ladybird/Libraries/LibJS/Tests/classes/class-methods.js

test("basic functionality", () => {
  class A {
    number() {
      return 2;
    }

    string() {
      return "foo";
    }
  }

  const a = new A();
  expect(a.number()).toBe(2);
  expect(a.string()).toBe("foo");
});

test("length", () => {
  class A {
    method1() {}

    method2(a, b, c, d) {}

    method3(a, b, ...c) {}
  }

  const a = new A();
  expect(a.method1).toHaveLength(0);
  expect(a.method2).toHaveLength(4);
  expect(a.method3).toHaveLength(2);
});

test("extended name syntax", () => {
  class A {
    "method with space"() {
      return 1;
    }

    12() {
      return 2;
    }

    [`he${"llo"}`]() {
      return 3;
    }
  }

  const a = new A();
  expect(a["method with space"]()).toBe(1);
  expect(a[12]()).toBe(2);
  expect(a.hello()).toBe(3);
});