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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.*
import kotlinx.serialization.json.Json
import kotlinx.serialization.test.*
import kotlin.test.Test
import kotlin.test.assertEquals
class BinaryPayloadExampleTest {
@Serializable(BinaryPayload.Companion::class)
class BinaryPayload(val req: ByteArray, val res: ByteArray) {
companion object : KSerializer<BinaryPayload> {
override val descriptor: SerialDescriptor = buildClassSerialDescriptor("BinaryPayload") {
element("req", ByteArraySerializer().descriptor)
element("res", ByteArraySerializer().descriptor)
}
override fun serialize(encoder: Encoder, value: BinaryPayload) {
val compositeOutput = encoder.beginStructure(descriptor)
compositeOutput.encodeStringElement(descriptor, 0, InternalHexConverter.printHexBinary(value.req))
compositeOutput.encodeStringElement(descriptor, 1, InternalHexConverter.printHexBinary(value.res))
compositeOutput.endStructure(descriptor)
}
override fun deserialize(decoder: Decoder): BinaryPayload {
val dec: CompositeDecoder = decoder.beginStructure(descriptor)
var req: ByteArray? = null // consider using flags or bit mask if you
var res: ByteArray? = null // need to read nullable non-optional properties
loop@ while (true) {
when (val i = dec.decodeElementIndex(descriptor)) {
CompositeDecoder.DECODE_DONE -> break@loop
0 -> req = InternalHexConverter.parseHexBinary(dec.decodeStringElement(descriptor, i))
1 -> res = InternalHexConverter.parseHexBinary(dec.decodeStringElement(descriptor, i))
else -> throw SerializationException("Unknown index $i")
}
}
dec.endStructure(descriptor)
return BinaryPayload(
req ?: throw SerializationException("MFE: req"),
res ?: throw SerializationException("MFE: 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.encodeToString(BinaryPayload.serializer(), payload1)
assertEquals("""{"req":"000000","res":"7F7F"}""", s)
val payload2 = Json.decodeFromString(BinaryPayload.serializer(), s)
assertEquals(payload1, payload2)
}
}
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