1 files changed, 62 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/features/ObjectSerialization.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/features/ObjectSerialization.kt
new file mode 100644
index 00000000..da5919c1
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/features/ObjectSerialization.kt
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2017-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.features
+
+import kotlinx.serialization.*
+import kotlinx.serialization.json.*
+import kotlinx.serialization.modules.*
+import kotlinx.serialization.test.*
+import kotlin.test.*
+
+class ObjectSerializationTest : JsonTestBase() {
+
+    sealed class ApiResponse {
+        @Serializable
+        @SerialName("ApiError")
+        object Error : ApiResponse()
+
+        @Serializable
+        @SerialName("ApiResponse")
+        data class Response(val message: String) : ApiResponse()
+    }
+
+    @Serializable
+    data class ApiCarrier(@Polymorphic val response: ApiResponse)
+
+    val module = SerializersModule {
+        polymorphic(ApiResponse::class) {
+            subclass(ApiResponse.Error.serializer())
+            subclass(ApiResponse.Response.serializer())
+        }
+    }
+
+    val json = Json { serializersModule = module }
+
+    @Test
+    fun testSealedClassSerialization() {
+        val carrier1 = ApiCarrier(ApiResponse.Error)
+        val carrier2 = ApiCarrier(ApiResponse.Response("OK"))
+        assertJsonFormAndRestored(ApiCarrier.serializer(), carrier1, """{"response":{"type":"ApiError"}}""", json)
+        assertJsonFormAndRestored(
+            ApiCarrier.serializer(),
+            carrier2,
+            """{"response":{"type":"ApiResponse","message":"OK"}}""",
+            json
+        )
+    }
+
+    @Test
+    fun testUnknownKeys() {
+        val string = """{"metadata":"foo"}"""
+        assertFailsWithMessage<SerializationException>("ignoreUnknownKeys") {
+            Json.decodeFromString(
+                ApiResponse.Error.serializer(),
+                string
+            )
+        }
+        val json = Json { ignoreUnknownKeys = true }
+        assertEquals(ApiResponse.Error, json.decodeFromString(ApiResponse.Error.serializer(), string))
+    }
+}