# Interfaces and Testability

**URL:** <https://forum.codewithmosh.com/t/interfaces-and-testability/5306>\
**Category:** C#\
**Created:** [June 5, 2021, 6:22am UTC](https://forum.codewithmosh.com/t/interfaces-and-testability/5306 "2021-06-05T06:22:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sandeep-sparrow](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.codewithmosh.com/sandeep-sparrow/32/1440_2.png) [@sandeep-sparrow](https://forum.codewithmosh.com/u/sandeep-sparrow)\
**Post date:** [June 5, 2021, 6:22am UTC](https://forum.codewithmosh.com/t/interfaces-and-testability/5306/1 "2021-06-05T06:22:13Z")

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For the Interfaces and Testability, Mosh has Explained Testability and interfaces, can someone share the Project code, I tried to Create order Class but not able to understand how isShipped Condition is Checked.

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**Author:** ![sandeep-sparrow](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.codewithmosh.com/sandeep-sparrow/32/1440_2.png) [@sandeep-sparrow](https://forum.codewithmosh.com/u/sandeep-sparrow)\
**Post date:** [July 31, 2021, 4:41am UTC](https://forum.codewithmosh.com/t/interfaces-and-testability/5306/2 "2021-07-31T04:41:45Z")

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Can someone please reply to this

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**Author:** ![SAM](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.codewithmosh.com/sam/32/167_2.png) [@SAM](https://forum.codewithmosh.com/u/SAM)\
**Post date:** [July 31, 2021, 8:02am UTC](https://forum.codewithmosh.com/t/interfaces-and-testability/5306/3 "2021-07-31T08:02:18Z")

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The source code is in the [Source Code lesson of the Introduction section](https://codewithmosh.com/courses/224763/lectures/3497536).