text: test("length is 2", () => {
      expect(Reflect.getOwnPropertyDescriptor).toHaveLength(2);
  });
  
  describe("errors", () => {
      test("target must be an object", () => {
          [null, undefined, "foo", 123, NaN, Infinity].forEach(value => {
              expect(() => {
                  Reflect.getOwnPropertyDescriptor(value);
              }).toThrowWithMessage(
                  TypeError,
                  "First argument of Reflect.getOwnPropertyDescriptor() must be an object"
              );
          });
      });
  });
  
  describe("normal behavior", () => {
      test("get descriptor of undefined object property", () => {
          expect(Reflect.getOwnPropertyDescriptor({})).toBeUndefined();
          expect(Reflect.getOwnPropertyDescriptor({}, "foo")).toBeUndefined();
      });
  
      test("get descriptor of defined object property", () => {
          var o = { foo: "bar" };
          var d = Reflect.getOwnPropertyDescriptor(o, "foo");
          expect(d.value).toBe("bar");
          expect(d.writable).toBeTrue();
          expect(d.enumerable).toBeTrue();
          expect(d.configurable).toBeTrue();
      });
  
      test("get descriptor of array length property", () => {
          var a = [];
          d = Reflect.getOwnPropertyDescriptor(a, "length");
          expect(d.value).toBe(0);
          expect(d.writable).toBeTrue();
          expect(d.enumerable).toBeFalse();
          expect(d.configurable).toBeFalse();
      });
  });
  