JS: add tests for reflection against external classes

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java

@@ -6818,6 +6818,12 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("js/js.translator/testData/box/reflection"), Pattern.compile("^([^_](.+))\\.kt$"), TargetBackend.JS, true);
         }
 
+        @TestMetadata("external.kt")
+        public void testExternal() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/reflection/external.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("jsClass.kt")
         public void testJsClass() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/reflection/jsClass.kt");

js/js.translator/testData/box/reflection/external.js

@@ -0,0 +1,4 @@
+function A() {
+}
+
+var O = {};

js/js.translator/testData/box/reflection/external.kt

@@ -0,0 +1,13 @@
+external class A
+
+external object O
+
+fun box(): String {
+    assertEquals(null, A::class.simpleName, "simpleName of external class must be null")
+    assertEquals(js("A"), A::class.js, "Can't get reference to external class")
+
+    assertEquals(null, O::class.simpleName, "simpleName of external object must be null")
+    assertEquals(js("O"), O::class.js, "Can't get reference to external object via instance")
+
+    return "OK"
+}