Make the test suite pass on Rhino again.

Author: sjrd

test-suite/js/src/test/scala/org/scalajs/testsuite/jsinterop/JSSymbolTest.scala

@@ -66,12 +66,16 @@ class JSSymbolTest {
 object JSSymbolTest {
 
   @BeforeClass
-  def beforeClass() {
-    assumeTrue("No symbol support", !js.isUndefined(js.Dynamic.global.Symbol))
+  def beforeClass(): Unit = {
+    assumeTrue("Assuming JavaScript symbols are supported",
+        org.scalajs.testsuite.utils.Platform.areJSSymbolsSupported)
   }
 
-  val sym1 = js.Symbol()
-  val sym2 = js.Symbol()
+  /* These need to be lazy vals, so that they do not blow up if there is no
+   * symbol support at all.
+   */
+  lazy val sym1 = js.Symbol()
+  lazy val sym2 = js.Symbol()
 
   def mkObject(members: (js.Symbol, js.Any)*): js.Object = {
     val obj = (new js.Object).asInstanceOf[ObjectCreator]