public void UpdateGstPriceTest()
{
var controller = new InvoiceController(messageProcessor);
decimal setGstPrice = 14.5M;
IActionResult actionResult = controller.SetGstPrice(setGstPrice);
var responseUpdate = actionResult as ObjectResult;
actionResult = controller.GetGstPrice();
var responseSelect = actionResult as ObjectResult;
Assert.AreEqual(responseUpdate.Value, true);
Assert.AreEqual(responseSelect.Value, setGstPrice);
}