Update tree view to sort folders with submodules

Currently trees are sorted in the fashion:
- folders
- files
- submodules
with each section sorted alphabetically

This changes to this system:
- folders and submodules (sorted together)
- files

1 files changed, 29 insertions, 0 deletions

diff --git a/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb b/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb
new file mode 100644
index 00000000000..10b91d8990b
--- /dev/null
+++ b/spec/features/projects/files/files_sort_submodules_with_folders_spec.rb
@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+feature 'User views files page', feature: true do
+  include WaitForAjax
+
+  let(:user) { create(:user) }
+  let(:project) { create(:forked_project_with_submodules) }
+
+  before do
+    project.team << [user, :master]
+    login_as user
+    visit namespace_project_tree_path(project.namespace, project, project.repository.root_ref)
+  end
+
+  scenario 'user sees folders and submodules sorted together, followed by files' do
+    rows = all('td.tree-item-file-name').map(&:text)
+    tree = project.repository.tree
+
+    folders = tree.trees.map(&:name)
+    files = tree.blobs.map(&:name)
+    submodules = tree.submodules.map do |submodule|
+      submodule.name + " @ " + submodule.id[0..7]
+    end
+
+    sorted_titles = (folders + submodules).sort + files
+
+    expect(rows).to eq(sorted_titles)
+  end
+end