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

^KT-65979

compiler/testData/codegen/box/objectExpression/expr2.kt

@@ -0,0 +1,23 @@
+/*
+ * 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.*
+
+fun box(): String {
+    val a = "OK"
+
+    val x = object {
+        override fun toString(): String {
+            return foo {
+                a
+            }
+        }
+
+        fun foo(lambda: () -> String) = lambda()
+    }
+
+    return x.toString()
+}