feat(runner): Allow onCleanup to accept a file

lib/runner.js

@@ -52,35 +52,23 @@ util.inherits(Runner, EventEmitter);
 /**
  * Internal helper for abstraction of polymorphic filenameOrFn properties.
  * @private
- * @param {Array} source The Array that we'll be iterating through
- *    as we evaluate whether to require or execute each item.
- * @return {q.Promise} A promise that will resolve when the test preparers
- *     are finished.
+ * @param {object} filenameOrFn The filename or function that we will execute.
+ * @return {object} A number or a promise that will resolve when the test
+ *     preparers are finished.
  */
-Runner.prototype.runFilenamesOrFns_ = function(source) {
-  var filenameOrFn;
-  var promises = [];
-  var returned;
-  for (var i = 0; i < source.length; i++) {
-    filenameOrFn = source[i];
-    if (filenameOrFn) {
-      if (typeof filenameOrFn === 'function') {
-        returned = filenameOrFn();
-      } else if (typeof filenameOrFn === 'string') {
-        returned = require(path.resolve(this.config_.configDir, filenameOrFn));
-      } else {
-        // TODO - this is not generic.
-        throw 'config.onPrepare must be a string or function';
-      }
-      if (q.isPromiseAlike(returned)) {
-        promises.push(returned);
-      }
+Runner.prototype.runFilenameOrFn_ = function(filenameOrFn, args) {
+  if (filenameOrFn) {
+    if (typeof filenameOrFn === 'function') {
+      return filenameOrFn.apply(null, args);
+    } else if (typeof filenameOrFn === 'string') {
+      return require(path.resolve(this.config_.configDir, filenameOrFn));
+    } else {
+      // TODO - this is not generic.
+      throw 'config.onPrepare and config.onCleanUp must be a string or function';
     }
   }
-  return q.all(promises);
 };
 
-
 /**
  * Registrar for testPreparers - executed right before tests run.
  * @public
@@ -98,7 +86,17 @@ Runner.prototype.registerTestPreparer = function(filenameOrFn) {
  *     are finished.
  */
 Runner.prototype.runTestPreparers = function() {
-  return this.runFilenamesOrFns_(this.preparers_);
+  var filenameOrFn;
+  var promises = [];
+  var returned;
+  for (var i = 0; i < this.preparers_.length; i++) {
+    filenameOrFn = this.preparers_[i];
+    returned = this.runFilenameOrFn_(filenameOrFn);
+    if (q.isPromiseAlike(returned)) {
+      promises.push(returned);
+    }
+  }
+  return q.all(promises);
 };
 
 
@@ -139,13 +137,12 @@ Runner.prototype.loadDriverProvider_ = function() {
  * @param {int} Standard unix exit code
  */
 Runner.prototype.exit_ = function(exitCode) {
-  if (typeof this.config_.onCleanUp === 'function') {
-    var val = this.config_.onCleanUp(exitCode);
-    if (typeof val === 'number' || q.isPromiseAlike(val)) {
-      return val;
-    }
+  var returned = this.runFilenameOrFn_(this.config_.onCleanUp, [exitCode]);
+  if (typeof returned === 'number' || q.isPromiseAlike(returned)) {
+    return returned;
+  } else {
+    return exitCode;
   }
-  return exitCode;
 };