public void Test_Enumerable_Segmentation_1()
{
Vector x = new[] { 1d, 2, 3, 4, 5, 6, 7, 8, 9 };
Assert.Throws(typeof(InvalidOperationException),
() => x.Segment(1)
);
}
public void Test_Enumerable_Segmentation_2()
{
Vector x = new[] { 1d, 2, 3, 4, 5, 6, 7, 8, 9 };
var ranges = x.Segment(2);
var truth = new Range[]
{
Range.Make(1, 5),
Range.Make(5, 9.01),
};
Assert.AreEqual(truth.Length, ranges.Length);
for (int i = 0; i < truth.Length; i++)
{
Assert.AreEqual(truth[i].Min, ranges[i].Min);
Assert.AreEqual(truth[i].Max, ranges[i].Max);
}
}
public void TestSegmentationStartsWithSecondItem()
{
var sequence = new[] { 0 };
var resultA = sequence.Segment((Func<int, bool>)delegate { throw new Exception(); });
var resultB = sequence.Segment((Func<int, int, bool>)delegate { throw new Exception(); });
var resultC = sequence.Segment((Func<int, int, int, bool>)delegate { throw new Exception(); });
Assert.IsTrue(resultA.Any());
Assert.IsTrue(resultB.Any());
Assert.IsTrue(resultC.Any());
}
public void Test_Enumerable_Segmentation_4()
{
Vector x = new[] { 1d, 2, 3, 4, 5, 6, 7, 8, 9 };
var ranges = x.Segment(4);
var segmentsize = 8d / 4d;
var truth = new Range[]
{
Range.Make(1, 1 + segmentsize),
Range.Make(1 + segmentsize, 1 + 2 * segmentsize),
Range.Make(1 + 2 * segmentsize, 1 + 3 * segmentsize),
Range.Make( 1 + 3 * segmentsize, 9.01)
};
Assert.AreEqual(truth.Length, ranges.Length);
for (int i = 0; i < truth.Length; i++)
{
Assert.AreEqual(truth[i].Min, ranges[i].Min);
Assert.AreEqual(truth[i].Max, ranges[i].Max);
}
}
