Refactor Snippet#blobs method

app/models/snippet.rb

@@ -213,7 +213,8 @@ class Snippet < ApplicationRecord
   def blobs
     return [] unless repository_exists?
 
-    repository.ls_files(default_branch).map { |file| Blob.lazy(repository, default_branch, file) }
+    branch = default_branch
+    list_files(branch).map { |file| Blob.lazy(repository, branch, file) }
   end
 
   def hook_attrs

spec/models/snippet_spec.rb

@@ -481,17 +481,9 @@ RSpec.describe Snippet do
   end
 
   describe '#blobs' do
+    context 'when repository does not exist' do
       let(:snippet) { create(:snippet) }
 
-    it 'returns a blob representing the snippet data' do
-      blob = snippet.blob
-
-      expect(blob).to be_a(Blob)
-      expect(blob.path).to eq(snippet.file_name)
-      expect(blob.data).to eq(snippet.content)
-    end
-
-    context 'when repository does not exist' do
       it 'returns empty array' do
         expect(snippet.blobs).to be_empty
       end