Jinseong Jeon
53 lines
1.8 KiB
Kotlin
Vendored
53 lines
1.8 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM
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// WITH_REFLECT
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import kotlin.reflect.KClass
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import kotlin.reflect.full.primaryConstructor
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import kotlin.test.assertEquals
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import kotlin.test.assertFails
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annotation class NoParams
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annotation class OneDefault(val s: String = "OK")
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annotation class OneNonDefault(val s: String)
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annotation class TwoParamsOneDefault(val s: String, val x: Int = 42)
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annotation class TwoParamsOneDefaultKClass(val string: String, val klass: KClass<*> = Number::class)
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annotation class TwoNonDefaults(val string: String, val klass: KClass<*>)
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inline fun <reified T : Annotation> create(args: Map<String, Any?>): T {
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val ctor = T::class.constructors.single()
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return ctor.callBy(args.mapKeys { entry -> ctor.parameters.single { it.name == entry.key } })
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}
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inline fun <reified T : Annotation> create(): T = create(emptyMap())
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fun box(): String {
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create<NoParams>()
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val t1 = create<OneDefault>()
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assertEquals("OK", t1.s)
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assertFails { create<OneDefault>(mapOf("s" to 42)) }
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val t2 = create<OneNonDefault>(mapOf("s" to "OK"))
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assertEquals("OK", t2.s)
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assertFails { create<OneNonDefault>() }
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val t3 = create<TwoParamsOneDefault>(mapOf("s" to "OK"))
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assertEquals("OK", t3.s)
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assertEquals(42, t3.x)
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val t4 = create<TwoParamsOneDefault>(mapOf("s" to "OK", "x" to 239))
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assertEquals(239, t4.x)
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assertFails { create<TwoParamsOneDefault>(mapOf("s" to "Fail", "x" to "Fail")) }
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val t5 = create<TwoParamsOneDefaultKClass>(mapOf("string" to "OK"))
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assertEquals(Number::class, t5.klass)
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assertFails("KClass (not Class) instances should be passed as arguments") {
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create<TwoNonDefaults>(mapOf("klass" to String::class.java, "string" to "Fail"))
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}
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val t6 = create<TwoNonDefaults>(mapOf("klass" to String::class, "string" to "OK"))
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return t6.string
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}
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