Ignored/fixed some tests for Kotlin/Native

libraries/stdlib/test/properties/delegation/MapAccessorsTest.kt

@@ -31,8 +31,8 @@ class ValByMapExtensionsTest {
 }
 
 
-
 class VarByMapExtensionsTest {
+// IGNORE_BACKEND: NATIVE
     val map = hashMapOf<String, Any?>("a" to "all", "b" to null, "c" to 1, "xProperty" to 1.0)
     val map2: MutableMap<String, CharSequence> = hashMapOf("a2" to "all")
 
@@ -66,3 +66,38 @@ class VarByMapExtensionsTest {
         assertEquals(null, d)
     }
 }
+
+class VarByMapExtensionsTest_ForNative {
+    val map = hashMapOf<String, Any?>("a" to "all", "b" to null, "c" to 1, "xProperty" to 1.0)
+    val map2: MutableMap<String, CharSequence> = hashMapOf("a2" to "all")
+
+    var a: String by map
+    var b: Any? by map
+    var c: Int by map
+    var d: String? by map
+    var a2: String by map2.withDefault { "empty" }
+    //var x: Int by map2  // prohibited by type system
+
+    @Test fun doTest() {
+        assertEquals("all", a)
+        assertEquals(null, b)
+        assertEquals(1, c)
+        c = 2
+        assertEquals(2, c)
+        assertEquals(2, map["c"])
+
+        assertEquals("all", a2)
+        map2.remove("a2")
+        assertEquals("empty", a2)
+
+        map["c"] = "string"
+        // fails { c }  // does not fail in JS due to KT-8135
+
+        map["a"] = null
+        //a Fails in Native, KT-8135 is already fixed in Native. // fails { a } // does not fail due to KT-8135
+
+        assertFailsWith<NoSuchElementException> { d }
+        map["d"] = null
+        assertEquals(null, d)
+    }
+}