[TIP] unittest or tdd in image processing

[Puntis Jifroodian-Haghighi]

Hi, 


I'm learning unit testing in python and I need to try it in image processing. But I can't think of any test case which is applicable in image processing domain. I work with images in my application and it's very different from checking the result of adding two values. Does anyone have any suggestion or knows of a reference which can help me to design unit tests in image processing domain?

Thanks in Advance,
Puntis
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