What’s the difference between using ```every {} returns something``` and ```every {} answers {someth...

# mockk

[voben]

What’s the difference between using

every {} returns something

and

every {} answers {something}

[streetsofboston]

In the first example, something is evaluated only once and immediately.

The 2nd example does not evaluate something immediately and will evaluate it later, each time when the mocked method is called.

[viralshah]

adding onto that, usually you give a lambda supplier to calculate the result to the answers clause where as returns takes an actual result

[ivano]

I thought answers was for the callbacks only

[s1m0nw1]

You can use answers to access the passed in parameters to respond with a specialized return value

[LeoColman]

You can also use answers to a more "complex" mock, that do more things

[LeoColman]

every {} answers { println("Mock!"); something }