1 files changed, 29 insertions, 0 deletions
diff --git a/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufNothingTest.kt b/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufNothingTest.kt
new file mode 100644
index 00000000..e90ff2be
--- /dev/null
+++ b/formats/protobuf/commonTest/src/kotlinx/serialization/protobuf/ProtobufNothingTest.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017-2023 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.test.*
+import kotlin.test.*
+
+class ProtobufNothingTest {
+    @Serializable
+    /*private*/ data class NullableNothingBox(val value: Nothing?) // `private` doesn't work on the JS legacy target
+
+    @Serializable
+    private data class ParameterizedBox<T : Any>(val value: T?)
+
+    private inline fun <reified T> testConversion(data: T, expectedHexString: String) {
+        val string = ProtoBuf.encodeToHexString(data).uppercase()
+        assertEquals(expectedHexString, string)
+        assertEquals(data, ProtoBuf.decodeFromHexString(string))
+    }
+
+    @Test
+    fun testNothing() {
+        testConversion(NullableNothingBox(null), "")
+        testConversion(ParameterizedBox(null), "")
+    }
+}