Refactor code by suggestion to use RegExp and add tests coverage

spec/javascripts/unit/darkswarm/services/matcher_spec.js.coffee

@@ -0,0 +1,54 @@
+describe 'Matcher service', ->
+  Matcher = null
+
+  beforeEach ->
+    module 'Darkswarm'
+    inject ($injector)->
+      Matcher = $injector.get("Matcher")
+
+  describe '#match', ->
+    it "matches full word", ->
+      expect(Matcher.match ["product_name"], "product_name").toEqual true
+
+    it "matches second word", ->
+      expect(Matcher.match ["product_name", 'variant'], "variant").toEqual true
+
+    it "matches word with underscore", ->
+      expect(Matcher.match ["product_name"], "ct_na").toEqual true
+
+    it "matches word if property has two words", ->
+      expect(Matcher.match ["product name"], "nam").toEqual true
+
+    it "matches word with dash", ->
+      expect(Matcher.match ["product-name"], "ct-na").toEqual true
+
+    it "finds in any part of properties", ->
+      expect(Matcher.match ["keyword"], "word").toEqual true
+
+    it "finds beginning of property", ->
+      expect(Matcher.match ["keyword"], "key").toEqual true
+
+    it "doesn't find non-sense or mistypes", ->
+      expect(Matcher.match ["keyword"], "keywrd").toEqual false
+
+  describe '#matchBeginning', ->
+    it "matches full word", ->
+      expect(Matcher.matchBeginning ["product_name"], "product_name").toEqual true
+
+    it "matches second word", ->
+      expect(Matcher.matchBeginning ["product_name", 'variant'], "variant").toEqual true
+
+    it "matches word if property has two words", ->
+      expect(Matcher.matchBeginning ["product name"], "nam").toEqual true
+
+    it "matches second part of word separated by dash", ->
+      expect(Matcher.matchBeginning ["product-name"], "name").toEqual true
+
+    it "matches beginning of property", ->
+      expect(Matcher.matchBeginning ["keyword"], "key").toEqual true
+
+    it "doesn't match in any part of property", ->
+      expect(Matcher.matchBeginning ["keyword"], "word").toEqual false
+
+    it "doesn't match non-sense or mistypes", ->
+      expect(Matcher.matchBeginning ["keyword"], "keywrd").toEqual false