how_to.md

Peel

This is for a method where the blocking part is at the outside (top or bottom) of the method

1. Call the Method Example: Method(param1)
2. Select everything that isn't the problem
3. Extract into public method called Method2
4. Call Method2 instead Example:Method2(newParams)

Slice

This is for method where the blocking part is in the middle of the method

1. Call the Method passing null for all params Example: Method(param1)
2. See the failing error:
   Example: Error when calling object.Method(param1,param2);
3. Pass in a mock for the object where the call is failing
4. See the new failing error:
   Example: Unexpected call to object.Method(param1,param2);
5. add Mock behavior for that call
6. repeat

Mock Example

var listMock = new Mock<IList>(MockBehavior.Strict);
listMock.Setup(l => l.Count).Returns(5).AtMost(1);
IList list = listMock.Object;
Assert.AreEqual(5, list.Count);

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Peel & Slice

1. Call Method
2. See Problem
3. Solve Problem
   1. If at Top or Bottom
      1. Peel
   2. If in Middle
      1. Slice
4. Repeat until done