Added support for grep option

Gruntfile.js

@@ -96,6 +96,21 @@ module.exports = function(grunt) {
           }
         }
       },
+      testArgsList: {
+        configFile:"test/testConf.js",
+        options: {
+          webdriverManagerUpdate: true,
+          args: {
+            grep: '#mytag'
+          }
+        }
+      },
+      testWithoutArgsList: {
+        configFile:"test/testConf.js",
+        options: {
+          webdriverManagerUpdate: true
+        }
+      }
     },
 
     // Unit tests.

README.md

@@ -119,6 +119,7 @@ Supported arguments are below.
 * beforeLaunch `string`: You can specify a file containing code to run once configs are read but before any environment setup. This will only run once, and before onPrepare.
 * onPrepare `string`: You can specify a file containing code to run once protractor is ready and available, and before the specs are executed. If multiple capabilities are being run, this will run once per capability.
 * webDriverProxy `string`: WebDriver proxy configuration to run remote tests
+* grep `string`: Grep string used to match the specs to run. EX. `#tag` or `#tag|#tag2`
 
 #### options.output
 Type: `String`

tasks/protractor_runner.js

@@ -46,7 +46,7 @@ module.exports = function(grunt) {
 
     var keepAlive = opts['keepAlive'];
     var strArgs = ["seleniumAddress", "seleniumServerJar", "seleniumPort", "baseUrl", "rootElement", "browser", "chromeDriver", "chromeOnly", "directConnect", "sauceUser", "sauceKey", "sauceSeleniumAddress", "framework", "frameworkPath", "beforeLaunch", "onPrepare", "webDriverProxy"];
-    var listArgs = ["specs", "exclude", "suite"];
+    var listArgs = ["specs", "exclude", "suite", "grep"];
     var boolArgs = ["includeStackTrace", "verbose"];
     var objectArgs = ["params", "capabilities", "cucumberOpts", "mochaOpts"];
 

test/listArgs_test.js

@@ -0,0 +1,29 @@
+var exec = require('child_process').execSync;
+
+exports.testArgsList = function (test) {
+    var runnerStdOut = exec('grunt protractor:testArgsList --verbose');
+    if (typeof runnerStdOut === 'object'){
+        runnerStdOut = runnerStdOut.toString();
+    }
+    if (runnerStdOut.indexOf('Spawn node with arguments:') > -1 && runnerStdOut.indexOf('--grep #mytag') > -1) {
+        test.ok(true, 'grep option test passed');
+        test.done();
+    } else {
+        test.ok(false, 'grep option not found');
+        test.done();
+    }
+};
+
+exports.testWithoutArgsList = function (test) {
+  var runnerStdOut = exec('grunt protractor:testWithoutArgsList --verbose');
+  if (typeof runnerStdOut === 'object'){
+    runnerStdOut = runnerStdOut.toString();
+  }
+  if (runnerStdOut.indexOf('Spawn node with arguments:') > -1 && runnerStdOut.indexOf('--grep') === -1) {
+    test.ok(true, 'grep option is absent as expected');
+    test.done();
+  } else {
+    test.ok(false, 'grep option should be absent');
+    test.done();
+  }
+};