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/*
* Copyright 2017-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.serialization.json.serializers
import kotlinx.serialization.json.*
import kotlinx.serialization.test.*
import kotlin.test.*
class JsonArraySerializerTest : JsonTestBase() {
private val expected = "{\"array\":[1,null,[\"nested literal\"],[],{\"key\":\"value\"}]}"
private val expectedTopLevel = "[1,null,[\"nested literal\"],[],{\"key\":\"value\"}]"
@Test
fun testJsonArray() = parametrizedTest(default) {
assertStringFormAndRestored(expected, JsonArrayWrapper(prebuiltJson()), JsonArrayWrapper.serializer())
}
@Test
fun testJsonArrayAsElement() = parametrizedTest(default) {
assertStringFormAndRestored(expected.replace("array", "element"), JsonElementWrapper(prebuiltJson()), JsonElementWrapper.serializer())
}
@Test
fun testTopLevelJsonObjectAsElement() = parametrizedTest(default) {
assertStringFormAndRestored(expectedTopLevel, prebuiltJson(), JsonElement.serializer())
}
@Test
fun testJsonArrayToString() {
val prebuiltJson = prebuiltJson()
val string = lenient.encodeToString(JsonArray.serializer(), prebuiltJson)
assertEquals(string, prebuiltJson.toString())
}
@Test
fun testMixedLiterals() = parametrizedTest { jsonTestingMode ->
val json = """[1, "2", 3, "4"]"""
val array = default.decodeFromString(JsonArray.serializer(), json, jsonTestingMode)
array.forEachIndexed { index, element ->
require(element is JsonPrimitive)
assertEquals(index % 2 == 1, element.isString)
}
}
@Test
fun testMissingCommas() = parametrizedTest { jsonTestingMode ->
val message = "Expected end of the array or comma"
testFails("[a b c]", message, jsonTestingMode)
testFails("[ 1 2 3 ]", message, jsonTestingMode)
testFails("[null 1 null]", message, jsonTestingMode)
testFails("[1 \n 2]", message, jsonTestingMode)
}
@Test
fun testEmptyArray() = parametrizedTest { jsonTestingMode ->
assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[]", jsonTestingMode))
assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[ ]", jsonTestingMode))
assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[\n\n]", jsonTestingMode))
assertEquals(JsonArray(emptyList()), lenient.decodeFromString(JsonArray.serializer(), "[ \t]", jsonTestingMode))
}
@Test
fun testWhitespaces() = parametrizedTest { jsonTestingMode ->
assertEquals(
JsonArray(listOf(1, 2, 3, 4, 5).map(::JsonPrimitive)),
lenient.decodeFromString(JsonArray.serializer(), "[1, 2, 3, \n 4, 5]", jsonTestingMode)
)
}
@Test
fun testExcessiveCommas() = parametrizedTest { jsonTestingMode ->
val trailing = "Unexpected trailing comma"
val leading = "Unexpected leading comma"
testFails("[a,]", trailing, jsonTestingMode)
testFails("[,1]", leading, jsonTestingMode)
testFails("[,1,]", leading, jsonTestingMode)
testFails("[,]", leading, jsonTestingMode)
testFails("[,,]", leading, jsonTestingMode)
testFails("[,,1]", leading, jsonTestingMode)
testFails("[1,,]", trailing, jsonTestingMode)
testFails("[1,,2]", trailing, jsonTestingMode)
testFails("[, ,]", leading, jsonTestingMode)
testFails("[,\n,]", leading, jsonTestingMode)
}
private fun testFails(input: String, errorMessage: String, jsonTestingMode: JsonTestingMode) {
assertFailsWithSerial("JsonDecodingException", errorMessage) {
lenient.decodeFromString(
JsonArray.serializer(),
input,
jsonTestingMode
)
}
}
private fun prebuiltJson(): JsonArray {
return buildJsonArray {
add(1)
add(JsonNull)
addJsonArray {
add("nested literal")
}
addJsonArray {}
addJsonObject {
put("key", "value")
}
}
}
}
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