A TDD example: Part three

- In this movie, we'll continue…our test driven development example.…We've written test and code for the…first three items on our list.…You might think that we're ready…to move onto item number four…but I noticed something about our test…that we should pause a moment to consider.…It occurred to me that in our previous test…we're setting doors equal to one…and that doesn't really make sense.…It doesn't really match with what our client asked us for.…They said they wanted to know…whether a car was a 2-door coupe…or a 4-door sedan.…

So, it kind of implies that they're expecting it…to be either 2 or 4.…We didn't pick that up in our original specifications…but once I stopped and thought about it…I realized that that is something…that we actually need to have another example for.…So, my solution is that I think if it's not 2 or 4…that it should then default to 4…since 4 is our default.…So, if they give us twenty as the number of doors…we're not gonna accept that.…We're gonna use the default of 4…but if they give us 2 that is acceptable…