public async Task ConfirmViewMessage_DisplaysTheCorrectViewWhenRetrievingAMessageAndItDoesExist()
{
// Arrange
messageService.Setup(e => e.MessageExists(testKey)).ReturnsAsync(true);
// Act
var result = await controller.ConfirmViewMessage(testKey);
// Assert
var actualResult = result as ViewResult;
Assert.AreEqual("ConfirmViewMessage", actualResult.ViewName);
Assert.AreEqual(true, actualResult.ViewData["MessageExists"]);
messageService.VerifyAll();
}