public void Empty()
{
var trend = new LinearTrend();
Assert.That(trend.Slope, Is.Null, "Slope");
Assert.That(trend.Offset, Is.Null, "Offset");
}
public void One()
{
var trend = new LinearTrend();
trend.Add(1, 1);
Assert.That(trend.Slope, Is.EqualTo(0), "Slope");
Assert.That(trend.Offset, Is.EqualTo(1), "Offset");
}
public void Two_Increasing()
{
var trend = new LinearTrend();
trend.Add(1, 1);
trend.Add(2, 2);
Assert.That(trend.Slope, Is.EqualTo(1), "Slope");
Assert.That(trend.Offset, Is.EqualTo(0), "Offset");
}
public void Case_1()
{
var trend = new LinearTrend();
trend.Add(1, 1581); // +1581
trend.Add(2, 3915); // +2334
trend.Add(3, 5584); // +1669
// avg: +1861
Assert.That(trend.Slope, Is.EqualTo(2001.5), "Slope");
Assert.That(trend.Offset, Is.EqualTo(-310).Within(1), "Offset");
}