public static void TestCalculateGain()
{
var decisionTree = new DecisionTree();
double actualResult = decisionTree.CalculateGain(table, "Play Tennis", "Outlook");
Assert.AreEqual(0.246, actualResult, 0.001);
actualResult = decisionTree.CalculateGain(table, "Play Tennis", "Humidity");
Assert.AreEqual(0.151, actualResult, 0.001);
actualResult = decisionTree.CalculateGain(table, "Play Tennis", "Wind");
Assert.AreEqual(0.048, actualResult, 0.001);
actualResult = decisionTree.CalculateGain(table, "Play Tennis", "Temperature");
Assert.AreEqual(0.029, actualResult, 0.001);
}
