public async Task TestGetTimezoneByLocationId()
{
serviceMock.Setup(x => x.GetIANATimezoneAsync(It.IsAny <int>())).ReturnsAsync(new TimeZoneResult());
var response = await controller.GetTimezoneByLocationIdAsync(1);
Assert.IsInstanceOfType(response, typeof(OkNegotiatedContentResult <TimeZoneResult>));
serviceMock.Verify(x => x.GetIANATimezoneAsync(It.IsAny <int>()), Times.Once());
}