1 files changed, 127 insertions, 0 deletions
diff --git a/formats/json-tests/jvmTest/src/kotlinx/serialization/features/InternalInheritanceTest.kt b/formats/json-tests/jvmTest/src/kotlinx/serialization/features/InternalInheritanceTest.kt
new file mode 100644
index 00000000..6a1f722e
--- /dev/null
+++ b/formats/json-tests/jvmTest/src/kotlinx/serialization/features/InternalInheritanceTest.kt
@@ -0,0 +1,127 @@
+/*
+ * 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 org.junit.*
+import org.junit.Assert.*
+
+class InternalInheritanceTest : JsonTestBase() {
+    @Serializable
+    open class A(val parent: Int) {
+        private val rootOptional = "rootOptional"
+
+        override fun equals(other: Any?): Boolean {
+            if (this === other) return true
+            if (other !is A) return false
+
+            if (parent != other.parent) return false
+            if (rootOptional != other.rootOptional) return false
+
+            return true
+        }
+    }
+
+    @Serializable
+    open class B(val parent2: Int, @Transient val transientDerived: String = "X", val derived: String) : A(parent2) {
+        protected val bodyDerived = "body"
+    }
+
+    @Serializable
+    class C(val parent3: Int) : B(parent3, derived = "derived") {
+        val lastDerived = "optional"
+
+        override fun equals(other: Any?): Boolean {
+            if (this === other) return true
+            if (other?.javaClass != javaClass) return false
+
+            other as C
+
+            if (!super.equals(other)) return false
+            if (parent3 != other.parent3) return false
+            if (lastDerived != other.lastDerived) return false
+            if (parent2 != other.parent2) return false
+            if (transientDerived != other.transientDerived) return false
+            if (derived != other.derived) return false
+            if (bodyDerived != other.bodyDerived) return false
+
+            return true
+        }
+    }
+
+    @Test
+    fun testEncodeToString() {
+        assertEquals(
+            """{"parent":42,"rootOptional":"rootOptional","parent2":42,"derived":"derived",""" +
+                    """"bodyDerived":"body","parent3":42,"lastDerived":"optional"}""",
+            default.encodeToString(C(42))
+        )
+        assertEquals(
+            """{"parent":13,"rootOptional":"rootOptional","parent2":13,"derived":"bbb","bodyDerived":"body"}""",
+            default.encodeToString(B(13, derived = "bbb"))
+        )
+    }
+
+    @Test
+    fun testParse() {
+        assertEquals(
+            C(42),
+            default.decodeFromString<C>(
+                """{"parent":42,"rootOptional":"rootOptional","parent2":42,""" +
+                        """"derived":"derived","bodyDerived":"body","parent3":42,"lastDerived":"optional"}"""
+            )
+        )
+        assertEquals(
+            C(43),
+            default.decodeFromString<C>("""{"parent":43,"rootOptional":"rootOptional","parent2":43,"derived":"derived",""" +
+                    """"bodyDerived":"body","parent3":43,"lastDerived":"optional"}""")
+        )
+    }
+
+    @Test
+    fun testParseOptionals() {
+        assertEquals(
+            B(100, derived = "wowstring"),
+            default.decodeFromString<B>("""{"parent":100,"rootOptional":"rootOptional","parent2":100,"derived":"wowstring","bodyDerived":"body"}""")
+        )
+        assertEquals(
+            C(44),
+            default.decodeFromString<C>("""{"parent":44, "parent2":44,"derived":"derived","bodyDerived":"body","parent3":44}""")
+        )
+        assertEquals(
+            B(101, derived = "wowstring"),
+            default.decodeFromString<B>("""{"parent":101,"parent2":101,"derived":"wowstring","bodyDerived":"body"}""")
+        )
+        assertEquals(
+            A(77),
+            default.decodeFromString<A>("""{"parent":77,"rootOptional":"rootOptional"}""")
+        )
+        assertEquals(
+            A(78),
+            default.decodeFromString<A>("""{"parent":78}""")
+        )
+    }
+
+    @Test(expected = SerializationException::class)
+    fun testThrowTransient() {
+        Json.decodeFromString<B>("""{"parent":100,"rootOptional":"rootOptional","transientDerived":"X",""" +
+                """"parent2":100,"derived":"wowstring","bodyDerived":"body"}""")
+    }
+
+    @Test(expected = SerializationException::class)
+    fun testThrowMissingField() {
+        default.decodeFromString<C>("""{"parent":42,"rootOptional":"rootOptional","derived":"derived",""" +
+                """"bodyDerived":"body","parent3":42,"lastDerived":"optional"}""")
+    }
+
+    @Test
+    fun testSerializeAsParent() {
+        val obj1: A = B(77, derived = "derived")
+        val obj2: A = C(77)
+        assertEquals("""{"parent":77,"rootOptional":"rootOptional"}""", default.encodeToString(obj1))
+        assertEquals("""{"parent":77,"rootOptional":"rootOptional"}""", default.encodeToString(obj2))
+    }
+}