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

^KT-61259

native/native.tests/testData/codegen/function/defaults3.kt

@@ -3,14 +3,10 @@
  * that can be found in the LICENSE file.
  */
 
-package codegen.function.defaults3
-
-import kotlin.test.*
-
 fun foo(a:Int = 2, b:String = "Hello", c:Int = 4):String = "$b-$c$a"
 fun foo(a:Int = 3, b:Int = a + 1, c:Int = a + b) = a + b + c
 
-@Test fun runTest() {
+fun box(): String {
     val a = foo(b="Universe")
     if (a != "Universe-42")
         throw Error()
@@ -18,4 +14,6 @@ fun foo(a:Int = 3, b:Int = a + 1, c:Int = a + b) = a + b + c
     val b = foo(b = 5)
     if (b != (/* a = */ 3 + /* b = */ 5 + /* c = */ (3 + 5)))
         throw Error()
+
+    return "OK"
 }