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

^KT-65979

compiler/testData/codegen/box/boxing/boxing7.kt

@@ -0,0 +1,33 @@
+/*
+ * 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.
+ */
+// JVM_ABI_K1_K2_DIFF: KT-63864
+// WITH_STDLIB
+
+import kotlin.test.*
+
+val sb = StringBuilder()
+
+fun printInt(x: Int) = sb.appendLine(x)
+
+fun foo(arg: Any) {
+    val argAsInt = try {
+        arg as Int
+    } catch (e: ClassCastException) {
+        0
+    }
+    printInt(argAsInt)
+}
+
+fun box(): String {
+    foo(1)
+    foo("Hello")
+    val nonConstInt = 1
+    val nonConstString = "Hello"
+    foo(nonConstInt)
+    foo(nonConstString)
+
+    assertEquals("1\n0\n1\n0\n", sb.toString())
+    return "OK"
+}