public void Test_AddRelationship_AllowsMultipleRelationshipsBetweenElements()
{
SoftwareSystem element1 = Model.AddSoftwareSystem("Element 1", "Description");
SoftwareSystem element2 = Model.AddSoftwareSystem("Element 2", "Description");
Relationship relationship1 = element1.Uses(element2, "Uses in some way", "");
Relationship relationship2 = element1.Uses(element2, "Uses in another way", "");
Assert.True(element1.Has(relationship1));
Assert.True(element1.Has(relationship2));
Assert.Equal(2, element1.Relationships.Count);
}
public void Test_AddRelationship_DisallowsTheSameRelationshipToBeAddedMoreThanOnce()
{
SoftwareSystem element1 = Model.AddSoftwareSystem("Element 1", "Description");
SoftwareSystem element2 = Model.AddSoftwareSystem("Element 2", "Description");
Relationship relationship1 = element1.Uses(element2, "Uses", "");
Relationship relationship2 = element1.Uses(element2, "Uses", "");
Assert.True(element1.Has(relationship1));
Assert.Null(relationship2);
Assert.Equal(1, element1.Relationships.Count);
}
