public void Simplfy_Items_Null_ThrowsException()
{
IEnumerable <ICoordinate> items = default(IEnumerable <ICoordinate>);
int multiple = 2;
NthPointFilter.Simplify(items, multiple);
}
public void Simplfy_MaximumDistance_Negative_ThrowsException()
{
List <ICoordinate> items = new List <ICoordinate>();
items.Add(new Coordinate(0, 0.008));
int multiple = -1;
NthPointFilter.Simplify(items, multiple);
}
public void Simplify_Valid_Assert()
{
List <ICoordinate> items = new List <ICoordinate>();
for (int i = 0; i < 30; i++)
{
items.Add(new Coordinate(i, i));
}
List <ICoordinate> result = new List <ICoordinate>(NthPointFilter.Simplify(items, 4));
// There are 29 items, the first and the last should be kept.
// The remainder should all have a Latitude that is a multiple of 4 because that's how I seeded the data.
Assert.IsTrue(result[0].Latitude.WithinTolerance(0));
Assert.IsTrue(result[1].Latitude.WithinTolerance(4));
Assert.IsTrue(result[2].Latitude.WithinTolerance(8));
Assert.IsTrue(result[3].Latitude.WithinTolerance(12));
Assert.IsTrue(result[4].Latitude.WithinTolerance(16));
Assert.IsTrue(result[5].Latitude.WithinTolerance(20));
Assert.IsTrue(result[6].Latitude.WithinTolerance(24));
Assert.IsTrue(result[7].Latitude.WithinTolerance(28));
Assert.IsTrue(result[8].Latitude.WithinTolerance(29));
}