[K/N][tests] Adjust moved tests to new testing infra

^KT-61259

native/native.tests/testData/codegen/initializers/initializers2.kt

@@ -3,9 +3,13 @@
  * that can be found in the LICENSE file.
  */
 
+import kotlin.test.*
+
+val sb = StringBuilder()
+
 class A(val msg: String) {
     init {
-        println("init $msg")
+        sb.appendLine("init $msg")
     }
     override fun toString(): String = msg
 }
@@ -14,9 +18,19 @@ val globalValue1 = 1
 val globalValue2 = A("globalValue2")
 val globalValue3 = A("globalValue3")
 
-fun main(args: Array<String>) {
-    println(globalValue1.toString())
-    println(globalValue2.toString())
-    println(globalValue3.toString())
+fun box(): String {
+    sb.appendLine(globalValue1.toString())
+    sb.appendLine(globalValue2.toString())
+    sb.appendLine(globalValue3.toString())
+
+    assertEquals("""
+        init globalValue2
+        init globalValue3
+        1
+        globalValue2
+        globalValue3
+
+    """.trimIndent(), sb.toString())
+    return "OK"
 }