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C# Unit Testing in C# Test Driven Development TDD

Posted by kathyvuong
kathyvuong
9,299 Points

Stub out the Calculator class so that the code compiles, but the test cases in CalculatorTests fail as expected.

what's exactly Stub out mean?? I don't understand...this is my code: using System; public class Calculator { public double Add(double val) var double Result = 0.0; { return Result; } } And keep telling me Unexpected symbol "double" Can someone please help me. Thank you.

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The term "stub out" means to minimally implement the required elements for the code to compile but not necessary operate. From looking at how the class will be used, you can see that the "Calculator" class will need:

  • a constructor that takes a double argument
  • a public property named "Result"
  • a method named "Add" that takes a double argument

And the error is caused by the declaration "var double", only one of those words should be used at a time.