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/*
* Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.serialization
import kotlinx.serialization.builtins.*
import kotlinx.serialization.descriptors.*
import kotlinx.serialization.encoding.*
import kotlinx.serialization.test.*
import kotlin.test.*
class SerialDescriptorBuilderTest {
@Serializable
@SerialName("Wrapper")
class Wrapper(val i: Int)
private val wrapperDescriptor = buildClassSerialDescriptor("Wrapper") {
element("i", Int.serializer().descriptor)
}
private val dataHolderDescriptor = buildClassSerialDescriptor("DataHolder") {
element<String>("string")
element("nullableWrapper", wrapperDescriptor.nullable)
element("wrapper", wrapperDescriptor)
element<Int>("int")
element<Long?>("nullableOptionalLong", isOptional = true)
}
@Serializable
@SerialName("DataHolder")
class DataHolder(
val string: String,
val nullableWrapper: Wrapper?,
val wrapper: Wrapper,
val int: Int,
val nullableOptionalLong: Long? = null
)
@Test
fun testTrivialDescriptor() {
Wrapper.serializer().descriptor.assertDescriptorEqualsTo(wrapperDescriptor)
}
@Test
fun testNestedDescriptors() {
DataHolder.serializer().descriptor.assertDescriptorEqualsTo(dataHolderDescriptor)
}
@Serializable
@SerialName("Box")
class Box<T>(val value: T, val list: List<T>)
class CustomBoxSerializer<T>(val typeSerializer: KSerializer<T>) {
val descriptor: SerialDescriptor = buildClassSerialDescriptor("Box") {
element("value", typeSerializer.descriptor)
element("list", listSerialDescriptor(typeSerializer.descriptor))
}
}
@Test
fun testGenericDescriptor() {
val original = Box.serializer(Wrapper.serializer()).descriptor
val userDefined = CustomBoxSerializer(object : KSerializer<Wrapper> {
override val descriptor: SerialDescriptor = wrapperDescriptor
override fun serialize(encoder: Encoder, value: Wrapper) = TODO()
override fun deserialize(decoder: Decoder): Wrapper = TODO()
}).descriptor
original.assertDescriptorEqualsTo(userDefined)
}
@Test
fun testMisconfiguration() {
assertFailsWith<IllegalArgumentException> {
buildClassSerialDescriptor("a") {
element<Int>("i")
element<Int>("i")
}
}
assertFailsWith<IllegalArgumentException> { buildClassSerialDescriptor("") }
assertFailsWith<IllegalArgumentException> { buildClassSerialDescriptor("\t") }
assertFailsWith<IllegalArgumentException> { buildClassSerialDescriptor(" ") }
assertFailsWith<IllegalArgumentException> { PrimitiveSerialDescriptor("", PrimitiveKind.STRING) }
assertFailsWith<IllegalArgumentException> { PrimitiveSerialDescriptor(" ", PrimitiveKind.STRING) }
assertFailsWith<IllegalArgumentException> { PrimitiveSerialDescriptor("\t", PrimitiveKind.STRING) }
}
}
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