public void Increment()
{
var a = new MemoryGroupIndex(10, 3, 3);
a += 1;
Assert.Equal(new MemoryGroupIndex(10, 3, 4), a);
}
public void SmallerElementIndex()
{
var a = new MemoryGroupIndex(10, 3, 3);
var b = new MemoryGroupIndex(10, 3, 9);
Assert.False(a == b);
Assert.True(a != b);
Assert.True(a < b);
Assert.False(a > b);
}
public void SmallerBufferIndex()
{
var a = new MemoryGroupIndex(10, 3, 3);
var b = new MemoryGroupIndex(10, 5, 3);
Assert.False(a == b);
Assert.True(a != b);
Assert.True(a < b);
Assert.False(a > b);
}
public void Increment_OverflowBuffer()
{
var a = new MemoryGroupIndex(10, 5, 3);
var b = new MemoryGroupIndex(10, 5, 9);
a += 8;
b += 1;
Assert.Equal(new MemoryGroupIndex(10, 6, 1), a);
Assert.Equal(new MemoryGroupIndex(10, 6, 0), b);
}
public void Equal()
{
var a = new MemoryGroupIndex(10, 1, 3);
var b = new MemoryGroupIndex(10, 1, 3);
Assert.True(a.Equals(b));
Assert.True(a == b);
Assert.False(a != b);
Assert.False(a < b);
Assert.False(a > b);
}
public void TransformInplace(int totalLength, int bufferLength)
{
using MemoryGroup <int> src = this.CreateTestGroup(10, 20, true);
src.TransformInplace(s => MultiplyAllBy2(s, s));
int cnt = 1;
for (MemoryGroupIndex i = src.MinIndex(); i < src.MaxIndex(); i += 1)
{
int val = src.GetElementAt(i);
Assert.Equal(expected: cnt * 2, val);
cnt++;
}
}
public void WhenSourceBufferIsShorterOrEqual(int srcTotal, int srcBufLen, int trgTotal, int trgBufLen)
{
using MemoryGroup <int> src = this.CreateTestGroup(srcTotal, srcBufLen, true);
using MemoryGroup <int> trg = this.CreateTestGroup(trgTotal, trgBufLen, false);
src.CopyTo(trg);
int pos = 0;
MemoryGroupIndex i = src.MinIndex();
MemoryGroupIndex j = trg.MinIndex();
for (; i < src.MaxIndex(); i += 1, j += 1, pos++)
{
int a = src.GetElementAt(i);
int b = trg.GetElementAt(j);
Assert.True(a == b, $"Mismatch @ {pos} Expected: {a} Actual: {b}");
}
}
/// <summary>
/// Create a group, either uninitialized or filled with incrementing numbers starting with 1.
/// </summary>
internal MemoryGroup <int> CreateTestGroup(long totalLength, int bufferLength, bool fillSequence = false)
{
this.MemoryAllocator.BufferCapacityInBytes = bufferLength * sizeof(int);
var g = MemoryGroup <int> .Allocate(this.MemoryAllocator, totalLength, bufferLength);
if (!fillSequence)
{
return(g);
}
int j = 1;
for (MemoryGroupIndex i = g.MinIndex(); i < g.MaxIndex(); i += 1)
{
g.SetElementAt(i, j);
j++;
}
return(g);
}
public void SpanToGroup_Success(long totalLength, int bufferLength, int spanLength)
{
var src = new int[spanLength];
for (int i = 0; i < src.Length; i++)
{
src[i] = i + 1;
}
using MemoryGroup <int> trg = this.CreateTestGroup(totalLength, bufferLength);
src.AsSpan().CopyTo(trg);
int position = 0;
for (MemoryGroupIndex i = trg.MinIndex(); position < spanLength; i += 1, position++)
{
int expected = position + 1;
Assert.Equal(expected, trg.GetElementAt(i));
}
}
public static void SetElementAt <T>(this IMemoryGroup <T> group, MemoryGroupIndex idx, T value)
where T : struct
{
group[idx.BufferIndex].Span[idx.ElementIndex] = value;
}
public static T GetElementAt <T>(this IMemoryGroup <T> group, MemoryGroupIndex idx)
where T : struct
{
return(group[idx.BufferIndex].Span[idx.ElementIndex]);
}