BC native tests port to Konan's TestRunner

backend.native/tests/codegen/enum/test1.kt

@@ -1,8 +1,12 @@
+package codegen.enum.test1
+
+import kotlin.test.*
+
 enum class Zzz(val zzz: String, val x: Int) {
     Z1("z1", 1),
     Z2("z2", 2)
 }
 
-fun main(args: Array<String>) {
+@Test fun runTest() {
     println(Zzz.Z1.zzz + Zzz.Z2.x)
 }