Move blackBoxFile() testData to box/ directory

Delete all test methods (and empty test classes), since they'll be
auto-generated

compiler/testData/codegen/classes/classObject.kt

@@ -1,11 +0,0 @@
-class C() {
-  class object {
-    fun create() = C()
-  }
-}
-
-fun box(): String {
-  val c = C.create()
-  return if (c is C) "OK" else "fail"
-}
-

compiler/testData/codegen/classes/classObjectField.kt

@@ -1,7 +0,0 @@
-class A() {
-    class object {
-        val value = 10
-    }
-}
-
-fun box() = if (A.value == 10) "OK" else "Fail ${A.value}"

compiler/testData/codegen/classes/classObjectInTrait.kt

@@ -1,12 +0,0 @@
-// EA-38323 - Illegal field modifiers in class: classObject field in C must be static and final 
-
-trait C {
-  class object {
-    public val FOO: String = "OK"
-  }
-}
-
-fun box(): String {
-  return C.FOO
-}
-

compiler/testData/codegen/classes/closureWithParameter.kt

@@ -1,7 +0,0 @@
-fun box() : String {
-    return apply( "OK", {(arg: String) -> arg } )
-}
-
-fun apply(arg : String, f :  (p:String) -> String) : String {
-    return f(arg)
-}

compiler/testData/codegen/classes/closureWithParameterAndBoxing.kt

@@ -1,7 +0,0 @@
-fun box() : String {
-    return if (apply( 5, {(arg: Int) -> arg + 13 } ) == 18) "OK" else "fail"
-}
-
-fun apply(arg : Int, f :  (p:Int) -> Int) : Int {
-    return f(arg)
-}

compiler/testData/codegen/classes/delegation2.kt

@@ -1,24 +0,0 @@
-trait Trait1 {
-    fun foo() : String
-}
-
-trait Trait2  {
-    fun bar() : String
-}
-
-class T1 : Trait1{
-    override fun foo() = "aaa"
-}
-
-class T2 : Trait2{
-    override fun bar()  = "bbb"
-}
-
-class C(a:Trait1, b:Trait2) : Trait1 by a, Trait2 by b
-
-fun box() : String {
-    val c = C(T1(),T2())
-    if(c.foo() != "aaa") return "fail"
-    if(c.bar() != "bbb") return "fail"
-    return "OK"
-}

compiler/testData/codegen/classes/delegation3.kt

@@ -1,35 +0,0 @@
-trait One {
-  public open fun foo() : Int
-  public open fun faz() : Int = 10
-}
-trait Two {
-  public open fun foo() : Int
-  public open fun quux() : Int = 100
-}
-
-class OneImpl : One {
-  public override fun foo() = 1
-}
-class TwoImpl : Two {
-  public override fun foo() = 2
-}
-
-class Test2(a : One, b : Two) : Two by b, One by a {
-  public override fun foo() = 0
-}
-
-fun box() : String {
-    var t2 = Test2(OneImpl(), TwoImpl())
-    if (t2.foo() != 0)
-        return "Fail #1"
-    if (t2.faz() != 10)
-        return "Fail #2"
-    if (t2.quux() != 100)
-        return "Fail #3"
-    if (t2 !is One)
-        return "Fail #4"
-    if (t2 !is Two)
-        return "Fail #5"
-
-    return "OK"
-}

compiler/testData/codegen/classes/delegation4.kt

@@ -1,28 +0,0 @@
-open trait First {
-  public open fun foo() : Int
-}
-
-open trait Second : First {
-  public open fun bar() : Int
-}
-
-class Impl : Second {
-  public override fun foo() = 1
-  public override fun bar() = 2
-}
-
-class Test(s : Second) : Second by s {}
-
-fun box() : String {
-    var t = Test(Impl())
-    if (t.foo() != 1)
-        return "Fail #1"
-    if (t.bar() != 2)
-        return "Fail #2"
-    if (t !is First)
-        return "Fail #3"
-    if (t !is Second)
-        return "Fail #4"
-
-    return "OK"
-}

compiler/testData/codegen/classes/delegationGenericArg.kt

@@ -1,12 +0,0 @@
-trait A<T> {
-    fun foo(t: T): String
-}
-
-class Derived(a: A<Int>) : A<Int> by a
-
-fun box(): String {
-    val o = object : A<Int> {
-        override fun foo(t: Int) = if (t == 42) "OK" else "Fail $t"
-    }
-    return Derived(o).foo(42)
-}

compiler/testData/codegen/classes/delegationGenericArgUpperBound.kt

@@ -1,12 +0,0 @@
-trait A<T: Number> {
-    fun foo(t: T): String
-}
-
-class Derived(a: A<Int>) : A<Int> by a
-
-fun box(): String {
-    val o = object : A<Int> {
-        override fun foo(t: Int) = if (t == 42) "OK" else "Fail $t"
-    }
-    return Derived(o).foo(42)
-}

compiler/testData/codegen/classes/delegationGenericLongArg.kt

@@ -1,12 +0,0 @@
-trait A<T, U> {
-    fun foo(t: T, u: U): String
-}
-
-class Derived(a: A<Long, Int>) : A<Long, Int> by a
-
-fun box(): String {
-    val o = object : A<Long, Int> {
-        override fun foo(t: Long, u: Int) = if (t == u.toLong()) "OK" else "Fail $t $u"
-    }
-    return Derived(o).foo(42, 42)
-}

compiler/testData/codegen/classes/delegationJava.kt

@@ -1,13 +0,0 @@
-class TestJava(r : Runnable) : Runnable by r {}
-class TestRunnable() : Runnable {
-  public override fun run() = System.out.println("foobar")
-}
-
-fun box() : String {
-    var del = TestJava(TestRunnable())
-    del.run()
-    if (del !is Runnable)
-        return "Fail #1"
-
-    return "OK"
-}

compiler/testData/codegen/classes/delegationMethodsWithArgs.kt

@@ -1,34 +0,0 @@
-package test
-
-trait TextField {
-    fun getText(): String
-}
-
-trait InputTextField : TextField {
-    fun setText(text: String)
-}
-
-trait MooableTextField : InputTextField {
-    fun moo(a: Int, b: Int, c: Int): Int
-}
-
-class SimpleTextField : MooableTextField {
-    private var text = ""
-    override fun getText() = text
-    override fun setText(text: String) {
-        this.text = text
-    }
-    override fun moo(a: Int, b: Int, c: Int) = a + b + c
-}
-
-class TextFieldWrapper(textField: MooableTextField) : MooableTextField by textField
-
-fun box() : String {
-    val textField = TextFieldWrapper(SimpleTextField())
-    textField.setText("hello world!")
-
-    if (!textField.getText().equals("hello world!")) return "FAIL #!1"
-    if (textField.moo(1,2,3) != 6) return "FAIL #2"
-
-    return "OK"
-}

compiler/testData/codegen/classes/diamondInheritance.kt

@@ -1,24 +0,0 @@
-// Changed when traits were introduced. May not make sense any more
-
-open class Base() {
-    public var v : Int = 0
-}
-
-open class Left() : Base() {}
-trait Right : Base {}
-
-class D() : Left(), Right
-
-fun vl(l : Left) : Int = l.v
-fun vr(r : Right) : Int = r.v
-
-fun box() : String {
-    val d = D()
-    d.v = 42
-
-    if (d.v != 42) return "Fail #1"
-    if (vl(d) != 42) return "Fail #2"
-    if (vr(d) != 42) return "Fail #3"
-
-    return "OK"
-}

compiler/testData/codegen/classes/doubleEnclosedLocalVariable.kt

@@ -1,8 +0,0 @@
-fun box() : String {
-    val cl = 39
-    return if (sum(200, { val ff = {cl}; ff() }) == 239) "OK" else "FAIL"
-}
-
-fun sum(arg:Int, f :  () -> Int) : Int {
-    return arg + f()
-}

compiler/testData/codegen/classes/enclosingLocalVariable.kt

@@ -1,8 +0,0 @@
-fun box() : String {
-    val cl = 39
-    return if (sum(200, { val m = { val r = { cl };  r() }; m() }) == 239) "OK" else "FAIL"
-}
-
-fun sum(arg:Int, f :  () -> Int) : Int {
-    return arg + f()
-}

compiler/testData/codegen/classes/enclosingThis.kt

@@ -1,12 +0,0 @@
-class Point(val x:Int, val y:Int) {
-    fun mul() :  (scalar:Int)->Point  {
-        return { (scalar:Int):Point -> Point(x * scalar, y * scalar) }
-    }
-}
-
-val m = Point(2, 3).mul() :  (scalar:Int)->Point
-
-fun box() : String {
-    val answer = m(5)
-    return if (answer.x == 10 && answer.y == 15) "OK" else "FAIL"
-}

compiler/testData/codegen/classes/exceptionConstructor.kt

@@ -1,7 +0,0 @@
-class GameError(msg: String): Exception(msg) {
-}
-
-fun box(): String {
-  val e = GameError("foo")
-  return if (e.getMessage() == "foo") "OK" else "fail"
-}

compiler/testData/codegen/classes/extensionClosure.kt

@@ -1,13 +0,0 @@
-class Point(val x : Int, val y : Int)
-
-fun box() : String {
-    val answer = apply(Point(3, 5), { Point.(scalar : Int) : Point ->
-        Point(x * scalar, y * scalar)
-    })
-
-    return if (answer.x == 6 && answer.y == 10) "OK" else "FAIL"
-}
-
-fun apply(arg:Point, f :  Point.(scalar : Int) -> Point) : Point {
-    return arg.f(2)
-}

compiler/testData/codegen/classes/funDelegation.kt

@@ -1,17 +0,0 @@
-open class Base() {
-    fun n(n : Int) : Int = n + 1
-}
-
-trait Abstract {}
-
-class Derived1() : Base(), Abstract {}
-class Derived2() : Abstract, Base() {}
-
-fun test(s : Base) : Boolean = s.n(238) == 239
-
-fun box() : String {
-    if (!test(Base())) return "Fail #1"
-    if (!test(Derived1())) return "Fail #2"
-    if (!test(Derived2())) return "Fail #3"
-    return "OK"
-}

compiler/testData/codegen/classes/inheritance.kt

@@ -1,41 +0,0 @@
-// Changed when traits were introduced. May not make sense any more
-
-open class X(val x : Int) {}
-trait Y {
-    abstract val y : Int
-}
-
-class YImpl(override val y : Int) : Y {}
-
-class Point(x : Int, yy : Int) : X(x) , Y {
-    override val y : Int = yy
-}
-
-trait Abstract {}
-
-class P1(x : Int, yy : Y) : Abstract, X(x), Y by yy {}
-class P2(x : Int, yy : Y) : X(x), Abstract, Y by yy {}
-class P3(x : Int, yy : Y) : X(x), Y by yy, Abstract {}
-class P4(x : Int, yy : Y) : Y by yy, Abstract, X(x) {}
-
-fun box() : String {
-    if (X(239).x != 239) return "FAIL #1"
-    if (YImpl(239).y != 239) return "FAIL #2"
-
-    val p = Point(240, -1)
-    if (p.x + p.y != 239) return "FAIL #3"
-
-    val y = YImpl(-1)
-    val p1 = P1(240, y)
-    if (p1.x + p1.y != 239) return "FAIL #4"
-    val p2 = P2(240, y)
-    if (p2.x + p2.y != 239) return "FAIL #5"
-
-    val p3 = P3(240, y)
-    if (p3.x + p3.y != 239) return "FAIL #6"
-
-    val p4 = P4(240, y)
-    if (p4.x + p4.y != 239) return "FAIL #7"
-
-    return "OK"
-}

compiler/testData/codegen/classes/inheritedInnerClass.kt

@@ -1,14 +0,0 @@
-class Outer() {
-  open inner class InnerBase() {
-  }
-
-  inner class InnerDerived(): InnerBase() {
-  }
-
-  public val foo: InnerBase? = InnerDerived()
-}
-
-fun box() : String {
-  val o = Outer()
-  return if (o.foo === null) "fail" else "OK"
-}

compiler/testData/codegen/classes/inheritedMethod.kt

@@ -1,13 +0,0 @@
-open class Foo {
-  fun xyzzy(): String = "xyzzy"
-}
-
-class Bar(): Foo() {
-  fun test(): String = xyzzy()
-}
-
-fun box() : String {
-  val bar = Bar()
-  val f = bar.test()
-  return if (f == "xyzzy") "OK" else "fail"
-}

compiler/testData/codegen/classes/initializerBlock.kt

@@ -1,13 +0,0 @@
-class C() {
-  public var f: Int
-
-  {
-    $f = 610
-  }
-}
-
-fun box(): String {
-  val c = C()
-  if (c.f != 610) return "fail"
-  return "OK"
-}

compiler/testData/codegen/classes/initializerBlockDImpl.kt

@@ -1,20 +0,0 @@
-import java.util.*
-import java.io.*
-
-class World() {
-  public val items: ArrayList<Item> = ArrayList<Item>()
-
-  inner class Item() {
-    {
-      items.add(this)
-    }
-  }
-
-  val foo = Item()
-}
-
-fun box() : String {
-  val w = World()
-  if (w.items.size() != 1) return "fail"
-  return "OK"
-}

compiler/testData/codegen/classes/innerClass.kt

@@ -1,19 +0,0 @@
-class Outer(val foo: StringBuilder) {
-  inner class Inner() {
-    fun len() : Int {
-      return foo.length()
-    }
-  }
-
-  fun test() : Inner {
-    return Inner()
-  }
-}
-
-fun box() : String {
-  val sb = StringBuilder("xyzzy")
-  val o = Outer(sb)
-  val i = o.test()
-  val l = i.len()
-  return if (l != 5) "fail" else "OK"
-}

compiler/testData/codegen/classes/kt2532.kt

@@ -1,15 +0,0 @@
-package foo
-
-trait B {
-    val c: Int
-        get() = 2
-}
-
-class A(val b: B) : B by b {
-    override val c: Int = 3
-}
-
-fun box(): String {
-    val c = A(object: B {}).c
-    return if (c == 3) "OK" else "fail: $c"
-}

compiler/testData/codegen/classes/outerThis.kt

@@ -1,12 +0,0 @@
-class Outer() {
-  inner class Inner() {
-    val outer: Outer get() = this@Outer
-  }
-
-  public val x : Inner = Inner()
-}
-
-fun box() : String {
-  val o = Outer()
-  return if (o === o.x.outer) "OK" else "fail"
-}

compiler/testData/codegen/classes/overloadBinaryOperator.kt

@@ -1,25 +0,0 @@
-import java.util.*
-
-class ArrayWrapper<T>() {
-    val contents = ArrayList<T>()
-
-    fun add(item: T) {
-       contents.add(item)
-    }
-
-    fun plus(b: ArrayWrapper<T>): ArrayWrapper<T> {
-        val result = ArrayWrapper<T>()
-        result.contents.addAll(contents)
-        result.contents.addAll(b.contents)
-        return result
-    }
-}
-
-fun box(): String {
-    val v1 = ArrayWrapper<String>()
-    val v2 = ArrayWrapper<String>()
-    v1.add("foo")
-    v2.add("bar")
-    val v3 = v1 + v2
-    return if (v3.contents.size() == 2) "OK" else "fail"
-}

compiler/testData/codegen/classes/overloadPlusAssign.kt

@@ -1,26 +0,0 @@
-import java.util.*
-
-class ArrayWrapper<T>() {
-    val contents = ArrayList<T>()
-
-    fun add(item: T) {
-        contents.add(item)
-    }
-
-    fun plusAssign(rhs: ArrayWrapper<T>) {
-        contents.addAll(rhs.contents)
-    }
-
-    fun get(index: Int): T {
-        return contents.get(index)!!
-    }
-}
-
-fun box(): String {
-    var v1 = ArrayWrapper<String>()
-    val v2 = ArrayWrapper<String>()
-    v1.add("foo")
-    v2.add("bar")
-    v1 += v2
-    return if (v1.contents.size() == 2) "OK" else "fail"
-}

compiler/testData/codegen/classes/overloadPlusAssignReturn.kt

@@ -1,30 +0,0 @@
-import java.util.*
-
-class ArrayWrapper<T>() {
-    val contents = ArrayList<T>()
-
-    fun add(item: T) {
-        contents.add(item)
-    }
-
-    fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
-        val result = ArrayWrapper<T>()
-        result.contents.addAll(contents)
-        result.contents.addAll(rhs.contents)
-        return result
-    }
-
-    fun get(index: Int): T {
-        return contents.get(index)!!
-    }
-}
-
-fun box(): String {
-    var v1 = ArrayWrapper<String>()
-    val v2 = ArrayWrapper<String>()
-    v1.add("foo")
-    val v3 = v1
-    v2.add("bar")
-    v1 += v2
-    return if (v1.contents.size() == 2 && v3.contents.size() == 1) "OK" else "fail"
-}

compiler/testData/codegen/classes/overloadPlusToPlusAssign.kt

@@ -1,30 +0,0 @@
-import java.util.*
-
-class ArrayWrapper<T>() {
-    val contents = ArrayList<T>()
-
-    fun add(item: T) {
-        contents.add(item)
-    }
-
-    fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
-        val result = ArrayWrapper<T>()
-        result.contents.addAll(contents)
-        result.contents.addAll(rhs.contents)
-        return result
-    }
-
-    fun get(index: Int): T {
-        return contents.get(index)!!
-    }
-}
-
-fun box(): String {
-    var v1 = ArrayWrapper<String>()
-    val v2 = ArrayWrapper<String>()
-    v1.add("foo")
-    val v3 = v1
-    v2.add("bar")
-    v1 += v2
-    return if (v1.contents.size() == 2 && v3.contents.size() == 1) "OK" else "fail"
-}

compiler/testData/codegen/classes/overloadUnaryOperator.kt

@@ -1,28 +0,0 @@
-import java.util.*
-
-class ArrayWrapper<T>() {
-    val contents = ArrayList<T>()
-
-    fun add(item: T) {
-       contents.add(item)
-    }
-
-    fun minus(): ArrayWrapper<T> {
-        val result = ArrayWrapper<T>()
-        result.contents.addAll(contents)
-        Collections.reverse(result.contents)
-        return result
-    }
-
-    fun get(index: Int): T {
-        return contents.get(index)!!
-    }
-}
-
-fun box(): String {
-    val v1 = ArrayWrapper<String>()
-    v1.add("foo")
-    v1.add("bar")
-    val v2 = -v1
-    return if (v2[0] == "bar" && v2[1] == "foo") "OK" else "fail"
-}

compiler/testData/codegen/classes/privateOuterFunctions.kt

@@ -1,31 +0,0 @@
-class C {
-    private fun String.ext() : String = ""
-    private fun f() {}
-
-    public fun foo() : String {
-        {
-            "".ext()
-            f()
-        }.invoke()
-
-        object : Runnable {
-            public override fun run() {
-                "".ext()
-                f()
-            }
-        }.run()
-
-        Inner().innerFun()
-
-        return "OK"
-    }
-
-    private inner class Inner() {
-        fun innerFun() {
-            "".ext()
-            f()
-        }
-    }
-}
-
-fun box() = C().foo()

compiler/testData/codegen/classes/privateOuterProperty.kt

@@ -1,27 +0,0 @@
-class C{
-    private var v : Int = 0
-
-    public fun foo() : Int {
-        {
-            v = v + 1
-        }.invoke()
-
-        object : Runnable {
-            public override fun run() {
-                v = v + 1
-            }
-        }.run()
-
-        Inner().innerFun()
-
-        return v
-    }
-
-    private inner class Inner() {
-        fun innerFun() {
-            v = v + 1
-        }
-    }
-}
-
-fun box() = if (C().foo() == 3) "OK" else "NOT OK"

compiler/testData/codegen/classes/propertyDelegation.kt

@@ -1,33 +0,0 @@
-open class Base() {
-    val plain = 239
-    public val read : Int
-      get() = 239
-
-    public var readwrite : Int = 0
-      get() = $readwrite + 1
-      set(n : Int) {
-        $readwrite = n
-      }
-}
-
-trait Abstract {}
-
-class Derived1() : Base(), Abstract {}
-class Derived2() : Abstract, Base() {}
-
-fun code(s : Base) : Int {
-    if (s.plain != 239) return 1
-    if (s.read != 239) return 2
-    s.readwrite = 238
-    if (s.readwrite != 239) return 3
-    return 0
-}
-
-fun test(s : Base) : Boolean = code(s) == 0
-
-fun box() : String {
-    if (!test(Base())) return "Fail #1"
-    if (!test(Derived1())) return "Fail #2"
-    if (!test(Derived2())) return "Fail #3"
-    return "OK"
-}

compiler/testData/codegen/classes/propertyInInitializer.kt

@@ -1,16 +0,0 @@
-class Outer() {
-  val s = "xyzzy"
-
-  open inner class InnerBase(public val name: String) {
-  }
-
-  inner class InnerDerived(): InnerBase(s) {
-  }
-
-  val x = InnerDerived()
-}
-
-fun box() : String {
-  val o = Outer()
-  return if (o.x.name != "xyzzy") "fail" else "OK"
-}

compiler/testData/codegen/classes/recursiveClosure.kt

@@ -1,7 +0,0 @@
-fun foo(s: String): String {
-    fun bar(count: Int): String =
-        if (count == 0) s else bar(count - 1)
-    return bar(10)
-}
-
-fun box(): String = foo("OK")

compiler/testData/codegen/classes/resolveOrder.kt

@@ -1,75 +0,0 @@
-fun box() : String {
-    if (!B().test()) return "fail 1";
-    if (!D().test()) return "fail 2"
-    if (!F().test()) return "fail 3"
-    if (!L().test()) return "fail 4"
-    if (!H().test()) return "fail 5"
-    if (!N().test()) return "fail 6"
-    return "OK"
-}
-
-class A {
-    fun foo() = 1
-}
-
-class B {
-    fun foo() = 2
-
-    fun A.bar() = foo()
-
-    fun test() = A().bar() == 1
-}
-
-
-class C {
-    fun D.foo() = 2
-}
-
-class D {
-    fun C.foo() = 1
-
-    fun C.bar() = foo()
-
-    fun test() = C().bar() == 1
-}
-
-class E
-fun E.foo() = 2
-
-class F {
-    fun foo() = 1
-
-    fun E.bar() = foo()
-
-    fun test() = E().bar() == 1
-}
-
-class G
-fun G.foo() = 2
-
-class H {
-    fun G.foo() = 1
-
-    fun G.bar() = foo()
-
-    fun test() = G().bar() == 1
-}
-
-class K
-class L {
-    fun K.bar() = foo()
-
-    fun test() = K().bar() == 1
-}
-fun K.foo() = 1
-fun L.foo() = 2
-
-class M
-class N {
-    fun foo() = 1
-    fun M.foo() = 2
-
-    fun M.bar() = foo()
-
-    fun test() = M().bar() == 1
-}

compiler/testData/codegen/classes/rightHandOverride.kt

@@ -1,20 +0,0 @@
-// Changed when traits were introduced. May not make sense any more
-
-trait Left {}
-open class Right() {
-    open fun f() = 42
-}
-
-class D() : Left, Right() {
-    override fun f() = 239
-}
-
-fun box() : String {
-    val r : Right = Right()
-    val d : D = D()
-
-    if (r.f() != 42) return "Fail #1"
-    if (d.f() != 239) return "Fail #2"
-
-    return "OK"
-}

compiler/testData/codegen/classes/selfcreate.kt

@@ -1,10 +0,0 @@
-class B () {}
-
-open class A(val b : B) {
-    fun a() = object: A(b) {}
-}
-
-fun box() : String {
-    A(B()).a()
-    return "OK"
-}

compiler/testData/codegen/classes/simpleBox.kt

@@ -1,8 +0,0 @@
-class Box<T>(t: T) {
-    var value = t
-}
-
-fun box(): String {
-    val box: Box<Int> = Box<Int>(1)
-    return if (box.value == 1) "OK" else "fail"
-}

compiler/testData/codegen/classes/simplestClosure.kt

@@ -1,7 +0,0 @@
-fun box() : String {
-    return invoker( {"OK"} )
-}
-
-fun invoker(gen :  () -> String) : String {
-    return gen()
-}

compiler/testData/codegen/classes/simplestClosureAndBoxing.kt

@@ -1,7 +0,0 @@
-fun box() : String {
-    return if (int_invoker( { 7 } ) == 7) "OK" else "fail"
-}
-
-fun int_invoker(gen :  () -> Int) : Int {
-    return gen()
-}

compiler/testData/codegen/classes/typedDelegation.kt

@@ -1,31 +0,0 @@
-trait A<T> {
-  var zzzValue : T
-  fun zzz() : T
-}
-
-class Base<T> : A<T?> {
-  override var zzzValue : T? = null
-
-  override fun zzz() : T? = zzzValue
-}
-
-class X : A<String?> by Base<String?>()
-
-fun box() : String {
-  (Base<String?>() as A<String?>).zzz()
-
-  if (X().zzz() != null) {
-    return "Fail"
-  }
-
-  val x = X()
-  x.zzzValue = "aa"
-  if (x.zzzValue != "aa") {
-    return "Fail 2";
-  }
-  if (x.zzz() != "aa") {
-    return "Fail 3";
-  }
-
-  return "OK"
-}