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C# Unit Testing in C# What To Test Isolation Testing

Posted by Michal Slotwinski
Michal Slotwinski
13,811 Points

class must be public to unit test ?

Hi,

I had issues with xunit, seems like forgotten library in 2019... I have been testing before with MS unit test library, so decided to use this instead. However every class needs to be public to access it, so Im changing accessibility in order to follow the course... Did I missed something or its the framework difference ? Obviously changing classes to public isn't good thing to do.

2 Answers

Dane Parchment
MOD
Dane Parchment
Treehouse Moderator 11,075 Points
Dane Parchment
Dane Parchment
Treehouse Moderator 11,075 Points

You are sort of correct.

You shouldn't be writing unit tests for private classes, the methods in that private class however, should be accessible via public methods and as such can be tested in that way. I am at work right now though, will add more to this answer when I get back.

Michal Slotwinski
Michal Slotwinski
13,811 Points
Michal Slotwinski
Michal Slotwinski
13,811 Points

thanks, Dane.

I'm kinda stuck in here, instructors MockInvader class inherits from IInvader, IInvader inherits from 2 other interfaces which are protected therefore I cannot make IInvader public for tests.