void InsertRange_throws_if_invalid_input()
{
var instructions = GetInstructions();
InstructionList list;
list = new InstructionList(Array.Empty <Instruction>());
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(-1), instructions));
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(1), instructions));
Assert.Throws <ArgumentNullException>(() => list.InsertRange(GetValue(0), null));
list = new InstructionList(instructions);
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(-1), instructions));
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(int.MinValue), instructions));
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(int.MaxValue), instructions));
Assert.Throws <ArgumentOutOfRangeException>(() => list.InsertRange(GetValue(list.Count + 1), instructions));
Assert.Throws <ArgumentNullException>(() => list.InsertRange(GetValue(0), null));
}
void InsertRange_works(int index, InstructionList list, IEnumerable <Instruction> inserted, Instruction[] expected)
{
list.InsertRange(index, inserted);
Assert.Equal(expected.Length, list.Count);
Assert.True(expected.Length <= list.Capacity);
var listElems = new Instruction[list.Count];
list.CopyTo(listElems);
AssertEqual(expected, listElems);
}