public void T5_line_can_have_mutiple_trains()
{
ICity s1 = CityFactory.CreateCity("Paris");
ICompany c1 = s1.AddCompany("SNCF");
ILine l1 = s1.AddLine("RER A");
ITrain t1 = c1.AddTrain("RER1");
ITrain t2 = c1.AddTrain("RER2");
t1.AssignTo(l1);
t2.AssignTo(l1);
l1.Trains.Count().Should().Be(2);
l1.Trains.Contains(t1).Should().BeTrue();
l1.Trains.Contains(t2).Should().BeTrue();
t1.AssignTo(null);
l1.Trains.Single().Should().BeSameAs(t2);
}
public void T2_when_a_train_is_assigned_to_a_line_he_losts_its_previous_line()
{
ICity s = CityFactory.CreateCity("Paris");
ICompany c = s.AddCompany("SNCF");
ILine l1 = s.AddLine("RER A");
ILine l2 = s.AddLine("RER B");
ITrain t1 = c.AddTrain("RER1");
t1.AssignTo(l1);
t1.Assignment.Should().BeSameAs(l1);
t1.AssignTo(l2);
t1.Assignment.Should().BeSameAs(l2);
l1.Trains.Count().Should().Be(0);
l2.Trains.Single().Should().BeSameAs(t1);
}
public void T4_assigning_a_train_to_a_null_line_removes_its_assignment()
{
ICity s1 = CityFactory.CreateCity("Paris");
ICompany c1 = s1.AddCompany("SNCF");
ILine l1 = s1.AddLine("RER A");
ITrain t1 = c1.AddTrain("RER1");
Action a1 = () => t1.AssignTo(null);
a1.ShouldNotThrow();
t1.AssignTo(l1);
t1.Assignment.Should().BeSameAs(l1);
t1.AssignTo(null);
t1.Assignment.Should().BeNull();
l1.Trains.Count().Should().Be(0);
}
public void T3_trains_and_lines_must_belong_to_the_same_city()
{
ICity s1 = CityFactory.CreateCity("Paris");
ICompany c1 = s1.AddCompany("SNCF");
ILine l1 = s1.AddLine("RER A");
ITrain t1 = c1.AddTrain("RER1");
ICity s2 = CityFactory.CreateCity("Lyon");
ICompany c2 = s2.AddCompany("SNCF");
ILine l2 = s2.AddLine("RER A");
ITrain t2 = c2.AddTrain("RER1");
Action a1 = () => t1.AssignTo(l1);
Action a2 = () => t1.AssignTo(l2);
a1.ShouldNotThrow();
a2.ShouldThrow <ArgumentException>();
}
public void T1_trains_can_be_assigned_to_a_line()
{
ICity s = CityFactory.CreateCity("Paris");
ICompany c = s.AddCompany("SNCF");
ITrain t1 = c.AddTrain("RER1");
ITrain t2 = c.AddTrain("RER2");
t1.Assignment.Should().BeNull();
t2.Assignment.Should().BeNull();
ILine l = s.AddLine("RER A");
t1.AssignTo(l);
t1.Assignment.Should().BeSameAs(l);
t2.Assignment.Should().BeNull();
l.Trains.Count().Should().Be(1);
l.Trains.Single().Should().BeSameAs(t1);
}
