import org.junit.Test


class KotlinNullabilityChangesTest : AbstractBinaryCompatibilityTest() {

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

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

            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)

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) {}