Add spec for ProtectedBranch.

spec/models/protected_branch_spec.rb

@@ -12,5 +12,51 @@
 require 'spec_helper'
 
 describe ProtectedBranch do
-  pending "add some examples to (or delete) #{__FILE__}"
+  let(:project) { Factory(:project) }
+
+  describe 'Associations' do
+    it { should belong_to(:project) }
+  end
+
+  describe 'Validation' do
+    it { should validate_presence_of(:project_id) }
+    it { should validate_presence_of(:name) }
+  end
+
+  describe 'Callbacks' do
+    subject { ProtectedBranch.new(:project => project, :name => 'branch_name') }
+
+    it 'call update_repository after save' do
+      subject.should_receive(:update_repository)
+      subject.save
+    end
+
+    it 'call update_repository after destroy' do
+      subject.should_receive(:update_repository)
+      subject.destroy
+    end
+  end
+
+  describe '#update_repository' do
+    let(:gitolite) { mock }
+
+    subject { ProtectedBranch.new(:project => project) }
+
+    it "updates the branch's project repo permissions" do
+      Gitlabhq::GitHost.should_receive(:system).and_return(gitolite)
+      gitolite.should_receive(:update_project).with(project.path, project)
+
+      subject.update_repository
+    end
+  end
+
+  describe '#commit' do
+    subject { ProtectedBranch.new(:project => project, :name => 'cant_touch_this') }
+
+    it 'commits itself to its project' do
+      project.should_receive(:commit).with('cant_touch_this')
+
+      subject.commit
+    end
+  end
 end