public void Test_ExceptionDoesNotStopNotifications_UsingWhenConstraint()
{
//
// Create mocks:
//
var loggerMock = new Moq.Mock <ILogger>();
loggerMock.Setup(x => x.Error(It.IsAny <Exception>()));
var bobMock = new Moq.Mock <IEmployee>();
bobMock.Setup(x => x.IsWorkingOnDate(It.IsAny <DateTime>()))
.Returns(true);
bobMock.Setup(x => x.GetNotificationPreference())
.Returns(LunchNotifier.NotificationType.Email);
var marthaMock = new Moq.Mock <IEmployee>();
marthaMock.Setup(x => x.IsWorkingOnDate(It.IsAny <DateTime>()))
.Returns(true);
marthaMock.Setup(x => x.GetNotificationPreference())
.Returns(LunchNotifier.NotificationType.Email);
DateTime?incomingDate;
marthaMock.Setup(x => x.IsWorkingOnDate(It.IsAny <DateTime>()))
.Returns((Func <DateTime, bool>)(input =>
{
incomingDate = input;
return(input.DayOfWeek != DayOfWeek.Sunday);
}));
var employeeServiceMock = new Moq.Mock <IEmployeeService>();
employeeServiceMock.Setup(x => x.GetEmployeesInNewYorkOffice())
.Returns(new[] { bobMock.Object, marthaMock.Object });
bool isFirstCall = true;
var notificationServiceMock = new Moq.Mock <INotificationService>(MockBehavior.Strict);
notificationServiceMock
.When(() => isFirstCall)
.Setup(x => x.SendEmail(It.IsAny <IEmployee>(), It.IsAny <string>()))
.Callback(() => isFirstCall = false)
.Throws <Exception>();;
notificationServiceMock
.When(() => !isFirstCall)
.Setup(x => x.SendEmail(It.IsAny <IEmployee>(), It.IsAny <string>()));
//
// Create instance of class I'm testing:
//
var classUnderTest = new LunchNotifier(notificationServiceMock.Object, employeeServiceMock.Object, loggerMock.Object);
//
// Run some logic to test:
//
classUnderTest.SendLunchtimeNotifications();
//
// Check the results:
//
notificationServiceMock.Verify(x => x.SendEmail(It.IsAny <IEmployee>(), It.IsAny <string>()), Times.Exactly(2));
loggerMock.Verify(x => x.Error(It.IsAny <Exception>()), Times.Once);
}