Expand most kotlinx.serialization tests on JS backend

to enhance and increase test coverage of the plugin.

plugins/kotlinx-serialization/testData/boxIr/annotationsOnFile.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 // FILE: a.kt

plugins/kotlinx-serialization/testData/boxIr/caching.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/classSerializerAsObject.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 package a

plugins/kotlinx-serialization/testData/boxIr/contextualByDefault.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*
@@ -13,4 +11,4 @@ fun box(): String {
     val kind = Ref.serializer().descriptor.kind.toString()
     if (kind != "CONTEXTUAL") return kind
     return "OK"
-}
+}

plugins/kotlinx-serialization/testData/boxIr/contextualFallback.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/contextualWithTypeParameters.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/delegatedInterface.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*
@@ -20,4 +18,4 @@ fun box(): String {
     if (d.size != 1) return "Delegation to Map failed"
     if (d.data != dto.data) return "Equals failed ${d.data}"
     return "OK"
-}
+}

plugins/kotlinx-serialization/testData/boxIr/enumsAreCached.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/genericBaseClassMultiple.kt

@@ -1,4 +1,4 @@
-// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_K1: JS_IR
 
 // WITH_STDLIB
 

plugins/kotlinx-serialization/testData/boxIr/genericBaseClassSimple.kt

@@ -1,4 +1,4 @@
-// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_K1: JS_IR
 
 // WITH_STDLIB
 
@@ -43,4 +43,4 @@ fun box(): String {
     val decodedEmail = Json.decodeFromString<Email<Int>>(encodedEmail)
     if (decodedEmail.toString() != "Email(foo, 1)") return "DecodedEmail: $decodedEmail"
     return "OK"
-}
+}

plugins/kotlinx-serialization/testData/boxIr/generics.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/metaSerializable.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/multimoduleInheritance.kt

@@ -17,9 +17,6 @@ open class OpenBody {
 @Serializable
 abstract class AbstractConstructor(var optional: String = "foo")
 
-// TODO: test fails for K2 if places of 'color' and 'name' are swapped
-// because of https://youtrack.jetbrains.com/issue/KT-54792 (KT-20980)
-// and serialization proto extension is not available in K2.
 @Serializable
 open class Vehicle {
     var color: String? = null
@@ -87,4 +84,4 @@ fun box(): String {
         return e.message!!
     }
 
-}
+}

plugins/kotlinx-serialization/testData/boxIr/multimoduleInheritanceJs.kt

@@ -0,0 +1,89 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// TARGET_BACKEND: JS_IR_ES6
+
+// JS vs JVM difference is that we are not able to understand that we have a default value in other module (KT-62523)
+
+// MODULE: lib
+// FILE: lib.kt
+
+package a
+
+import kotlinx.serialization.*
+
+@Serializable
+open class OpenBody {
+    var optional: String? = "foo"
+}
+
+@Serializable
+abstract class AbstractConstructor(var optional: String = "foo")
+
+@Serializable
+open class Vehicle {
+    var color: String? = null
+    var name: String? = null
+}
+
+
+// MODULE: app(lib)
+// FILE: app.kt
+
+package test
+
+import a.*
+import kotlinx.serialization.*
+import kotlinx.serialization.json.*
+import kotlin.test.assertEquals
+
+@Serializable
+class Test1: OpenBody()
+
+@Serializable
+class Test2: AbstractConstructor()
+
+@Serializable
+open class Car : Vehicle() {
+    var maxSpeed: Int = 100
+}
+
+fun test1() {
+    val string = Json.encodeToString(Test1.serializer(), Test1())
+    assertEquals("{\"optional\":\"foo\"}", string)
+    val reconstructed = Json.decodeFromString(Test1.serializer(), string)
+    assertEquals("foo", reconstructed.optional)
+}
+
+fun test2() {
+    val string = Json.encodeToString(Test2.serializer(), Test2())
+    assertEquals("{\"optional\":\"foo\"}", string)
+    val reconstructed = Json.decodeFromString(Test2.serializer(), string)
+    assertEquals("foo", reconstructed.optional)
+}
+
+fun test3() {
+    val json = Json { allowStructuredMapKeys = true; encodeDefaults = true }
+
+    val car = Car()
+    car.maxSpeed = 100
+    car.name = "ford"
+    val s = json.encodeToString(Car.serializer(), car)
+    assertEquals("""{"color":null,"name":"ford","maxSpeed":100}""", s)
+    val restoredCar = json.decodeFromString(Car.serializer(), s)
+    assertEquals(100, restoredCar.maxSpeed)
+    assertEquals("ford", restoredCar.name)
+    assertEquals(null, restoredCar.color)
+}
+
+fun box(): String {
+    try {
+        test1()
+        test2()
+        test3()
+        return "OK"
+    } catch (e: Throwable) {
+        e.printStackTrace()
+        return e.message!!
+    }
+
+}

plugins/kotlinx-serialization/testData/boxIr/multipleGenericsPolymorphic.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/sealedClassMultifile.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 // FILE: a.kt

plugins/kotlinx-serialization/testData/boxIr/sealedInterfaces.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 package a

plugins/kotlinx-serialization/testData/boxIr/serializableFromAnotherModule.kt

@@ -1,4 +1,3 @@
-// TARGET_BACKEND: JVM_IR
 // WITH_STDLIB
 // ISSUE: KT-57626
 

plugins/kotlinx-serialization/testData/boxIr/serializableFromAnotherModule_multipleFields.kt

@@ -1,4 +1,3 @@
-// TARGET_BACKEND: JVM_IR
 // WITH_STDLIB
 // ISSUE: KT-57626
 

plugins/kotlinx-serialization/testData/boxIr/serializableOnPropertyType.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*
@@ -53,4 +51,4 @@ fun box(): String {
     val s = Json.encodeToString(t)
     if (s != """{"b1":"a","b2":"b#","b3":"c#","b4":"d#"}""") return s
     return "OK"
-}
+}

plugins/kotlinx-serialization/testData/boxIr/starProjections.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*

plugins/kotlinx-serialization/testData/boxIr/typealiasesTest.kt

@@ -41,4 +41,4 @@ fun box(): String {
     val list = Foo.serializer().descriptor.elementDescriptors.map { it.serialName }.toList()
     if (list != listOf("SerializerB", "DateSer", "kotlin.collections.ArrayList")) return list.toString()
     return "OK"
-}
+}

plugins/kotlinx-serialization/testData/boxIr/useSerializersChain.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 // FILE: a.kt
@@ -45,4 +43,4 @@ class Holder(
 fun box(): String {
     val d = Holder.serializer().descriptor.toString()
     return if (d == "a.Holder(i: kotlin.Int, c: MySer<kotlin.Int>)") "OK" else d
-}
+}

plugins/kotlinx-serialization/testData/boxIr/userDefinedSerializerInCompanion.kt

@@ -1,5 +1,3 @@
-// TARGET_BACKEND: JVM_IR
-
 // WITH_STDLIB
 
 import kotlinx.serialization.*
@@ -34,4 +32,4 @@ fun box(): String {
     val boxDesc = Box.serializer(String.serializer()).descriptor
     if (boxDesc.toString() != "Box(boxed: kotlin.String)") return boxDesc.toString()
     return "OK"
-}
+}