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# mockk
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xenomachina
09/19/2023, 11:43 PMI have an abstract class that I want to mock, and I want the mocks to pass through to the real implementation if there is one, but throw an exception if a method/property that is not implemented is called. Is this possible without having to
every { implementedMethod() } answers { callOriginal() }k
Klitos Kyriacou
09/20/2023, 8:19 AMWouldn't it be easier to extend the abstract class with a concrete class that throws exceptions instead of using Mockk?
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xenomachina
09/20/2023, 4:35 PMYes, I can do that, but there are almost 30 properties that I'd need to override. They're abstract because in "real" code we want to ensure they have real implementations, but in tests we'd just like them to fail at runtime.
k
Klitos Kyriacou
09/20/2023, 5:00 PMIf your class has 30 abstract properties, it sounds likely that it's violating the Single Responsibility Principle. Nevertheless, you can use
spykx
xenomachina
09/20/2023, 5:22 PMYes, there's definitely some cleanup required in this code, but one step at a time. 😄
For what it's worth, the thing in question is representing the full set of configuration parameters to a service.
Is there a way to change the behavior of
spykI tried modifying the Reflection matchers example from mockk's README, like this:
Copy code
fun mockConfig() : Config {
val props = AbstractTestConfig::class.memberProperties
return mockk<AbstractTestConfig> {
props.forEach { prop ->
every { prop.get(this@mockk) } answers { callOriginal() }
}
}
}AbstractTestConfig3 Views