[K/N][tests] Move some more native tests to new testing infra

^KT-61259

native/native.tests/testData/codegen/initializers/initializers3.kt

@@ -0,0 +1,16 @@
+/*
+ * 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 runtime.basic.initializers3
+
+import kotlin.test.*
+
+class Foo(val bar: Int)
+
+var x = Foo(42)
+
+@Test fun runTest() {
+    println(x.bar)
+}