I'm having some difficulty figuring out the correct syntax for calling a Vararg with lambdas. The Kotlin converter in IDEA gave me what is shown below. But it results in a compile error. What's the syntax I need?

public static void assertAll(String heading, Executable... executables)

// "Executable" is an interface with a single "execute()" method

// JAVA
assertAll("test the 'add' method",
          () -> assertEquals(4, calculator.add(2, 2)),
          () -> assertEquals(5, calculator.add(2, 3))
);

// KOTLIN
# the 'assertEquals' is underscored with error "None of the following functions can be called with the arguments supplied."
assertAll("test the 'add' method", 
          { assertEquals(4, calculator.add(2, 2)) },
          { assertEquals(5, calculator.add(2, 3)) }
         )

javaru: This is JUnit 5, right?

Yes it is

Adding the

Executable

before the lambda works like a charm. Thanks. I'll vote for the feature requesting to simplify the syntax. Thanks for the assist!

I'd suggest adding an

assertAll

function to your test code similar to that one I'm using to get it now.

A good idea. Thanks.