[K/N][Tests] Move some codegen tests to new infra: annotations..coroutines

^KT-61259

native/native.tests/testData/codegen/boxing/boxing4.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+package codegen.boxing.boxing4
+
+import kotlin.test.*
+
+fun printInt(x: Int) = println(x)
+
+fun foo(arg: Any?) {
+    if (arg is Int? && arg != null)
+        printInt(arg)
+}
+
+@Test fun runTest() {
+    foo(16)
+    val nonConst = 16
+    foo(nonConst)
+}