private static void RunOldImplementation()
{
Console.WriteLine("Running old implementation.");
var settingsRepo = new SettingsRepo();
var age = 36;
var weight = 70;
var height = 170;
var avgHealthPoints = 7.4;
var oldHandler = new OldDsfHandler(settingsRepo);
var resultFromOldHandler = oldHandler.GetDecisionSupportFactor(age, weight, height, avgHealthPoints);
Console.WriteLine($"Decision support factor: {resultFromOldHandler}");
}
public void RefactoredCodeProducesSameResultAsOriginalCode(int age, int weight, int height, double avgHealthPoints)
{
// Arrange
var oldDsfHandler = new OldDsfHandler(new SettingsRepo());
var actualRequest = new DsfRequest(age, weight, height, avgHealthPoints, "", "", "", "");
var handler = new CheckBmiRule();
handler.SetNext(new CheckAgeRule())
.SetNext(new CheckAvgHealthPointsRule())
.SetNext(new CalculateDsfFactorRule())
.SetNext(new CheckAgainstMaxDsfFactorRule())
.SetNext(new CheckAgainstMinDsfFactorRule());
// Act
var expectedDsfValue = oldDsfHandler.GetDecisionSupportFactor(age, weight, height, avgHealthPoints);
handler.Handle(actualRequest);
// Assert
Assert.Equal(expectedDsfValue, actualRequest.DsfFactor);
}
