KT-2752: add basic tests for JsName

js/js.translator/testData/box/jsName/avoidNameClash.kt

@@ -0,0 +1,18 @@
+package foo
+
+object A {
+    @JsName("js_method") fun f() = "method"
+
+    @JsName("js_property") val f: String get() = "property"
+}
+
+fun test() = js("""
+var a = Kotlin.modules.JS_TESTS.foo.A;
+return a.js_method() + ";" + a.js_property;
+""")
+
+fun box(): String {
+    val result = test()
+    assertEquals("method;property", result);
+    return "OK"
+}