1 files changed, 51 insertions, 0 deletions
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/json/polymorphic/JsonPolymorphismExceptionTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/json/polymorphic/JsonPolymorphismExceptionTest.kt
new file mode 100644
index 00000000..b7d4f122
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/json/polymorphic/JsonPolymorphismExceptionTest.kt
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.json.polymorphic
+
+import kotlinx.serialization.*
+import kotlinx.serialization.json.*
+import kotlinx.serialization.json.internal.*
+import kotlinx.serialization.modules.*
+import kotlinx.serialization.test.assertFailsWithSerial
+import kotlin.test.*
+
+class JsonPolymorphismExceptionTest : JsonTestBase() {
+
+    @Serializable
+    abstract class Base
+
+    @Serializable
+    @SerialName("derived")
+    class Derived(val nested: Nested = Nested()) : Base()
+
+    @Serializable
+    class Nested
+
+    @Test
+    fun testDecodingException() = parametrizedTest { jsonTestingMode ->
+        val serialModule = SerializersModule {
+            polymorphic(Base::class) {
+                subclass(Derived::class)
+            }
+        }
+
+        assertFailsWithSerial("JsonDecodingException") {
+            Json { serializersModule = serialModule }.decodeFromString(Base.serializer(), """{"type":"derived","nested":null}""", jsonTestingMode)
+        }
+    }
+
+    @Test
+    fun testMissingDiscriminator() = parametrizedTest { jsonTestingMode ->
+        val serialModule = SerializersModule {
+            polymorphic(Base::class) {
+                subclass(Derived::class)
+            }
+        }
+
+        assertFailsWithSerial("JsonDecodingException") {
+            Json { serializersModule = serialModule }.decodeFromString(Base.serializer(), """{"nested":{}}""", jsonTestingMode)
+        }
+    }
+}