[K/N][Tests] Adjust moved codegen tests to new infra

^KT-61259

native/native.tests/testData/codegen/escapeAnalysis/test13.kt

@@ -2,8 +2,7 @@
  * Copyright 2010-2020 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.escapeAnalysis.test13
+import kotlin.test.*
 
 class A {
     var f: A? = null
@@ -13,8 +12,10 @@ fun foo(a: A, k: Int): A {
     return if (k == 0) a else foo(a.f!!, k - 1)
 }
 
-fun main() {
+fun box(): String {
     val a = A()
-    a.f = A()
-    println(foo(a, 1))
+    val a2 = A()
+    a.f = a2
+    assertEquals(a2, foo(a, 1))
+    return "OK"
 }