public async Task Fails_to_add_student_that_is_already_added()
{
var group = Fixture.DataMother.CreateGroup(studentNames: new[] { "Timo Hermans" });
var request = new StudentAddToGroup.Request
{
Name = "Timo Hermans",
GroupId = group.Id
};
var useCase = new StudentAddToGroup(Fixture.CreateDbContext());
var result = await useCase.HandleAsync(request);
result.IsFailure.Should().BeTrue();
result.Error.Should().Contain("already");
}
public async Task Adds_student_to_group()
{
var group = Fixture.DataMother.CreateGroup();
var request = new StudentAddToGroup.Request
{
Name = "Timo Hermans",
GroupId = group.Id
};
var useCase = new StudentAddToGroup(Fixture.CreateDbContext());
var result = await useCase.HandleAsync(request);
result.IsSuccess.Should().BeTrue();
Fixture.DataMother.GroupWithStudents()
.ShouldExist()
.HasStudent("Timo Hermans");
}
private async Task <IActionResult> AddStudentToGroup()
{
if (!ModelState.IsValid)
{
return(Page());
}
try
{
await _useCase.HandleAsync(Student);
}
catch (InvalidOperationException ex)
{
ModelState.AddModelError("Summary", ex.Message);
return(Page());
}
return(Page());
}