndefined();
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expect(A).not.toHaveProperty("_x");
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const a = new A();
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expect(a.x).toBeUndefined();
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expect(a).not.toHaveProperty("_x");
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a.x = 3;
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expect(a.x).toBe(6);
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expect(a).toHaveProperty("_x", 6);
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});
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test("name", () => {
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class A {
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set x(v) {}
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}
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const d = Object.getOwnPropertyDescriptor(A.prototype, "x");
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expect(d.set.name).toBe("set x");
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});
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test("extended name syntax", () => {
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class A {
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set "method with space"(value) {
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this.a = value;
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}
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set 12(value) {
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this.b = value;
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}
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set [`he${"llo"}`](value) {
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this.c = value;
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}
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}
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const a = new A();
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a["method with space"] = 1;
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a[12] = 2;
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a.hello = 3;
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expect(a.a).toBe(1);
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expect(a.b).toBe(2);
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expect(a.c).toBe(3);
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});
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test("inherited setter", () => {
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class Parent {
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get x() {
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return this._x;
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}
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set x(value) {
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this._x = value * 2;
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}
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}
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class Child extends Parent {}
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const c = new Child();
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expect(c.x).toBeUndefined();
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c.x = 10;
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expect(c.x).toBe(20);
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});
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test("inherited static setter overriding", () => {
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class Parent {
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get x() {
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return this._x;
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}
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set x(value) {
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this._x = value * 2;
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}
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}
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class Child extends Parent {
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get x() {
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return this._x;
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}
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set x(value) {
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this._x = value * 3;
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}
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}
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const c = new Child();
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expect(c.x).toBeUndefined();
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c.x = 10;
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expect(c.x).toBe(30);
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});
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