TDD like Beethoven

José E. Rodríguez Huerta (@jrhuerta)

Beethoven

@jrhuerta

@jrhuerta

The Constraints

Get a small problem you want to solve in code

You can use all the documentation you need

You can use a text editor with syntax highlighting, but…

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The Constraints

Do not compile or run the solution! 

Do not use auto-complete!

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“composing”

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“composing”

Come up with a test and write it down in the text editor.

Reason about why it must fail right now.

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“composing”

Write down the code that will make the test green. Explain to yourself why it

will make the test pass.

Double check for syntax errors, exceptions...

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“composing”

Refactor the code. Explain to yourself/PARTNER why the

refactoring is better.

Explain why all the tests still pass.

Double check for syntax errors, exceptions, ...

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“composing”

Repeat until finished

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GRAND OPENING

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GRAND OPENING

Compile and run

Change the code so it runs and compiles

Write down all the changes you had to make

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Powerful Questions

How did it feel?

Why was it different?

How is it going to help you?

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THANK YOU for PARTICIPATING!

and to David Tanzer

for the original idea!

@jrhuerta