1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Copyright 2017-2022 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
@file:Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
package kotlinx.serialization.features
import kotlinx.serialization.*
import kotlinx.serialization.builtins.serializer
import kotlinx.serialization.json.*
import kotlinx.serialization.json.internal.BATCH_SIZE
import kotlinx.serialization.modules.*
import kotlinx.serialization.test.*
import org.junit.Test
import java.io.ByteArrayInputStream
import java.io.ByteArrayOutputStream
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
class JsonJvmStreamsTest {
private val strLen = BATCH_SIZE * 2 + 42
@Test
fun testParsesStringsLongerThanBuffer() {
val str = "a".repeat(strLen)
val input = """{"data":"$str"}"""
assertEquals(input, Json.encodeViaStream(StringData.serializer(), StringData(str)))
assertEquals(str, Json.decodeViaStream(StringData.serializer(), input).data)
assertEquals(str, Json.decodeViaStream(String.serializer(), "\"$str\""))
}
@Test
fun testSkipsWhitespacesLongerThanBuffer() {
val str = "a".repeat(strLen)
val ws = " ".repeat(strLen)
val input = """{"data":$ws"$str"}"""
assertEquals("""{"data":"$str"}""", Json.encodeViaStream(StringData.serializer(), StringData(str)))
assertEquals(str, Json.decodeViaStream(StringData.serializer(), input).data)
}
@Test
fun testHandlesEscapesLongerThanBuffer() {
val str = "\\t".repeat(strLen)
val expected = "\t".repeat(strLen)
val input = """{"data":"$str"}"""
assertEquals(input, Json.encodeViaStream(StringData.serializer(), StringData(expected)))
assertEquals(expected, Json.decodeViaStream(StringData.serializer(), input).data)
}
@Test
fun testHandlesLongLenientStrings() {
val str = "a".repeat(strLen)
val input = """{"data":$str}"""
val json = Json { isLenient = true }
assertEquals(str, json.decodeViaStream(StringData.serializer(), input).data)
assertEquals(str, json.decodeViaStream(String.serializer(), str))
}
@Test
fun testThrowsCorrectExceptionOnEof() {
assertFailsWith<SerializationException> {
Json.decodeViaStream(StringData.serializer(), """{"data":""")
}
assertFailsWith<SerializationException> {
Json.decodeViaStream(StringData.serializer(), "")
}
assertFailsWith<SerializationException> {
Json.decodeViaStream(String.serializer(), "\"")
}
}
@Test
fun testRandomEscapeSequences() {
repeat(1000) {
val s = generateRandomUnicodeString(strLen)
try {
val serializer = String.serializer()
val b = ByteArrayOutputStream()
Json.encodeToStream(serializer, s, b)
val restored = Json.decodeFromStream(serializer, ByteArrayInputStream(b.toByteArray()))
assertEquals(s, restored)
} catch (e: Throwable) {
// Not assertion error to preserve cause
throw IllegalStateException("Unexpectedly failed test, cause string: $s", e)
}
}
}
interface Poly
@Serializable
@SerialName("Impl")
data class Impl(val str: String) : Poly
@Test
fun testPolymorphismWhenCrossingBatchSizeNonLeadingKey() {
val json = Json {
serializersModule = SerializersModule {
polymorphic(Poly::class) {
subclass(Impl::class, Impl.serializer())
}
}
}
val longString = "a".repeat(BATCH_SIZE - 5)
val string = """{"str":"$longString", "type":"Impl"}"""
val golden = Impl(longString)
val deserialized = json.decodeViaStream(serializer<Poly>(), string)
assertEquals(golden, deserialized as Impl)
}
@Test
fun testPolymorphismWhenCrossingBatchSize() {
val json = Json {
serializersModule = SerializersModule {
polymorphic(Poly::class) {
subclass(Impl::class, Impl.serializer())
}
}
}
val aLotOfWhiteSpaces = " ".repeat(BATCH_SIZE - 5)
val string = """{$aLotOfWhiteSpaces"type":"Impl", "str":"value"}"""
val golden = Impl("value")
val deserialized = json.decodeViaStream(serializer<Poly>(), string)
assertEquals(golden, deserialized as Impl)
}
}
|