text: describe("correct behavior", () => {
      test("basic functionality", () => {
          const plainDateTime = new Temporal.PlainDateTime(2021, 7, 29);
          expect(plainDateTime.day).toBe(29);
      });
  });
  
  test("errors", () => {
      test("this value must be a Temporal.PlainDateTime object", () => {
          expect(() => {
              Reflect.get(Temporal.PlainDateTime.prototype, "day", "foo");
          }).toThrowWithMessage(TypeError, "Not a Temporal.PlainDateTime");
      });
  });
  