common libs go into the lib/common directory

spec/lib/common/updater/git_updater_spec.rb

@@ -0,0 +1,74 @@
+# encoding: UTF-8
+
+require 'spec_helper'
+
+describe GitUpdater do
+
+  before :each do
+    @git_updater = GitUpdater.new
+  end
+
+  describe '#is_installed?' do
+    after :each do
+      stub_system_command(@git_updater, /^git .* status/, @stub_value)
+      @git_updater.is_installed?.should === @expected
+    end
+
+    it 'should return false if the command is not found' do
+      @stub_value = 'git: command not found'
+      @expected   = false
+    end
+
+    it 'should return true if the repo is a git one' do
+      @stub_value = "# On branch master\n# Changed but not updated:"
+      @expected   = true
+    end
+  end
+
+  describe '#local_revision_number' do
+    after :each do
+      stub_system_command(@git_updater, /^git .* log/, @stub_value)
+      @git_updater.local_revision_number.should === @expected
+    end
+
+    it 'should return 79c01f3' do
+      @stub_value = '
+        commit 79c01f3ed535a8e33876ea091d8217cae7df4028
+        Author: Moi <tadimm>
+        Date:   Wed Jul 11 23:22:16 2012 +0100'
+      @expected = '79c01f3'
+    end
+  end
+
+  describe '#update' do
+    it 'should do nothing xD' do
+      stub_system_command(@git_updater, /^git .* pull/, 'Already up-to-date.')
+      @git_updater.update().should === 'Already up-to-date.'
+    end
+  end
+
+  describe '#has_local_changes?' do
+    after :each do
+      stub_system_command(@git_updater, /^git .* diff --exit-code 2>&1/, @stub_value)
+      @git_updater.has_local_changes?.should === @expected
+    end
+
+    it 'should return true if there are local changes' do
+      @stub_value = 'diff'
+      @expected   = true
+    end
+
+    it 'should return false if there are no local changes' do
+      @stub_value = ''
+      @expected   = false
+    end
+  end
+
+  describe '#reset_head' do
+    it 'should reset the local repo' do
+      stub_system_command(@git_updater, /^git .* reset --hard HEAD/, 'HEAD is now at')
+      @git_updater.reset_head.should match(/^HEAD is now at/)
+    end
+  end
+
+end