Fixed async tests sometimes waiting the full timeout even though the test group is completed

Author: chrisdp

framework/src/source/TestRunner.bs

@@ -252,7 +252,13 @@ namespace rooibos
               timeout = testSuite.asyncTimeout = invalid ? 60000 : testSuite.asyncTimeout
 
               ? "Waiting max " timeout "ms for the test suite to finish"
-              m.waitForField(node, "rooibosSuiteFinished", 10, timeout / 10)
+              t = createObject("roTimespan")
+              while node.rooibosSuiteFinished = false
+                m.wait(10)
+                if t.totalMilliseconds() >= timeout
+                  exit while
+                end if
+              end while
             end if
           end if
           nodeResults = node.asyncRooibosTestResult