public async Task AddCourseToStudentAsync_ShouldReturnEnrollment()
{
int studentId = 1;
int courseId = 1;
var mockLogger = new Mock <IBaseLogger <EnrollmentService> >();
var mockRepository = new Mock <IEnrollmentRepository>();
mockRepository.Setup(repo => repo.AddEnrollmentAsync(It.IsAny <Enrollment>()))
.ReturnsAsync(new Enrollment {
StudentId = studentId, CourseId = courseId
})
.Verifiable();
var service = new EnrollmentService(mockRepository.Object, mockLogger.Object);
var result = await service.AddCourseToStudentAsync(studentId, courseId);
Assert.Equal(studentId, result.StudentId);
Assert.Equal(courseId, result.CourseId);
mockRepository.Verify();
}