[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/lateinit/innerIsInitialized.kt

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+// WITH_STDLIB
+
+import kotlin.test.*
+
+open class Foo {
+    lateinit var bar: String
+
+    fun test(): String {
+        return InnerSubclass().testInner()
+    }
+
+    inner class InnerSubclass : Foo() {
+        fun testInner(): String {
+            // This is access to InnerSubclass.bar which is inherited from Foo.bar
+            if (this::bar.isInitialized) return "Fail"
+            return "OK"
+        }
+    }
+}
+
+fun box(): String {
+    return Foo().test()
+}