Merge branch '23718/backup-rake-task-human-readable' into 'master'

23718/backup rake task human readable

## What does this MR do?
Add the human readable format to the backup tar file. 
From `1477317140_gitlab_backup.tar` to `1477317140_2016_10_24_gitlab_backup.tar`.

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?
#23718 issue
## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
23718

See merge request !7188

1 files changed, 31 insertions, 0 deletions

diff --git a/spec/tasks/gitlab/backup_rake_spec.rb b/spec/tasks/gitlab/backup_rake_spec.rb
index ecbfc236d3d..a9fea5f1e81 100644
--- a/spec/tasks/gitlab/backup_rake_spec.rb
+++ b/spec/tasks/gitlab/backup_rake_spec.rb
@@ -333,4 +333,35 @@ describe 'gitlab:app namespace rake task' do
       expect { run_rake_task('gitlab:backup:restore') }.not_to raise_error
     end
   end
+
+  describe "Human Readable Backup Name" do
+    def tars_glob
+      Dir.glob(File.join(Gitlab.config.backup.path, '*_gitlab_backup.tar'))
+    end
+
+    before :all do
+      @origin_cd = Dir.pwd
+
+      reenable_backup_sub_tasks
+
+      FileUtils.rm tars_glob
+
+      # Redirect STDOUT and run the rake task
+      orig_stdout = $stdout
+      $stdout = StringIO.new
+      run_rake_task('gitlab:backup:create')
+      $stdout = orig_stdout
+
+      @backup_tar = tars_glob.first
+    end
+
+    after :all do
+      FileUtils.rm(@backup_tar)
+      Dir.chdir @origin_cd
+    end
+
+    it 'name has human readable time' do
+      expect(@backup_tar).to match(/\d+_\d{4}_\d{2}_\d{2}_gitlab_backup.tar$/)
+    end
+  end
 end # gitlab:app namespace