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