1 /* 2 * Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. 3 */ 4 5 package kotlinx.serialization.features 6 7 import kotlinx.serialization.* 8 import kotlinx.serialization.EncodeDefault.Mode.* 9 import kotlinx.serialization.json.* 10 import kotlin.test.* 11 12 class SkipDefaultsTest { <lambda>null13 private val jsonDropDefaults = Json { encodeDefaults = false } <lambda>null14 private val jsonEncodeDefaults = Json { encodeDefaults = true } 15 16 @Serializable 17 data class Data(val bar: String, val foo: Int = 42) { 18 var list: List<Int> = emptyList() 19 val listWithSomething: List<Int> = listOf(1, 2, 3) 20 } 21 22 @Serializable 23 data class DifferentModes( 24 val a: String = "a", 25 @EncodeDefault val b: String = "b", 26 @EncodeDefault(ALWAYS) val c: String = "c", 27 @EncodeDefault(NEVER) val d: String = "d" 28 ) 29 30 @Test serializeCorrectlyDefaultsnull31 fun serializeCorrectlyDefaults() { 32 val d = Data("bar") 33 assertEquals( 34 """{"bar":"bar","foo":42,"list":[],"listWithSomething":[1,2,3]}""", 35 jsonEncodeDefaults.encodeToString(Data.serializer(), d) 36 ) 37 } 38 39 @Test serializeCorrectlynull40 fun serializeCorrectly() { 41 val d = Data("bar", 100).apply { list = listOf(1, 2, 3) } 42 assertEquals( 43 """{"bar":"bar","foo":100,"list":[1,2,3]}""", 44 jsonDropDefaults.encodeToString(Data.serializer(), d) 45 ) 46 } 47 48 @Test serializeCorrectlyAndDropBodynull49 fun serializeCorrectlyAndDropBody() { 50 val d = Data("bar", 43) 51 assertEquals("""{"bar":"bar","foo":43}""", jsonDropDefaults.encodeToString(Data.serializer(), d)) 52 } 53 54 @Test serializeCorrectlyAndDropAllnull55 fun serializeCorrectlyAndDropAll() { 56 val d = Data("bar") 57 assertEquals("""{"bar":"bar"}""", jsonDropDefaults.encodeToString(Data.serializer(), d)) 58 } 59 60 @Test encodeDefaultsAnnotationWithFlagnull61 fun encodeDefaultsAnnotationWithFlag() { 62 val data = DifferentModes() 63 assertEquals("""{"a":"a","b":"b","c":"c"}""", jsonEncodeDefaults.encodeToString(data)) 64 assertEquals("""{"b":"b","c":"c"}""", jsonDropDefaults.encodeToString(data)) 65 } 66 67 } 68