import org.junit.Test


class NullabilityChangesTest : AbstractBinaryCompatibilityTest() {

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

        checkNotBinaryCompatibleJava(
            v1 = """
                public class Source {
                    public String nonFinalField = "some";
                    public final String finalField = "some";

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

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