add test files

js/js.translator/testFiles/trait/cases/traitAddsFunctionsToClass.kt

@@ -0,0 +1,21 @@
+package foo
+
+trait Test {
+    fun addFoo(s:String) : String {
+       return s + "FOO"
+    }
+
+    fun addBar(s:String) : String {
+        return s + "BAR"
+    }
+}
+
+
+class A() : Test {
+    val string = "TEST"
+    fun value() : String {
+        return addBar(addFoo(string))
+    }
+}
+
+fun box() = A().value() == "TESTFOOBAR"