diff --git a/Gemfile b/Gemfile
index f8d9308..92f0eb9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -113,6 +113,9 @@ group :development, :test do
   gem 'i18n_generators'
 
   gem 'sprockets', '~>2.12.3' # spckets 3.0.3 breaks konacha
+
+  # Mocks and stubs for javascript tests
+  gem 'sinon-rails'
 end
 
 # Acceptance tests
diff --git a/Gemfile.lock b/Gemfile.lock
index 3acc70b..5adaa0a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -283,6 +283,8 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
+    sinon-rails (1.10.3)
+      railties (>= 3.1)
     spring (1.3.6)
     sprockets (2.12.3)
       hike (~> 1.2)
@@ -367,6 +369,7 @@ DEPENDENCIES
   sdoc (~> 0.4.0)
   shoulda-matchers (~> 2.8.0)
   simplecov
+  sinon-rails
   spring
   sprockets (~> 2.12.3)
   sqlite3
diff --git a/spec/javascripts/repository/branch_spec.js.coffee b/spec/javascripts/repository/branch_spec.js.coffee
index 3826139..2849e1e 100644
--- a/spec/javascripts/repository/branch_spec.js.coffee
+++ b/spec/javascripts/repository/branch_spec.js.coffee
@@ -1,10 +1,30 @@
 #= require application
+#= require 'sinon'
 
-describe "Repository.Branch", ->
-  beforeEach ->
-    @repository_branch = new Repository.Branch()
+describe "Branch#constructor", ->
+  it "should construct a branch", ->
+    subject = new Repository.Branch()
+    subject.names.should.deep.equal({})
+    assert.isNull(subject.request)
 
-  describe "Branch#constructor", ->
-    it "should construct a branch", ->
-      @repository_branch.names.should.deep.equal({})
-      assert.isNull(@repository_branch.request)
+describe "toggle", ->
+  @subject = new Repository.Branch()
+  beforeEach ->
+    @combo_box = sinon.stub()
+    $ = sinon.stub(window, "$")
+    $.withArgs("#branches").returns(@combo_box)
+  context "scm_type = SVN", ->
+    @combo_box.hide = sinon.spy()
+    it "should hide the branches combo box", ->
+      $.withArgs("#repository_scm_type").returns({val: -> "SVN"})
+      @subject.toggle()
+      assert.isTrue(@combo_box.hide.calledOnce)
+  context "scm_type != SVN", ->
+    @combo_box.show = sinon.spy()
+      $.withArgs("#repository_address").returns({val: -> "https://github.com/mezuro/prezento.git"})
+    sinon.stub(@subject, "fetch").withArgs("https://github.com/mezuro/prezento.git")
+    @subject.stub = sinon.spy()
+    it "should show the branches combo box", ->
+      $.withArgs("#repository_scm_type").returns({val: -> "GIT"})
+      @subject.toggle()
+      assert.isTrue(@combo_box.show.calledOnce)
--
libgit2 0.21.2