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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.json.internal.*
import kotlinx.serialization.*
import kotlin.test.*
class DynamicToLongTest {
@Serializable
data class HasLong(val l: Long)
private fun test(dynamic: dynamic, expectedResult: Result<Long>) {
val parsed = kotlin.runCatching { Json.decodeFromDynamic(HasLong.serializer(), dynamic).l }
assertEquals(expectedResult.isSuccess, parsed.isSuccess, "Results are different")
parsed.onSuccess { assertEquals(expectedResult.getOrThrow(), it) }
// to compare without message
parsed.onFailure { assertSame(expectedResult.exceptionOrNull()!!::class, it::class) }
}
private fun shouldFail(dynamic: dynamic) = test(dynamic, Result.failure(SerializationException("")))
@Test
fun canParseNotSoBigLongs() {
test(js("{l:1}"), Result.success(1))
test(js("{l:0}"), Result.success(0))
test(js("{l:-1}"), Result.success(-1))
}
@Test
fun ignoresIncorrectValues() {
shouldFail(js("{l:0.5}"))
shouldFail(js("{l: Math.PI}"))
shouldFail(js("{l: NaN}"))
shouldFail(js("""{l: "a string"}"""))
shouldFail(js("{l:Infinity}"))
shouldFail(js("{l:+Infinity}"))
shouldFail(js("{l:-Infinity}"))
}
@Test
fun handlesEdgyValues() {
test(js("{l:Number.MAX_SAFE_INTEGER}"), Result.success(MAX_SAFE_INTEGER.toLong()))
test(js("{l:Number.MAX_SAFE_INTEGER - 1}"), Result.success(MAX_SAFE_INTEGER.toLong() - 1))
test(js("{l:-Number.MAX_SAFE_INTEGER}"), Result.success(-MAX_SAFE_INTEGER.toLong()))
shouldFail(js("{l: Number.MAX_SAFE_INTEGER + 1}"))
shouldFail(js("{l: Number.MAX_SAFE_INTEGER + 2}"))
shouldFail(js("{l: -Number.MAX_SAFE_INTEGER - 1}"))
shouldFail(js("{l: 2e100}"))
shouldFail(js("{l: 2e100 + 1}"))
test(js("{l: Math.pow(2, 53) - 1}"), Result.success(MAX_SAFE_INTEGER.toLong()))
}
}
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