Unit Testing - Am I doing it right?
- by baron
Hi everyone,
Basically I have been programing for a little while and after finishing my last project can fully understand how much easier it would have been if I'd have done TDD. I guess I'm still not doing it strictly as I am still writing code then writing a test for it, I don't quite get how the test becomes before the code if you don't know what structures and how your storing data etc... but anyway...
Kind of hard to explain but basically lets say for example I have a Fruit objects with properties like id, color and cost. (All stored in textfile ignore completely any database logic etc)
FruitID FruitName FruitColor FruitCost
1 Apple Red 1.2
2 Apple Green 1.4
3 Apple HalfHalf 1.5
This is all just for example. But lets say I have this is a collection of Fruit (it's a List<Fruit>) objects in this structure. And my logic will say to reorder the fruitids in the collection if a fruit is deleted (this is just how the solution needs to be).
E.g. if 1 is deleted, object 2 takes fruit id 1, object 3 takes fruit id2.
Now I want to test the code ive written which does the reordering, etc.
How can I set this up to do the test?
Here is where I've got so far. Basically I have fruitManager class with all the methods, like deletefruit, etc. It has the list usually but Ive changed hte method to test it so that it accepts a list, and the info on the fruit to delete, then returns the list.
Unit-testing wise: Am I basically doing this the right way, or have I got the wrong idea? and then I test deleting different valued objects / datasets to ensure method is working properly.
[Test]
public void DeleteFruit()
{
var fruitList = CreateFruitList();
var fm = new FruitManager();
var resultList = fm.DeleteFruitTest("Apple", 2, fruitList);
//Assert that fruitobject with x properties is not in list ? how
}
private static List<Fruit> CreateFruitList()
{
//Build test data
var f01 = new Fruit {Name = "Apple",Id = 1, etc...};
var f02 = new Fruit {Name = "Apple",Id = 2, etc...};
var f03 = new Fruit {Name = "Apple",Id = 3, etc...};
var fruitList = new List<Fruit> {f01, f02, f03};
return fruitList;
}
