From 4dde16087d0a704a47528d44e23ace0c536d8c72 Mon Sep 17 00:00:00 2001
From: Vojta Jina <vojta.jina@gmail.com>
Date: Tue, 12 Mar 2013 19:51:52 -0700
Subject: [PATCH] feat(config): normalize string preprocessors into an array

To make it backwards compatible.
---
 lib/config.js                |  7 +++++++
 test/unit/config.spec.coffee | 10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/lib/config.js b/lib/config.js
index 4ef35a2b8..aaaf91078 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -104,6 +104,13 @@ var normalizeConfig = function(config) {
     log.warn('"reporter" is deprecated, use "reporters" instead');
   }
 
+  var preprocessors = config.preprocessors || {};
+  Object.keys(preprocessors).forEach(function(pattern) {
+    if (helper.isString(preprocessors[pattern])) {
+      preprocessors[pattern] = [preprocessors[pattern]];
+    }
+  });
+
   return config;
 };
 
diff --git a/test/unit/config.spec.coffee b/test/unit/config.spec.coffee
index 33f1c8727..c6b75b625 100644
--- a/test/unit/config.spec.coffee
+++ b/test/unit/config.spec.coffee
@@ -270,6 +270,16 @@ describe 'config', ->
       expect(file.watched).to.equal true
 
 
+    it 'should normalize preprocessors to an array', ->
+      config = normalizeConfigWithDefaults
+        preprocessors:
+          '**/*.coffee': 'coffee'
+          '**/*.html': 'html2js'
+
+      expect(config.preprocessors['**/*.coffee']).to.deep.equal ['coffee']
+      expect(config.preprocessors['**/*.html']).to.deep.equal ['html2js']
+
+
   describe 'createPatternObject', ->
 
     it 'should parse string and set defaults', ->