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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.features
import kotlinx.serialization.*
import kotlinx.serialization.builtins.*
import kotlinx.serialization.descriptors.*
import kotlinx.serialization.encoding.Decoder
import kotlinx.serialization.encoding.Encoder
import kotlinx.serialization.internal.*
import kotlinx.serialization.test.EnumSerializer
import kotlin.test.*
class SchemaTest {
enum class SampleEnum { OptionA, OptionB, OptionC }
@Serializable
data class Box<T>(val boxed: T)
@Serializable(Data1.Companion::class)
data class Data1(val l: List<Int> = emptyList(), val s: String) {
companion object: KSerializer<Data1> {
override val descriptor = buildClassSerialDescriptor("Data1") {
element("l", listSerialDescriptor<Int>(), isOptional = true)
element("s", serialDescriptor<String>())
}
override fun serialize(encoder: Encoder, value: Data1) = error("Should not be called")
override fun deserialize(decoder: Decoder): Data1 = error("Should not be called")
}
}
@Serializable
data class Data2(val l: List<Int> = emptyList(), val s: String)
@Serializable data class BoxHolder(val stringBox: Box<String>, val intBox: Box<Int>)
@Serializable
data class DataZoo(
@Transient val invisible: String = "",
val a: Int,
val b: String,
val c: List<Data1>,
val ll: List<List<Boolean>>,
val m: Map<String, Data2>?
)
@Serializable
data class DataZooIsomorphic(
@Transient val invisible: String = "",
val b: Int,
val a: String,
val cc: List<Data1>,
val lll: List<List<Boolean>>,
val mm: Map<String, Data2>? = null
)
@Serializable
private data class DataWithEnum(val s: String, val enum: SampleEnum, val enumList: List<SampleEnum> = emptyList())
private fun checkDescriptor(serialDescriptor: SerialDescriptor) {
val nested = serialDescriptor.getElementDescriptor(0)
assertTrue(nested is ListLikeDescriptor)
val elem = nested.getElementDescriptor(0)
assertTrue(elem.kind is PrimitiveKind.INT)
assertEquals("kotlin.Int", elem.serialName)
assertTrue(serialDescriptor.isElementOptional(0))
}
@Test
fun testManualSchema() {
checkDescriptor(Data1.serializer().descriptor)
}
@Test
fun testGeneratedSchema() {
checkDescriptor(Data2.serializer().descriptor)
}
@Test
fun testRichSchema() {
val d: SerialDescriptor = DataZoo.serializer().descriptor
val descs = d.elementDescriptors.toList()
assertEquals(5, descs.size)
assertEquals(listOf(PrimitiveKind.INT, PrimitiveKind.STRING, StructureKind.LIST),
descs.take(3).map { it.kind })
val listListDesc = descs[3]
assertFalse(listListDesc.isNullable)
assertEquals(listListDesc.kind, StructureKind.LIST)
assertEquals(1, listListDesc.elementsCount)
assertEquals(PrimitiveKind.BOOLEAN, listListDesc.elementDescriptors.first().elementDescriptors.first().kind)
val mapDesc = descs[4]
assertTrue(mapDesc.isNullable)
assertFalse(d.isElementOptional(4), "Expected value to be marked as optional")
assertEquals(2, mapDesc.elementsCount)
assertEquals(listOf(PrimitiveKind.STRING, StructureKind.CLASS), mapDesc.kinds())
}
@Test
fun testEqualDescriptors() {
val desc1: SerialDescriptor = DataZoo.serializer().descriptor
val desc2: SerialDescriptor = DataZooIsomorphic.serializer().descriptor
assertEquals(desc1.elementDescriptors.toList(), desc2.elementDescriptors.toList())
assertEquals(Int.serializer().descriptor.elementDescriptors.toList(), Int.serializer().descriptor.elementDescriptors.toList())
}
@Test
fun testGenericDescriptors() {
val boxes = BoxHolder.serializer().descriptor.elementDescriptors.toList()
assertTrue(boxes[0].getElementDescriptor(0).kind is PrimitiveKind.STRING)
assertTrue(boxes[1].getElementDescriptor(0).kind is PrimitiveKind.INT)
assertNotEquals(boxes[0], boxes[1])
val intBox = Box.serializer(Int.serializer()).descriptor
assertEquals(intBox.kind, boxes[1].kind)
}
@Test
fun testEnumDescriptors() {
val dataDescriptor = DataWithEnum.serializer().descriptor
val enumDesc = dataDescriptor.getElementDescriptor(1)
val serialName = "kotlinx.serialization.features.SchemaTest.SampleEnum"
val manualSerializer = EnumSerializer<SampleEnum>(serialName)
assertEquals(enumDesc, manualSerializer.descriptor)
assertEquals(enumDesc, dataDescriptor.getElementDescriptor(2).getElementDescriptor(0))
}
@Test
fun testKindNames() {
val classDesc = BoxHolder.serializer().descriptor
assertEquals("CLASS", classDesc.kind.toString())
val intDesc = classDesc.elementDescriptors.toList()[1].elementDescriptors.toList()[0]
assertEquals("INT", intDesc.kind.toString())
}
private fun SerialDescriptor.kinds(): List<SerialKind> {
return List(elementsCount) { getElementDescriptor(it).kind }
}
}
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