How to write Nested ParametrizedTest with MethodSource in Kotlin?

I'm learning how to write test in Kotlin with JUnit 5. I like using feature like @Nested, @ParametrizedTest and @MethodSource when I was writing Java. But when I switch to Kotlin, I encounter an issue:

I figured out how to use

• @Nested by referring this JUnit test in nested Kotlin class not found when running gradle test
• @ParametrizedTest and @MethodSource by referring JUnit 5 for Kotlin Developers - section 4.2

But when I put this together, I got

Companion object is not allowed here.

inside the inner class.

Test to reproduce the error

internal class SolutionTest {
    @Nested
    inner class NestedTest {
        @ParameterizedTest
        @MethodSource("testCases")
        fun given_input_should_return_expected(input: Int, expected: Int) {
            // assert
        }

        // error in below line
        companion object {
            @JvmStatic
            fun testCases(): List<Arguments> {
                return emptyList()
            }
        }
    }
}

Is it possible to solve this error? So I can use @Nested, @ParametrizedTest and @MethodSource together?

If you don't mind having @TestInstance(PER_CLASS), you can then define your MethodSource method just like a normal Kotlin method, without needing a companion object:

internal class SolutionTest {
    @Nested
    @TestInstance(PER_CLASS)
    inner class NestedTest {
        @ParameterizedTest
        @MethodSource("testCases")
        fun given_input_should_return_expected(input: Int, expected: Int) {
            // assert
        }

        fun testCases(): List<Arguments> {
            return emptyList()
        }
    }
}