public static void Contains_Returns_True_or_False_Indicating_Presence_of_Segment()
{
List <CartesianCoordinate> coordinates = new List <CartesianCoordinate>()
{
new CartesianCoordinate(1, 1),
new CartesianCoordinate(1, 2),
new CartesianCoordinate(3, 4),
new CartesianCoordinate(5, 6)
};
List <LineSegment> segments = new List <LineSegment>()
{
new LineSegment(coordinates[0], coordinates[1]),
new LineSegment(coordinates[1], coordinates[2]),
new LineSegment(coordinates[2], coordinates[3])
};
SegmentsBoundary boundary = new SegmentsBoundary(segments);
Assert.IsTrue(boundary.Contains(new LineSegment(coordinates[1], coordinates[2])));
Assert.IsFalse(boundary.Contains(
new LineSegment(
new CartesianCoordinate(5, 6),
new CartesianCoordinate(7, 8))));
}
public static void Replace_Replaces_Segment_if_Present()
{
List <CartesianCoordinate> coordinates = new List <CartesianCoordinate>()
{
new CartesianCoordinate(0, 0),
new CartesianCoordinate(1, 2),
new CartesianCoordinate(3, 4),
new CartesianCoordinate(5, 6)
};
List <LineSegment> segments = new List <LineSegment>()
{
new LineSegment(coordinates[0], coordinates[1]),
new LineSegment(coordinates[1], coordinates[2]),
new LineSegment(coordinates[2], coordinates[3])
};
SegmentsBoundary boundary = new SegmentsBoundary(segments);
Assert.AreEqual(3, boundary.Count);
Assert.AreEqual(1, boundary[1].I.X);
Assert.AreEqual(2, boundary[1].I.Y);
// Replaces existing segment
IPathSegment newSegment = new LineSegment(coordinates[2], coordinates[3]);
Assert.IsTrue(boundary.Replace(segments[2], newSegment));
Assert.AreEqual(3, boundary.Count);
Assert.AreEqual(1, boundary[1].I.X);
Assert.AreEqual(2, boundary[1].I.Y);
// Does not replace non-existing segment
IPathSegment newInvalidSegment = new LineSegment(
new CartesianCoordinate(5, 6),
new CartesianCoordinate(7, 8));
Assert.IsFalse(boundary.Replace(segments[2], newInvalidSegment));
Assert.IsFalse(boundary.Replace(newInvalidSegment, segments[2]));
Assert.AreEqual(3, boundary.Count);
Assert.IsFalse(boundary.Contains(newInvalidSegment));
}