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Output from GPX Editor

Distance (km)

Spe

ed (

kmph

) –

Alti

tude

(m

/100

)

Runkeeper design

Waypoints

Dis

tanc

e (k

m)

– tim

e (m

inut

es)

TDD Cycle

Always fake it if you can!

• Tie your objects to interfaces• Mock them whenever you can

Fake Talk

• Fakes• Stubs• Mocks

Why fake it?

• It’s easier • There is a good kind of lazy• Promotes RTFM

RTFM!

• A test should be– Repeatable– Trustworthy– Fast– Maintainable

Questions