JS backend: tests for reflection support

js/js.translator/testData/native/cases/nativeExtensionLikeMember.kt

@@ -0,0 +1,40 @@
+package foo
+
+native
+open class A(val value: String) {
+}
+
+class B : A("B") {
+    fun bar(): String = "B.bar ${value}"
+    var prop: String = "B prop"
+}
+
+native fun A.bar(): String = js.noImpl
+
+native var A.prop: String
+    get() = js.noImpl
+    set(value) = js.noImpl
+
+fun box(): String {
+    var a: A = A("A")
+    val b: B = B()
+
+    assertEquals("A.bar A", a.bar())
+    assertEquals("B.bar B", b.bar())
+
+    assertEquals("A.bar A", a.(A::bar)())
+    assertEquals("B.bar B", b.(A::bar)())
+
+    a.prop = "prop"
+    assertEquals("prop", a.prop)
+    assertEquals("prop", (A::prop).get(a))
+
+    a = b
+    assertEquals("B.bar B", a.bar())
+    assertEquals("B.bar B", a.(A::bar)())
+
+    assertEquals("B prop", a.prop)
+    assertEquals("B prop", (A::prop).get(a))
+
+    return "OK";
+}