added specs

spec/features/projects/tree/tree_show_spec.rb

+require 'spec_helper'
+
+feature 'Projects tree' do
+  let(:user) { create(:user) }
+  let(:project) { create(:project, :repository) }
+
+  before do
+    project.add_master(user)
+    sign_in(user)
+
+    visit project_tree_path(project, 'master')
+  end
+
+  it 'renders tree table' do
+    expect(page).to have_selector('.tree-item')
+    expect(page).not_to have_selector('.label-lfs', text: 'LFS')
+  end
+
+  context 'LFS' do
+    before do
+      visit project_tree_path(project, File.join('master', 'files/lfs'))
+    end
+
+    it 'renders LFS badge on blob item' do
+      expect(page).to have_selector('.label-lfs', text: 'LFS')
+    end
+  end
+end

spec/views/projects/tree/_blob_item.html.haml_spec.rb

+require 'spec_helper'
+
+describe 'projects/tree/_blob_item' do
+  let(:project) { create(:project, :repository) }
+  let(:repository) { project.repository }
+  let(:blob_item) { Gitlab::Git::Tree.where(repository, SeedRepo::Commit::ID, 'files/ruby').first }
+
+  before do
+    assign(:project, project)
+    assign(:repository, repository)
+    assign(:id, File.join('master', ''))
+    assign(:lfs_blobs, [])
+  end
+
+  it 'renders blob item' do
+    render_partial(blob_item)
+
+    expect(rendered).to have_content(blob_item.name)
+    expect(rendered).not_to have_selector('.label-lfs', text: 'LFS')
+  end
+
+  describe 'LFS blob' do
+    before do
+      assign(:lfs_blobs, [blob_item])
+
+      render_partial(blob_item)
+    end
+
+    it 'renders LFS badge' do
+      expect(rendered).to have_selector('.label-lfs', text: 'LFS')
+    end
+  end
+
+  def render_partial(blob_item)
+    render partial: 'projects/tree/blob_item', locals: {
+      blob_item: blob_item,
+      type: 'blob'
+    }
+  end
+end