JS backend: add simple enum test

js/js.tests/test/org/jetbrains/k2js/test/semantics/EnumTest.java

@@ -23,7 +23,11 @@ public class EnumTest  extends SingleFileTranslationTest {
         super("enum/");
     }
 
-    public void testSimple() throws Exception {
+    public void testSimpleEnum() throws Exception {
+        checkFooBoxIsOk();
+    }
+
+    public void testEnumWithInheritance() throws Exception {
         checkFooBoxIsOk();
     }
 

js/js.translator/testFiles/enum/cases/simpleEnum.kt

@@ -0,0 +1,9 @@
+package foo
+
+enum class E {
+    OK
+}
+
+fun box(): String {
+    return E.OK.name()
+}