Println("Does list1 have at least one element? $anyInList1") We will call list.any() function on these lists, and observe the output in the two scenarios. In this example, we will take two lists: list1 with two elements, and list2 with no elements. Output Does at least one element in list matches predicate? true Example 2: Check if List has At least One Element Println("Does at least one element in list matches predicate? $anyElementMatchesPredicate") Val anyElementMatchesPredicate = list1.any(predicate) In this example, we will take a list of elements, of type string, and check if at least one of the elements matches the given predicate that the length of string is 3. list.any() Example 1: Check if At least one element of List matches Predicate
If no argument is given to any() function, then it returns true if collection has at least one element. The function returns true if at least one element matches the given predicate. To be able to replace the Mockito.The syntax of List.any() function with a predicate passed to it is list.any(predicate)
I looked on the internet and found some examples of how to overcome this. I have used this library on a large project with many thousand of tests and as I updated the version of the library used different tests failed even before we started using the library.Initially this library depended on a specific version of Kotlin and Mockito, later versions have removed the dependency on Kotlin however I am guessing that testing every combination is not possible.There is no benefit here as we can overcome this issue with less than 10 lines of code. I prefer not to take a dependency unless there is a significant benefit.One possible solution would be to use a library like mockito-kotlin.
If the method being matched is written in Java then I think that it will work as all Java objects are implicitly nullable. This is because it can return void and this is not assignable to a non-nullable parameter. If you have a method written in kotlin that does not take a nullable parameter then we cannot match with it using Mockito.any(). Getting matchers to work with Kotlin can be a problem. Using kotlin and mockito together throws up some interesting problems, I have already looked at some of these.
I have been using Mockito for a while and recently I have started a kotlin project.
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