Svyatoslav Scherbina
48 lines
952 B
Kotlin
48 lines
952 B
Kotlin
fun main(args: Array<String>) {
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testCast(null, false)
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testCastToNullable(null, true)
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testCastToNullable(Test(), true)
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testCastToNullable("", false)
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testCastNotNullableToNullable(Test(), true)
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testCastNotNullableToNullable("", false)
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println("Ok")
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}
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class Test
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fun ensure(b: Boolean) {
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if (!b) {
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println("Error")
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}
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}
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fun testCast(x: Any?, expectSuccess: Boolean) {
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try {
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x as Test
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} catch (e: Throwable) {
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ensure(!expectSuccess)
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return
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}
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ensure(expectSuccess)
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}
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fun testCastToNullable(x: Any?, expectSuccess: Boolean) {
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try {
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x as Test?
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} catch (e: Throwable) {
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ensure(!expectSuccess)
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return
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}
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ensure(expectSuccess)
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}
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fun testCastNotNullableToNullable(x: Any, expectSuccess: Boolean) {
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try {
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x as Test?
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} catch (e: Throwable) {
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ensure(!expectSuccess)
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return
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}
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ensure(expectSuccess)
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} |