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package kotlinx.serialization.features
import kotlinx.serialization.*
import kotlinx.serialization.internal.HexConverter
import kotlinx.serialization.internal.SerialClassDescImpl
import kotlinx.serialization.json.Json
import kotlin.test.Test
import kotlin.test.assertEquals
class BinaryPayloadExampleTest {
@Serializable
class BinaryPayload(val req: ByteArray, val res: ByteArray) {
@Serializer(forClass = BinaryPayload::class)
companion object : KSerializer<BinaryPayload> {
override val descriptor: SerialDescriptor = object : SerialClassDescImpl("BinaryPayload") {
init {
addElement("req")
addElement("res")
}
}
override fun serialize(encoder: Encoder, obj: BinaryPayload) {
val compositeOutput = encoder.beginStructure(descriptor)
compositeOutput.encodeStringElement(descriptor, 0, HexConverter.printHexBinary(obj.req))
compositeOutput.encodeStringElement(descriptor, 1, HexConverter.printHexBinary(obj.res))
compositeOutput.endStructure(descriptor)
}
override fun deserialize(decoder: Decoder): BinaryPayload {
val inp = decoder.beginStructure(descriptor)
lateinit var req: ByteArray
lateinit var res: ByteArray
loop@ while (true) {
when (val i = inp.decodeElementIndex(descriptor)) {
CompositeDecoder.READ_DONE -> break@loop
0 -> req = HexConverter.parseHexBinary(inp.decodeStringElement(descriptor, i))
1 -> res = HexConverter.parseHexBinary(inp.decodeStringElement(descriptor, i))
else -> throw SerializationException("Unknown index $i")
}
}
inp.endStructure(descriptor)
return BinaryPayload(req, res)
}
}
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other == null || this::class != other::class) return false
other as BinaryPayload
if (!req.contentEquals(other.req)) return false
if (!res.contentEquals(other.res)) return false
return true
}
override fun hashCode(): Int {
var result = req.contentHashCode()
result = 31 * result + res.contentHashCode()
return result
}
}
@Test
fun payloadEquivalence() {
val payload1 = BinaryPayload(byteArrayOf(0, 0, 0), byteArrayOf(127, 127))
val s = Json.stringify(BinaryPayload.serializer(), payload1)
val payload2 = Json.parse(BinaryPayload.serializer(), s)
assertEquals(payload1, payload2)
}
}
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