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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.json
import kotlinx.serialization.*
import kotlinx.serialization.json.internal.*
import kotlinx.serialization.test.*
import kotlin.test.*
class SpecialFloatingPointValuesTest : JsonTestBase() {
@Serializable
data class Box(val d: Double, val f: Float) {
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other == null || this::class != other::class) return false
other as Box
if (d != other.d && !(d.isNaN() && other.d.isNaN())) return false
if (f != other.f && !(f.isNaN() && other.f.isNaN())) return false
return true
}
override fun hashCode(): Int {
var result = d.hashCode()
result = 31 * result + f.hashCode()
return result
}
}
val json = Json { allowSpecialFloatingPointValues = true }
@Test
fun testNans() = parametrizedTest {
test(Box(Double.NaN, Float.NaN), """{"d":NaN,"f":NaN}""", it)
noJs { // Number formatting
test(Box(0.0, Float.NaN), """{"d":0.0,"f":NaN}""", it)
test(Box(Double.NaN, 0.0f), """{"d":NaN,"f":0.0}""", it)
}
}
@Test
fun testInfinities() = parametrizedTest {
test(Box(Double.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY), """{"d":-Infinity,"f":Infinity}""", it)
test(Box(Double.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY), """{"d":Infinity,"f":-Infinity}""", it)
}
private fun test(box: Box, expected: String, jsonTestingMode: JsonTestingMode) {
val e1 = assertFailsWith<JsonException> { default.encodeToString(Box.serializer(), box, jsonTestingMode) }
assertTrue { e1.message!!.contains("Unexpected special floating-point value") }
assertEquals(expected, json.encodeToString(Box.serializer(), box, jsonTestingMode))
assertEquals(box, json.decodeFromString(Box.serializer(), expected, jsonTestingMode))
val e2 = assertFailsWith<JsonException> { default.decodeFromString(Box.serializer(), expected, jsonTestingMode) }
assertTrue { e2.message!!.contains("Unexpected special floating-point value") }
}
}
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