Test Development Philosophy

Question

I am currently going through http://www.railstutorial.org/

It uses Rspec along with the TDD approach. I understand that writing a lot of tests can help you avoid mistakes as your application becomes more complex, but I don’t understand why you write tests for simple things like having a page name. It seems that you end up writing as many tests as the actual code.

Is it better in the long run, or is it too complicated?

Answer 1

It seems you have finished writing as many tests as the actual code.

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Answer 2

"Test Driven Design" -

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Answer 3

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if (@user.posts.count > @limit.posts)
  # Branch 1
  flash.now[:error] = "You have posted too many times today."
elsif (@user.suspended?)
  # Branch 2
  flash.now[:error] = "Your account is suspended. You cannot post."
else
  if (@post.special? and !@user.can.post_special?)
    # Branch 3
    flash[:warning] = "You cannot create special posts."
    @post.special = false
  # else
    # Branch 4
    # Not branching also has to be tested
  end

  if (@user.recently_created?)
    # Branch 5
    @post.newbie = true
  # else
    # Branch 6
  end

  # Branch 7
end

unless (flash[:error])
  @post.save!
end

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Answer 4

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Answer 5

It seems that you end up writing as many tests as actual code

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Answer 6

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Answer 7

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Throughout the product life cycle , it’s easier to do maintenance work because your test suite will quickly tell you that changes to the code didn’t break anything.