fix(runner): exit with proper code when tests fail

When errors with messages matching /timeout/ were created, Protractor
clears the control flow so that the remainder of the tasks scheduled
for that spec don't bleed over into the next spec. This was messing up
the promises used in the runner, since they are also webdriver promises.
Long term, the runner should _not_ use webdriver promises. For now, fix by
having the runner resolve promises directly rather than through chaining,
and add a TODO to use promises which aren't connected to WebDriver's
control flow in the runner.

Closes #214.

lib/runner.js

@@ -99,7 +99,9 @@ var cleanUp = function(runner) {
  *     the value of the selenium address that will be used.
  */
 var setUpSelenium = function() {
-  var promise = webdriver.promise.defer();
+  // TODO: This should not be tied to the webdriver promise loop, it should use
+  // another promise system instead.
+  var deferred = webdriver.promise.defer();
 
   if (config.sauceUser && config.sauceKey) {
     sauceAccount = new SauceLabs({
@@ -110,7 +112,7 @@ var setUpSelenium = function() {
 
   if (config.seleniumAddress) {
     util.puts('Using the selenium server at ' + config.seleniumAddress);
-    promise.fulfill(config.seleniumAddress);
+    deferred.fulfill(config.seleniumAddress);
   } else if (sauceAccount) {
     config.capabilities.username = config.sauceUser;
     config.capabilities.accessKey = config.sauceKey;
@@ -121,7 +123,7 @@ var setUpSelenium = function() {
         config.sauceKey + '@ondemand.saucelabs.com:80/wd/hub';
 
     util.puts('Using SauceLabs selenium server at ' + config.seleniumAddress);
-    promise.fulfill(config.seleniumAddress);
+    deferred.fulfill(config.seleniumAddress);
   } else if (config.seleniumServerJar) {
     util.puts('Starting selenium standalone server...');
     if (config.chromeDriver) {
@@ -143,14 +145,14 @@ var setUpSelenium = function() {
 
       util.puts('Selenium standalone server started at ' + url);
       config.seleniumAddress = server.address();
-      promise.fulfill(config.seleniumAddress);
+      deferred.fulfill(config.seleniumAddress);
     });
   } else {
     throw new Error('You must specify either a seleniumAddress, ' +
         'seleniumServerJar, or saucelabs account.');
   }
 
-  return promise;
+  return deferred.promise;
 }
 
 /**
@@ -181,7 +183,9 @@ var runJasmineTests = function() {
   }
 
   minijn.addSpecs(resolvedSpecs);
-  var runPromise = webdriver.promise.defer();
+  // TODO: This should not be tied to the webdriver promise loop, it should use
+  // another promise system instead.
+  var runDeferred = webdriver.promise.defer();
   driver = new webdriver.Builder().
       usingServer(config.seleniumAddress).
       withCapabilities(config.capabilities).build();
@@ -227,25 +231,29 @@ var runJasmineTests = function() {
           originalOnComplete(runner, log);
         }
         driver.quit().then(function() {
-          runPromise.fulfill(runner);
+          runDeferred.fulfill(runner);
         });
       };
 
       minijn.executeSpecs(options);
     });
   });
 
-  return runPromise;
+  return runDeferred.promise;
 };
 
 
 /**
  * Run Protractor once.
  */
 var runOnce = function() {
-  setUpSelenium().
-      then(runJasmineTests).
-      then(cleanUp);
+  setUpSelenium().then(function() {
+    // cleanUp must be registered directly onto runJasmineTests, not onto
+    // the chained promise, so that cleanUp is still called in case of a
+    // timeout error. Timeout errors need to clear the control flow, which
+    // would mess up chaining promises.
+    runJasmineTests().then(cleanUp);
+  });
 };
 
 exports.addConfig = addConfig;