Software Architecture and Thinking. Raising TDD from the dead.

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Who am I ? @l3l0 http://github.com/l3l0

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Agenda Basics about TDD. Mocking explanation. Software Architecture and TDD. How TDD impact the speed of development?

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What is TDD?

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Are we really testing?

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TDD is about code specification and planning.

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PHPSpec

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PHPSpec

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Few words about mocking.

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Dummy, Stub, Mock.

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Dummy

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Production code

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Stub

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Production code

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Mock

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Production code

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States vs Messages.

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OOP is about messaging.

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Mockist TDD is about planning communication, interfaces and message protocols.

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Classic TDD is about planning expected state or just checking the result.

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Mockist TDD example

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Classic TDD example

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Classic TDD example

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Mock or not to mock?

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Mocking drawbacks.

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Classic approach drawbacks.

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Let's find the balance!

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TDD as a software design tool.

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TDD is an enabler for thinking about communication and messages.

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Revealing object dependencies.

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Mocking allow to design base on abstraction, so finish with...

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TDD and development time.

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Do you spend more time writing code doing TDD?

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I bet you DO! but...

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What about time spent on fixing bugs ? What about time spent on creating upfront design ? What about time spent on manually testing our work ?

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SO...

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IS TDD DEAD ?

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FU***NG NO!!!

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Thanks!

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http://cocoders.com @l3l0 l3l0 [at] cocoders.com https://github.com/l3l0/tdd-architecture-talk-exam ples