public async Task Handle_WhenUserAndCourseExists_EnrollUserToCourse_ReturnEnrolled()
{
var course = new Course(Guid.NewGuid(), "Mathematics");
var user = new User(Guid.NewGuid(), "*****@*****.**");
user.Enroll(course);
var courseIds = new List <Guid>()
{
course.Id
};
CourseRepository.Setup(cr => cr.GetByCourseIdAsync(course.Id)).Returns(Task.FromResult(course));
UserRepository.Setup(cr => cr.GetByUserIdAsync(user.Id)).Returns(Task.FromResult(user));
var command = new WithdrawUserCommand()
{
CourseIds = courseIds, UserId = user.Id
};
var result = await WithdrawUserCommandHandler.Handle(command, CancellationToken.None);
result.Should().Be(CommandResultStatus.Success);
user.Courses.Count.Should().Be(0);
UserRepository.Verify(u => u.UpdateAsync(user), Times.Once());
}
public async Task Handle_WhenUserDoesNotExists_ReturnErrorThatUserDoesNotExists()
{
var course = new Course(Guid.NewGuid(), "Mathematics");
var courseIds = new List <Guid>()
{
course.Id
};
CourseRepository.Setup(cr => cr.GetByCourseIdAsync(course.Id)).Returns(Task.FromResult(course));
UserRepository.Setup(cr => cr.GetByUserIdAsync(It.IsAny <Guid>())).Returns(Task.FromResult <User>(null));
var command = new WithdrawUserCommand()
{
CourseIds = courseIds, UserId = Guid.NewGuid()
};
var result = await WithdrawUserCommandHandler.Handle(command, CancellationToken.None);
result.Should().Be(CommandResultStatus.NotFound);
}
public async Task Handle_WhenCourseDoesNotExists_DoNotEnrollAndReportEnrolled()
{
var courseIds = new List <Guid>()
{
Guid.NewGuid()
};
var user = new User(Guid.NewGuid(), "*****@*****.**");
user.Enroll(new Course(Guid.NewGuid(), "Math"));
var command = new WithdrawUserCommand()
{
CourseIds = courseIds, UserId = user.Id
};
UserRepository.Setup(cr => cr.GetByUserIdAsync(It.IsAny <Guid>())).Returns(Task.FromResult(user));
CourseRepository.Setup(cr => cr.GetByCourseIdAsync(It.IsAny <Guid>())).Returns(Task.FromResult <Course>(null));
var result = await WithdrawUserCommandHandler.Handle(command, CancellationToken.None);
UserRepository.Verify(u => u.UpdateAsync(user), Times.Once());
result.Should().Be(CommandResultStatus.Success);
user.Courses.Count.Should().Be(1);
}
private static bool Match(WithdrawUserCommand received, WithdrawUserCommand expected)
{
return(received.UserId == expected.UserId &&
received.CourseIds.Intersect(expected.CourseIds).Count() == expected.CourseIds.Count);
}
