Dmitry Petrov
6cb0e5151c
Intrinsics for is/as/as? with mutable Kotlin collections and related types.
32 lines
926 B
Kotlin
Vendored
32 lines
926 B
Kotlin
Vendored
class MyMap<K, V>: Map<K, V> {
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override fun size(): Int = 0
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override fun isEmpty(): Boolean = true
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override fun containsKey(key: Any?): Boolean = false
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override fun containsValue(value: Any?): Boolean = false
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override fun get(key: Any?): V? = null
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override fun keySet(): Set<K> = throw UnsupportedOperationException()
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override fun values(): Collection<V> = throw UnsupportedOperationException()
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override fun entrySet(): Set<Map.Entry<K, V>> = throw UnsupportedOperationException()
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}
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fun expectUoe(block: () -> Unit) {
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try {
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block()
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throw AssertionError()
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} catch (e: UnsupportedOperationException) {
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}
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}
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fun box(): String {
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val myMap = MyMap<String, Int>()
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val map = myMap as java.util.Map<String, Int>
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expectUoe { map.put("", 1) }
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expectUoe { map.remove("") }
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expectUoe { map.putAll(myMap) }
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expectUoe { map.clear() }
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return "OK"
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}
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