1 files changed, 66 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/features/inline/InlineMapQuotedTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/features/inline/InlineMapQuotedTest.kt
new file mode 100644
index 00000000..63157d12
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/features/inline/InlineMapQuotedTest.kt
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2017-2022 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.features.inline
+
+import kotlinx.serialization.*
+import kotlinx.serialization.builtins.*
+import kotlinx.serialization.descriptors.*
+import kotlinx.serialization.encoding.*
+import kotlinx.serialization.json.*
+import kotlinx.serialization.test.*
+import kotlin.jvm.*
+import kotlin.test.*
+
+class InlineMapQuotedTest : JsonTestBase() {
+    @Serializable(with = CustomULong.Serializer::class)
+    data class CustomULong(val value: ULong) {
+        @OptIn(ExperimentalSerializationApi::class, ExperimentalUnsignedTypes::class)
+        internal object Serializer : KSerializer<CustomULong> {
+            override val descriptor: SerialDescriptor =
+                @OptIn(ExperimentalUnsignedTypes::class) ULong.serializer().descriptor
+
+            override fun deserialize(decoder: Decoder): CustomULong =
+                CustomULong(decoder.decodeInline(descriptor).decodeSerializableValue(ULong.serializer()))
+
+            override fun serialize(encoder: Encoder, value: CustomULong) {
+                encoder.encodeInline(descriptor).encodeSerializableValue(ULong.serializer(), value.value)
+            }
+        }
+    }
+
+    @JvmInline
+    @Serializable
+    value class WrappedLong(val value: Long)
+
+    @JvmInline
+    @Serializable
+    value class WrappedULong(val value: ULong)
+
+    @Serializable
+    data class Carrier(
+        val mapLong: Map<Long, Long>,
+        val mapULong: Map<ULong, Long>,
+        val wrappedLong: Map<WrappedLong, Long>,
+        val mapWrappedU: Map<WrappedULong, Long>,
+        val mapCustom: Map<CustomULong, Long>
+    )
+
+    @Test
+    fun testInlineClassAsMapKey() {
+        println(Long.MAX_VALUE.toULong() + 2UL)
+        val c = Carrier(
+            mapOf(1L to 1L),
+            mapOf(Long.MAX_VALUE.toULong() + 2UL to 2L),
+            mapOf(WrappedLong(3L) to 3L),
+            mapOf(WrappedULong(Long.MAX_VALUE.toULong() + 4UL) to 4L),
+            mapOf(CustomULong(Long.MAX_VALUE.toULong() + 5UL) to 5L)
+        )
+        assertJsonFormAndRestored(
+            serializer<Carrier>(),
+            c,
+            """{"mapLong":{"1":1},"mapULong":{"9223372036854775809":2},"wrappedLong":{"3":3},"mapWrappedU":{"9223372036854775811":4},"mapCustom":{"9223372036854775812":5}}"""
+        )
+    }
+}