public void ReplaceFeatureTest()
{
Feature testingFeature = new DoubleFeature(new AbsoluteDistance(), 2.0);
Feature replacement = new DoubleFeature(new AbsoluteDistance(), 6.0);
Observation testingObs = new Observation(1);
testingObs.AddFeature(testingFeature);
testingObs.ReplaceFeature(0, replacement);
Assert.AreSame(replacement, testingObs.GetFeature(0));
Assert.AreEqual(6.0, testingObs.GetFeature(0).FeatureValue);
}