public void When_RemoveElement_Expect_Reference(int index)
{
var vector = new SparseVector <double>();
vector.GetElement(1).Value = 1;
vector.GetElement(2).Value = 2;
vector.GetElement(3).Value = 3;
vector.RemoveElement(index);
for (var i = 1; i <= 3; i++)
{
if (i == index)
{
Assert.AreEqual(null, vector.FindElement(i));
}
else
{
Assert.AreEqual(i, vector.FindElement(i).Value);
}
}
}
public void When_SwappingVectorElements_Expect_Reference()
{
// Test swapping of elements in all possible combinations
for (int i = 0; i < 32; i++)
{
// Setup
SparseVector <double> vector = new SparseVector <double>(5);
int fill = i;
for (int k = 1; k <= 5; k++)
{
if ((fill & 0x01) != 0)
{
vector[k] = k;
}
fill = (fill >> 1) & 0b011111;
}
// Swap rows
vector.Swap(2, 4);
// Check
fill = i;
for (int k = 1; k <= 5; k++)
{
int realk = k;
if (k == 2)
{
realk = 4;
}
else if (k == 4)
{
realk = 2;
}
if ((fill & 0x01) != 0)
{
Assert.AreEqual(k, vector[realk], 1e-12);
}
else
{
Assert.AreEqual(vector.FindElement(realk), null);
}
fill = (fill >> 1) & 0b011111;
}
}
}
