Vladimir Sukharev
31 lines
688 B
Kotlin
Vendored
31 lines
688 B
Kotlin
Vendored
/*
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* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
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* that can be found in the LICENSE file.
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*/
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// WITH_STDLIB
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import kotlin.test.*
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open class A
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class B : A()
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class C
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fun foo(a: Any) : A? = a as? A
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fun safe_cast_positive(): Boolean {
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val b = B()
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return foo(b) === b
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}
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fun safe_cast_negative(): Boolean {
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val c = C()
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return foo(c) == null
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}
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fun box(): String {
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val safeCastPositive = safe_cast_positive().toString()
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val safeCastNegative = safe_cast_negative().toString()
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if (safeCastPositive != "true") return "FAIL safeCastPositive"
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if (safeCastNegative != "true") return "FAIL safeCastNegative"
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return "OK"
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} |