Testing library ‐ mockk

Contents
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How it is useful
When we use relaxed param in mockk
When to use every{ ... } and when to use coEvery{ ... }

How it is useful

• So we know when we have a class used in another class, We can make a fake version of that class and pass the fake implementation where it is being used to avoid errors in the actual implementation.
• There is another way where we can mock it.
• Basically mocking involves using a mirror version of the actual class implementation and once it is mirrored we can make the methods of that particular class behave as we want so that when the implementation of the class is used in another class they return or respond in a particular way.

When we use relaxed param in mockk

• Consider the code mockk() and compared to another mockk(relaxed = true)
• When relaxed=true is used the framework will give random values like empty, false, etc .. for the functions that contain return types otherwise the return types are not provided, and the mocked instance bay gives an error while running the test.
• Also we use this when we need the instance and do not bother with specific return types so random return types are fine.

When to use every{ ... } and when to use coEvery{ ... }

• When normal functions are to be invoked we used every { ... }
• When sus[end functions are involved , We use coEvery{ ... }