text: describe("correct behavior", () => {
      test("length is 1", () => {
          expect(Temporal.TimeZone.prototype.getOffsetStringFor).toHaveLength(1);
      });
  
      test("basic functionality", () => {
          const values = [
              ["UTC", "+00:00"],
              ["GMT", "+00:00"],
              ["Etc/GMT+12", "-12:00"],
              ["Etc/GMT-12", "+12:00"],
              ["Europe/London", "+00:00"],
              ["Europe/Berlin", "+01:00"],
              ["America/New_York", "-05:00"],
              ["America/Los_Angeles", "-08:00"],
              ["+00:00", "+00:00"],
              ["+01:30", "+01:30"],
          ];
          for (const [arg, expected] of values) {
              const instant = new Temporal.Instant(1600000000000000000n);
              expect(new Temporal.TimeZone(arg).getOffsetStringFor(instant)).toBe(expected);
          }
      });
  });
  
  describe("errors", () => {
      test("this value must be a Temporal.TimeZone object", () => {
          expect(() => {
              Temporal.TimeZone.prototype.getOffsetStringFor.call("foo");
          }).toThrowWithMessage(TypeError, "Not an object of type Temporal.TimeZone");
      });
  });
  