public void Enroll(StudentRepository studentRepository, ClassRepository classRepository,
StudentEnrollCommand command)
{
var student = studentRepository.GetById(command.StudentId);
var @class = classRepository.GetById(command.ClassId);
student.TryEnrollIn(@class);
@class.TryEnroll(student);
student.Enroll(@class);
@class.Enroll(student);
}
public async Task EnrollStudent_Test()
{
const string studentId = "Student_1";
const string studentEmail = "*****@*****.**";
const string courseTitle = "Math";
const int courseVersion = 0;
var student = new Student(
id: studentId,
version: 0,
name: "Student 1",
age: 30,
email: studentEmail
);
var enrollment = new CourseEnrollment(
courseId: "Course_Math",
courseVersion,
courseTitle,
capacity: 10,
students: new string[0],
new CourseSummary()
);
A.CallTo(() => _fakeStudents.GetStudentAsync(studentEmail)).Returns(student);
A.CallTo(() => _fakeCourses.GetCourseEnrollmentAsync(courseTitle)).Returns(enrollment);
var setCourseEnrollment = A.CallTo(() => _fakeCourses.SetCourseEnrollmentAsync(courseVersion, enrollment));
setCourseEnrollment.Returns(true);
var sendMessage = A.CallTo(() => _fakeSender.SendMessage(A <StudentEnrollCommandHandler.MassagePayload> ._))
.WhenArgumentsMatch((StudentEnrollCommandHandler.MassagePayload payload) =>
payload.CourseTitle == courseTitle &&
payload.StudentEmail == studentEmail &&
payload.Error == null);
var command = new StudentEnrollCommand {
StudentEmail = studentEmail,
CourseTitle = courseTitle
};
bool success = await _commandHandler.Handle(command, default(CancellationToken));
success.Should().BeTrue();
setCourseEnrollment.MustHaveHappenedOnceExactly();
sendMessage.MustHaveHappenedOnceExactly();
enrollment.Students.Should().BeEquivalentTo(new[] { studentId });
}