support for config sharing via options

Gruntfile.js

@@ -11,14 +11,15 @@
 module.exports = function(grunt) {
   grunt.initConfig({
     testacular: {
-      continuous: {
+      options: {
         configFile: 'testacular.conf.js',
-        singleRun: true,
         browsers: ['Chrome']
       },
+      continuous: {
+        singleRun: true
+      },
       dev: {
-        configFile: 'testacular.conf.js',
-        browsers: ['Chrome']
+        reporters: 'dots'
       }
     }
   });

README.md

@@ -37,6 +37,28 @@ testacular: {
 }
 ```
 
+##Sharing Configs
+If you have multiple targets, it may be helpful to share common configuration settings between them. Gruntacular supports this by using the `options` property:
+
+```js
+testacular: {
+  options: {
+    configFile: 'testacular.conf.js',
+    runnerPort: 9999,
+    browsers: ['Chrome', 'Firefox']
+  },
+  continuous: {
+    singleRun: true
+    browsers: ['PhantomJS']
+  },
+  dev: {
+    reporters: 'dots'
+  }
+}
+```
+
+In this example the `continuous` and `dev` targets will both use the `configFile` and `runnerPort` specified in the `options`. But the `continuous` target will override the browser setting to use PhantomJS, and also run as a singleRun. The `dev` target will simply change the reporter to dots.
+
 ##Running tests
 There are three ways to run your tests with testacular:
 

TODO.md

@@ -1,5 +1 @@
-[] tests
-[] support the options object to close #3
-[] update docs
-[] make config file optional
-[] version bump
+[] make config file optional

package.json

@@ -30,4 +30,4 @@
   "peerDependencies": {
     "grunt": "0.4.x"
   }
-}
+}

tasks/gruntacular.js

@@ -12,15 +12,22 @@ var server = require('testacular').server;
 module.exports = function(grunt) {
   grunt.registerMultiTask('testacular', 'run testacular.', function() {
     var done = this.async();
-    if (this.data.configFile) {
-      this.data.configFile = grunt.template.process(this.data.configFile);
+    var options = this.options();
+    var data = this.data;
+    //merge options onto data, with data taking precedence
+    Object.keys(this.options()).forEach(function(prop){
+      if (!data[prop]) data[prop] = options[prop];
+    });
+
+    if (data.configFile) {
+      data.configFile = grunt.template.process(data.configFile);
     }
     //support `testacular run`, useful for grunt watch
     if (this.flags.run){
-      runner.run(this.data, finished.bind(done));
+      runner.run(data, finished.bind(done));
       return;
     }
-    server.start(this.data, finished.bind(done));
+    server.start(data, finished.bind(done));
   });
 };
 

testacular.conf.js

@@ -1,4 +1,4 @@
-//TODO make the configFile optional
+//TODO make the configFile optional, waiting on https://github.com/testacular/testacular/issues/358
 files = [
   MOCHA,
   MOCHA_ADAPTER,