1 files changed, 125 insertions, 0 deletions
diff --git a/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufMissingFieldsTest.kt b/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufMissingFieldsTest.kt
new file mode 100644
index 00000000..18616dfe
--- /dev/null
+++ b/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufMissingFieldsTest.kt
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.protobuf
+
+import kotlinx.serialization.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+import kotlinx.serialization.descriptors.*
+import kotlin.test.*
+
+class ProtobufMissingFieldsTest {
+
+    private val buffer = byteArrayOf(10, 30, 8, 11, 16, 2, 26, 3, 115, 112, 97, 26, 6, 115, 112, 97, 95, 101, 115, 26, 2, 101, 115, 26, 5, 101, 115, 95, 101, 115, 32, 1, 16, 25)
+
+    @Test
+    fun testDeserializeAllFields() {
+        val items = ProtoBuf.decodeFromByteArray(Items.serializer(), buffer)
+        assertEquals(25, items.pageSize)
+        assertFalse(items.nextPage)
+        assertEquals(1, items.items.size)
+        assertEquals(ItemPlatform.Android, items.items[0].platform)
+        assertEquals(11, items.items[0].id)
+        assertEquals(listOf("spa", "spa_es", "es", "es_es"), items.items[0].language)
+        assertEquals(ItemContext.Context1, items.items[0].context)
+    }
+
+    @Test
+    fun testDeserializeSomeTagsAreNotInSchema() {
+        val items = ProtoBuf.decodeFromByteArray(ItemsWithoutPageSize.serializer(), buffer)
+        assertFalse(items.nextPage)
+        assertEquals(1, items.items.size)
+        assertEquals(11, items.items[0].id)
+        assertEquals(listOf("spa", "spa_es", "es", "es_es"), items.items[0].language)
+        assertEquals(ItemContext.Context1, items.items[0].context)
+    }
+
+    enum class ItemPlatform {
+        Unknown,
+        iOS,
+        Android
+    }
+
+    enum class ItemContext {
+        Unknown,
+        Context1,
+        Context2
+    }
+
+    @Serializable
+    data class Items(
+        @ProtoNumber(1)
+        val items: List<Item> = emptyList(),
+        @ProtoNumber(2)
+        val pageSize: Int? = null,
+        @ProtoNumber(3)
+        val nextPage: Boolean = false
+    )
+
+    @Serializable
+    data class Item(
+        @ProtoNumber(1)
+        val id: Int,
+        @ProtoNumber(2) @Serializable(with = ItemPlatformSerializer::class)
+        val platform: ItemPlatform = ItemPlatform.Unknown,
+        @ProtoNumber(3)
+        val language: List<String> = emptyList(),
+        @ProtoNumber(4) @Serializable(with = ItemContextSerializer::class)
+        val context: ItemContext = ItemContext.Unknown
+    )
+
+    @Serializable
+    data class ItemsWithoutPageSize(
+        @ProtoNumber(1)
+        val items: List<ItemWithoutPlatform> = emptyList(),
+        @ProtoNumber(3)
+        val nextPage: Boolean = false
+    )
+
+    @Serializable
+    data class ItemWithoutPlatform(
+        @ProtoNumber(1)
+        val id: Int,
+        @ProtoNumber(3)
+        val language: List<String> = emptyList(),
+        @ProtoNumber(4) @Serializable(with = ItemContextSerializer::class)
+        val context: ItemContext = ItemContext.Unknown
+    )
+
+    class ItemPlatformSerializer : KSerializer<ItemPlatform> {
+        override val descriptor: SerialDescriptor = buildSerialDescriptor("ItemPlatform", SerialKind.ENUM) {
+            enumValues<ItemPlatform>().forEach {
+                element(it.name, buildSerialDescriptor("$serialName.${it.name}", StructureKind.OBJECT))
+            }
+        }
+
+        override fun deserialize(decoder: Decoder): ItemPlatform {
+            val index = decoder.decodeInt()
+            return ItemPlatform.values()[index]
+        }
+
+        override fun serialize(encoder: Encoder, value: ItemPlatform) {
+            encoder.encodeInt(value.ordinal)
+        }
+    }
+
+    class ItemContextSerializer : KSerializer<ItemContext> {
+
+        override val descriptor: SerialDescriptor = buildSerialDescriptor("ItemContext", SerialKind.ENUM) {
+            enumValues<ItemContext>().forEach {
+                element(it.name, buildSerialDescriptor("$serialName.${it.name}", StructureKind.OBJECT))
+            }
+        }
+
+        override fun deserialize(decoder: Decoder): ItemContext {
+            val index = decoder.decodeInt()
+            return ItemContext.values()[index]
+        }
+
+        override fun serialize(encoder: Encoder, value: ItemContext) {
+            encoder.encodeInt(value.ordinal)
+        }
+    }
+}