public void Slope_AtypicalSlope_ReturnsSlope()
{
Line2D sut = new Line2D(new Point(0, 0), new Point(4, 4));
decimal result = sut.Slope();
result.ShouldBe((decimal)1);
}
public void Slope_FlatSlope_Returns0()
{
Line2D sut = new Line2D(new Point(0, 0), new Point(4, 0));
decimal result = sut.Slope();
result.ShouldBe((decimal)0);
}
public void Slope_InfiniteSlope_ReturnsSlope()
{
Line2D sut = new Line2D(new Point(0, 0), new Point(0, 4));
bool thrown = false;
try
{
sut.Slope();
}
catch (DivideByZeroException)
{
thrown = true;
}
thrown.ShouldBe(true);
}
public bool IntersectsWith(Line2D otherLine)
{
return Slope() != otherLine.Slope();
}