public async Task ValidateAsync_should_succeed_when_command_valid()
{
var unitOfWork = NSubstitute.Substitute.For <ISchoolUnitOfWork>();
var sut = new CreateStudentValidator(unitOfWork);
var command = new CreateStudent(Guid.NewGuid(), "new", "Student");
var result = await sut.ValidateAsync(command, CancellationToken.None);
result.Should().NotBeNull();
result.Success.Should().BeTrue();
result.Errors.Should().BeEmpty();
}
public async Task ValidateAsync_should_fail_when_Student_with_same_id_already_exists()
{
var student = new Student(Guid.NewGuid(), "existing", "Student");
var repo = NSubstitute.Substitute.For <IStudentsRepository>();
repo.FindByIdAsync(Arg.Any <Guid>(), Arg.Any <CancellationToken>())
.ReturnsForAnyArgs(student);
var unitOfWork = NSubstitute.Substitute.For <ISchoolUnitOfWork>();
unitOfWork.StudentsRepository.ReturnsForAnyArgs(repo);
var sut = new CreateStudentValidator(unitOfWork);
var command = new CreateStudent(student.Id, "another", "Student");
var result = await sut.ValidateAsync(command, CancellationToken.None);
result.Should().NotBeNull();
result.Success.Should().BeFalse();
result.Errors.Should().Contain(e =>
e.Context == nameof(CreateStudent.StudentId) && e.Message.Contains(student.Id.ToString()));
}
public CreateStudentValidatorTests()
{
validator = new CreateStudentValidator();
}
