v1 = existingSource,
            v2 = internalSource
        ).assertEmptyReport()
    }

    @Test
    fun `existing internal members made public appear as added`() {

        checkNotBinaryCompatibleKotlin(
            v1 = internalSource,
            v2 = publicSource
        ).apply {
            assertHasErrors(
                *reportedMembers.map {
                    added(it.first, it.second)

        @Incubating
        operator fun String.invoke(p: String, block: String.() -> Unit) = Unit

    """

    @Test
    fun `new top-level kotlin members`() {

        checkNotBinaryCompatibleKotlin(
            v2 = """

           $publicKotlinMembers

            const val cathedral = "cathedral"

            """
        ) {

            assertHasNoInformation()

            )
            assertHasNoWarning()
            assertHasNoInformation()
        }
    }

    @Test
    fun `from non-null returning to null returning is breaking (kotlin)`() {

        checkNotBinaryCompatibleKotlin(
            v1 = """
                class Source {
                    val someVal: String = "some"
                    var someVar: String = "some"
                    fun foo(): String = "bar"

import org.junit.Test


class KotlinModifiersChangeTest : AbstractBinaryCompatibilityTest() {

    @Test
    fun `operator or infix modifier change is breaking`() {

        checkNotBinaryCompatibleKotlin(
            v1 = """
                fun Int.invoke(some: Int) {}
                operator fun Boolean.invoke(some: Int) {}

                fun String.invoke(some: Int) {}

        runKotlinBinaryCompatibilityCheck(v1, v2) {
            assertBinaryCompatible()
            block()
        }

    internal
    fun checkNotBinaryCompatibleKotlin(v1: String = "", v2: String, block: CheckResult.() -> Unit = {}): CheckResult =
        runKotlinBinaryCompatibilityCheck(v1, v2) {
            assertNotBinaryCompatible()
            block()
        }