public void InsertSubfieldTest()
{
string tag = "600";
List <Subfield> subfields = new List <Subfield>();
Subfield subfield = new Subfield('b', "Anne Author");
subfields.Add(subfield);
subfield = new Subfield('d', "Some text");
subfields.Add(subfield);
subfield = new Subfield('2', "Some more text");
subfields.Add(subfield);
subfield = new Subfield('3', "Some fancy text");
subfields.Add(subfield);
subfield = new Subfield('5', "Some more fancy text");
subfields.Add(subfield);
DataField target = new DataField(tag, subfields);
Subfield newSubfield = new Subfield('a', "Testing an insert at the beginning!");
target.InsertSubfield(newSubfield);
newSubfield = new Subfield('c', "Testing an insert between letters!");
target.InsertSubfield(newSubfield);
newSubfield = new Subfield('e', "Testing an insert at the end of letters before numbers");
target.InsertSubfield(newSubfield);
newSubfield = new Subfield('1', "Testing a numbered insert before numbers!");
target.InsertSubfield(newSubfield);
newSubfield = new Subfield('4', "Testing a numbered insert between numbers!");
target.InsertSubfield(newSubfield);
newSubfield = new Subfield('6', "Testing a numbered insert after numbers!");
target.InsertSubfield(newSubfield);
Assert.AreEqual('a', target.Subfields[0].Code);
Assert.AreEqual('b', target.Subfields[1].Code);
Assert.AreEqual('c', target.Subfields[2].Code);
Assert.AreEqual('d', target.Subfields[3].Code);
Assert.AreEqual('e', target.Subfields[4].Code);
Assert.AreEqual('1', target.Subfields[5].Code);
Assert.AreEqual('2', target.Subfields[6].Code);
Assert.AreEqual('3', target.Subfields[7].Code);
Assert.AreEqual('4', target.Subfields[8].Code);
Assert.AreEqual('5', target.Subfields[9].Code);
Assert.AreEqual('6', target.Subfields[10].Code);
}
