public void Segment_read_full_array_exactly_multiple_empty_at_end()
{
// Can fully accomodate an array and get multiple empty segments at end
var a = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var s = new VA.Collections.ArraySegmentEnumerator <int>(a);
var s1 = s.GetNextSegment(1);
var s2 = s.GetNextSegment(4);
var s3 = s.GetNextSegment(3);
var s4 = s.GetNextSegment(0);
var s5 = s.GetNextSegment(0);
Assert.AreEqual(0, s1.Offset);
Assert.AreEqual(1, s1.Count);
Assert.AreEqual(1, s2.Offset);
Assert.AreEqual(4, s2.Count);
Assert.AreEqual(5, s3.Offset);
Assert.AreEqual(3, s3.Count);
Assert.AreEqual(8, s4.Offset);
Assert.AreEqual(0, s4.Count);
Assert.AreEqual(8, s5.Offset);
Assert.AreEqual(0, s5.Count);
}
public void Segment_error_if_asked_to_produce_too_much_2()
{
// fails if asks too much - current position is at start middle strt of array after asking for empty segment
var a = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var s = new VA.Collections.ArraySegmentEnumerator <int>(a);
var s1 = s.GetNextSegment(0);
Assert.AreEqual(0, s1.Offset);
Assert.AreEqual(0, s1.Count);
_check_overflow(s, 9);
}
public void Segment_error_if_asked_to_produce_too_much_1()
{
// fails if asks too much - current position is in middle of array
var a = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var s = new VA.Collections.ArraySegmentEnumerator <int>(a);
var s1 = s.GetNextSegment(4);
Assert.AreEqual(0, s1.Offset);
Assert.AreEqual(4, s1.Count);
_check_overflow(s, 5);
}
public void Segment_ask_for_entire_array_at_once()
{
// fails if asks too much - current position is at start middle of array
var a = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var s = new VA.Collections.ArraySegmentEnumerator <int>(a);
var s1 = s.GetNextSegment(8);
Assert.AreEqual(0, s1.Offset);
Assert.AreEqual(8, s1.Count);
_check_overflow(s, 1);
}
private static void _check_overflow(VA.Collections.ArraySegmentEnumerator <int> s, int size)
{
bool caught = false;
try
{
var s2 = s.GetNextSegment(size);
}
catch (System.ArgumentOutOfRangeException e)
{
caught = true;
}
if (!caught)
{
Assert.Fail("Did not catch expected exception");
}
}
public void Basics()
{
// Check that nulls cannot be passed in
bool caught = false;
try
{
var s = new VA.Collections.ArraySegmentEnumerator <int>(null);
}
catch (System.ArgumentNullException e)
{
caught = true;
}
if (!caught)
{
Assert.Fail("Did not catch expected exception");
}
}
public void Segment_read_full_array_exactly()
{
// Can fully accomodate an array
var a = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
var s = new VA.Collections.ArraySegmentEnumerator <int>(a);
var s1 = s.GetNextSegment(1);
var s2 = s.GetNextSegment(4);
var s3 = s.GetNextSegment(3);
Assert.AreEqual(0, s1.Offset);
Assert.AreEqual(1, s1.Count);
Assert.AreEqual(1, s2.Offset);
Assert.AreEqual(4, s2.Count);
Assert.AreEqual(5, s3.Offset);
Assert.AreEqual(3, s3.Count);
}