tinytest: drop results for a run when requested by client, not onComplete.

Should be useful for a non-browser-based test runner.

packages/tinytest/tinytest_client.js

@@ -35,13 +35,15 @@ Meteor._runTestsEverywhere = function (onReport, onComplete) {
     }
   });
 
-  Meteor.subscribe(Meteor._ServerTestResultsSubscription, runId);
+  var handle = Meteor.subscribe(Meteor._ServerTestResultsSubscription, runId);
 
   Meteor.call('tinytest/run', runId, function (error, result) {
     if (error)
       // XXX better report error
       throw new Error("Test server returned an error");
     remoteComplete = true;
+    handle.stop();
+    Meteor.call('tinytest/clearResults', runId);
     maybeDone();
   });
 };

packages/tinytest/tinytest_server.js

@@ -48,17 +48,21 @@
       };
 
       var onComplete = function() {
-        _.each(handlesForRun[runId], function (handle) {
-          handle.stop();
-        });
-        delete handlesForRun[runId];
-        delete reportsForRun[runId];
         future.ret();
       };
 
       Meteor._runTests(onReport, onComplete);
 
       future.wait();
+    },
+    'tinytest/clearResults': function (runId) {
+      _.each(handlesForRun[runId], function (handle) {
+        // XXX this doesn't actually notify the client that it has been
+        // unsubscribed.
+        handle.stop();
+      });
+      delete handlesForRun[runId];
+      delete reportsForRun[runId];
     }
   });
 }());