Parcelize: Handle class hierarchies of Parcelers (KT-46567)

2021-05-12 14:51:29 +02:00
parent 709c127f1b
commit bf7db84451
11 changed files with 293 additions and 34 deletions
@@ -0,0 +1,45 @@
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM
+
+@file:JvmName("TestKt")
+package test
+
+import kotlinx.android.parcel.*
+import android.os.Parcel
+import android.os.Parcelable
+
+abstract class UserParceler : Parceler<User> {
+    override fun User.write(parcel: Parcel, flags: Int) {
+        parcel.writeString(name)
+    }
+
+    override fun newArray(size: Int): Array<User> {
+        return Array(size + 1) { User(null) }
+    }
+}
+
+@Parcelize
+class User(val name: String?) : Parcelable {
+    companion object : UserParceler() {
+        override fun create(parcel: Parcel) = User(parcel.readString())
+    }
+}
+
+fun box() = parcelTest { parcel ->
+    val user = User("John")
+    val user2 = User("Joe")
+    val array = arrayOf(user, user2)
+    parcel.writeTypedArray(array, 0)
+
+    val bytes = parcel.marshall()
+    parcel.unmarshall(bytes, 0, bytes.size)
+    parcel.setDataPosition(0)
+
+    val creator = User::class.java.getDeclaredField("CREATOR").get(null) as Parcelable.Creator<User>
+    val result = parcel.createTypedArray(creator)
+
+    assert(result.size == 3)
+    assert(result[0].name == user.name)
+    assert(result[1].name == user2.name)
+    assert(result[2].name == null)
+}