Render repository blob when it exists

If the feature flag is enabled, the snippet has
a repository attached and it's not empty, then we'll use
the blob stored in the repository. If not, we show the snippet
stored in the database.

This behavior will change once we perform the migration.

app/controllers/concerns/snippets_actions.rb

@@ -6,20 +6,18 @@ module SnippetsActions
   def edit
   end
 
-  # rubocop:disable Gitlab/ModuleWithInstanceVariables
   def raw
     disposition = params[:inline] == 'false' ? 'attachment' : 'inline'
 
     workhorse_set_content_type!
 
     send_data(
-      convert_line_endings(@snippet.content),
+      convert_line_endings(blob.data),
       type: 'text/plain; charset=utf-8',
       disposition: disposition,
-      filename: @snippet.sanitized_file_name
+      filename: Snippet.sanitized_file_name(blob.name)
     )
   end
-  # rubocop:enable Gitlab/ModuleWithInstanceVariables
 
   def js_request?
     request.format.js?

app/controllers/projects/snippets_controller.rb

@@ -66,7 +66,6 @@ class Projects::SnippetsController < Projects::ApplicationController
   end
 
   def show
-    blob = @snippet.blob
     conditionally_expand_blob(blob)
 
     respond_to do |format|
@@ -115,6 +114,16 @@ class Projects::SnippetsController < Projects::ApplicationController
   alias_method :awardable, :snippet
   alias_method :spammable, :snippet
 
+  def blob
+    return unless snippet
+
+    @blob ||= if Feature.enabled?(:version_snippets, current_user) && !snippet.repository.empty?
+                snippet.blobs.first
+              else
+                snippet.blob
+              end
+  end
+
   def spammable_path
     project_snippet_path(@project, @snippet)
   end

app/controllers/snippets_controller.rb

@@ -68,17 +68,15 @@ class SnippetsController < ApplicationController
   end
 
   def show
-    blob = @snippet.blob
     conditionally_expand_blob(blob)
 
+    respond_to do |format|
+      format.html do
         @note = Note.new(noteable: @snippet)
         @noteable = @snippet
 
         @discussions = @snippet.discussions
         @notes = prepare_notes_for_rendering(@discussions.flat_map(&:notes), @noteable)
-
-    respond_to do |format|
-      format.html do
         render 'show'
       end
 
@@ -121,6 +119,16 @@ class SnippetsController < ApplicationController
   alias_method :awardable, :snippet
   alias_method :spammable, :snippet
 
+  def blob
+    return unless snippet
+
+    @blob ||= if Feature.enabled?(:version_snippets, current_user) && !snippet.repository.empty?
+                snippet.blobs.first
+              else
+                snippet.blob
+              end
+  end
+
   def spammable_path
     snippet_path(@snippet)
   end

app/graphql/types/snippet_type.rb

@@ -62,6 +62,7 @@ module Types
 
     field :blob, type: Types::Snippets::BlobType,
           description: 'Snippet blob',
+          calls_gitaly: true,
           null: false
 
     markdown_field :description_html, null: true, method: :description

app/models/concerns/blob_language_from_git_attributes.rb

 # frozen_string_literal: true
 
-# Applicable for blob classes with project attribute
 module BlobLanguageFromGitAttributes
   extend ActiveSupport::Concern
 
   def language_from_gitattributes
-    return unless project
+    return unless repository&.exists?
 
-    repository = project.repository
     repository.gitattribute(path, 'gitlab-language')
   end
 end

app/models/snippet.rb

@@ -197,7 +197,11 @@ class Snippet < ApplicationRecord
   end
 
   def blob
-    @blob ||= Blob.decorate(SnippetBlob.new(self), nil)
+    @blob ||= Blob.decorate(SnippetBlob.new(self), self)
+  end
+
+  def blobs
+    repository.ls_files(repository.root_ref).map { |file| Blob.lazy(self, repository.root_ref, file) }
   end
 
   def hook_attrs
@@ -208,7 +212,7 @@ class Snippet < ApplicationRecord
     super.to_s
   end
 
-  def sanitized_file_name
+  def self.sanitized_file_name(file_name)
     file_name.gsub(/[^a-zA-Z0-9_\-\.]+/, '')
   end
 

app/presenters/snippet_blob_presenter.rb

@@ -32,7 +32,7 @@ class SnippetBlobPresenter < BlobPresenter
   end
 
   def snippet
-    blob.snippet
+    blob.container
   end
 
   def language

app/presenters/snippet_presenter.rb

@@ -27,6 +27,14 @@ class SnippetPresenter < Gitlab::View::Presenter::Delegated
     snippet.submittable_as_spam_by?(current_user)
   end
 
+  def blob
+    if Feature.enabled?(:version_snippets, current_user) && !snippet.repository.empty?
+      snippet.blobs.first
+    else
+      snippet.blob
+    end
+  end
+
   private
 
   def can_access_resource?(ability_prefix)

app/views/projects/snippets/show.html.haml

@@ -9,8 +9,7 @@
   = render 'shared/snippets/header'
 
   .project-snippets
-    %article.file-holder.snippet-file-content
-      = render 'shared/snippets/blob'
+    = render 'shared/snippets/blob', blob: @blob
 
 .row-content-block.top-block.content-component-block
   = render 'award_emoji/awards_block', awardable: @snippet, inline: true

app/views/shared/snippets/_blob.html.haml

-- blob = @snippet.blob
-.js-file-title.file-title-flex-parent
+%article.file-holder.snippet-file-content
+  .js-file-title.file-title-flex-parent
     = render 'projects/blob/header_content', blob: blob
 
     .file-actions.d-none.d-sm-block
@@ -10,4 +10,4 @@
         = open_raw_blob_button(blob)
         = download_raw_snippet_button(@snippet)
 
-= render 'projects/blob/content', blob: blob
+  = render 'projects/blob/content', blob: blob

app/views/shared/snippets/_embed.html.haml

-- blob = @snippet.blob
 .gitlab-embed-snippets
   .js-file-title.file-title-flex-parent
     .file-header-content
@@ -6,10 +5,10 @@
 
       %strong.file-title-name
         %a.gitlab-embedded-snippets-title{ href: url_for(only_path: false, overwrite_params: nil) }
-          = blob.name
+          = @blob.name
 
       %small
-        = number_to_human_size(blob.raw_size)
+        = number_to_human_size(@blob.raw_size)
       %a.gitlab-logo-wrapper{ href: url_for(only_path: false, overwrite_params: nil), title: 'view on gitlab' }
         %img.gitlab-logo{ src: image_url('ext_snippet_icons/logo.svg'), alt: "GitLab logo" }
 
@@ -19,4 +18,4 @@
 
         = embedded_snippet_download_button
   %article.file-holder.snippet-file-content
-    = render 'projects/blob/viewer', viewer: @snippet.blob.simple_viewer, load_async: false, external_embed: true
+    = render 'projects/blob/viewer', viewer: @blob.simple_viewer, load_async: false, external_embed: true

app/views/snippets/show.html.haml

@@ -10,8 +10,7 @@
   = render 'shared/snippets/header'
 
   .personal-snippets
-    %article.file-holder.snippet-file-content
-      = render 'shared/snippets/blob'
+    = render 'shared/snippets/blob', blob: @blob
 
 .row-content-block.top-block.content-component-block
   = render 'award_emoji/awards_block', awardable: @snippet, inline: true

changelogs/unreleased/fj-195517-single-blob-snippet-view-render.yml

+---
+title: Render single snippet blob in repository
+merge_request: 23848
+author:
+type: added

lib/gitlab/search/found_blob.rb

@@ -155,7 +155,7 @@ module Gitlab
       end
 
       def repository
-        @repository ||= project.repository
+        @repository ||= project&.repository
       end
     end
   end

spec/controllers/projects/snippets_controller_spec.rb

@@ -3,9 +3,11 @@
 require 'spec_helper'
 
 describe Projects::SnippetsController do
+  include Gitlab::Routing
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:user2) { create(:user) }
   let(:project) { create(:project_empty_repo, :public) }
-  let(:user)    { create(:user) }
-  let(:user2)   { create(:user) }
 
   before do
     project.add_maintainer(user)
@@ -318,14 +320,45 @@ describe Projects::SnippetsController do
     end
   end
 
+  shared_examples 'successful response' do
+    it 'renders the snippet' do
+      subject
+
+      expect(assigns(:snippet)).to eq(project_snippet)
+      expect(response).to have_gitlab_http_status(:ok)
+    end
+
+    it 'renders the blob from the repository' do
+      subject
+
+      expect(assigns(:blob)).to eq(project_snippet.blobs.first)
+    end
+
+    context 'when feature flag version_snippets is disabled' do
+      before do
+        stub_feature_flags(version_snippets: false)
+      end
+
+      it 'returns the snippet database content' do
+        subject
+
+        blob = assigns(:blob)
+
+        expect(blob.data).to eq(project_snippet.content)
+      end
+    end
+  end
+
   %w[show raw].each do |action|
     describe "GET ##{action}" do
       context 'when the project snippet is private' do
-        let(:project_snippet) { create(:project_snippet, :private, project: project, author: user) }
+        let(:project_snippet) { create(:project_snippet, :private, :repository, project: project, author: user) }
+
+        subject { get action, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param } }
 
         context 'when anonymous' do
           it 'responds with status 404' do
-            get action, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param }
+            subject
 
             expect(response).to have_gitlab_http_status(:not_found)
           end
@@ -336,12 +369,7 @@ describe Projects::SnippetsController do
             sign_in(user)
           end
 
-          it 'renders the snippet' do
-            get action, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param }
-
-            expect(assigns(:snippet)).to eq(project_snippet)
-            expect(response).to have_gitlab_http_status(:ok)
-          end
+          it_behaves_like 'successful response'
         end
 
         context 'when signed in as a project member' do
@@ -349,19 +377,16 @@ describe Projects::SnippetsController do
             sign_in(user2)
           end
 
-          it 'renders the snippet' do
-            get action, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param }
-
-            expect(assigns(:snippet)).to eq(project_snippet)
-            expect(response).to have_gitlab_http_status(:ok)
-          end
+          it_behaves_like 'successful response'
         end
       end
 
       context 'when the project snippet does not exist' do
+        subject { get action, params: { namespace_id: project.namespace, project_id: project, id: 42 } }
+
         context 'when anonymous' do
           it 'responds with status 404' do
-            get action, params: { namespace_id: project.namespace, project_id: project, id: 42 }
+            subject
 
             expect(response).to have_gitlab_http_status(:not_found)
           end
@@ -373,7 +398,7 @@ describe Projects::SnippetsController do
           end
 
           it 'responds with status 404' do
-            get action, params: { namespace_id: project.namespace, project_id: project, id: 42 }
+            subject
 
             expect(response).to have_gitlab_http_status(:not_found)
           end
@@ -383,18 +408,20 @@ describe Projects::SnippetsController do
   end
 
   describe "GET #show for embeddable content" do
-    let(:project_snippet) { create(:project_snippet, snippet_permission, project: project, author: user) }
+    let(:project_snippet) { create(:project_snippet, :repository, snippet_permission, project: project, author: user) }
 
     before do
       sign_in(user)
-
-      get :show, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param }, format: :js
     end
 
+    subject { get :show, params: { namespace_id: project.namespace, project_id: project, id: project_snippet.to_param }, format: :js }
+
     context 'when snippet is private' do
       let(:snippet_permission) { :private }
 
       it 'responds with status 404' do
+        subject
+
         expect(response).to have_gitlab_http_status(:not_found)
       end
     end
@@ -402,10 +429,7 @@ describe Projects::SnippetsController do
     context 'when snippet is public' do
       let(:snippet_permission) { :public }
 
-      it 'responds with status 200' do
-        expect(assigns(:snippet)).to eq(project_snippet)
-        expect(response).to have_gitlab_http_status(:ok)
-      end
+      it_behaves_like 'successful response'
     end
 
     context 'when the project is private' do
@@ -415,6 +439,8 @@ describe Projects::SnippetsController do
         let(:project_snippet) { create(:project_snippet, :public, project: project, author: user) }
 
         it 'responds with status 404' do
+          subject
+
           expect(assigns(:snippet)).to eq(project_snippet)
           expect(response).to have_gitlab_http_status(:not_found)
         end
@@ -423,14 +449,17 @@ describe Projects::SnippetsController do
   end
 
   describe 'GET #raw' do
+    let(:content) { "first line\r\nsecond line\r\nthird line" }
+    let(:formatted_content) { content.gsub(/\r\n/, "\n") }
     let(:project_snippet) do
       create(
-        :project_snippet, :public,
+        :project_snippet, :public, :repository,
         project: project,
         author: user,
-        content: "first line\r\nsecond line\r\nthird line"
+        content: content
       )
     end
+    let(:blob) { project_snippet.blobs.first }
 
     context 'CRLF line ending' do
       let(:params) do
@@ -441,16 +470,22 @@ describe Projects::SnippetsController do
         }
       end
 
+      before do
+        allow_next_instance_of(Blob) do |instance|
+          allow(instance).to receive(:data).and_return(content)
+        end
+      end
+
       it 'returns LF line endings by default' do
         get :raw, params: params
 
-        expect(response.body).to eq("first line\nsecond line\nthird line")
+        expect(response.body).to eq(formatted_content)
       end
 
       it 'does not convert line endings when parameter present' do
         get :raw, params: params.merge(line_ending: :raw)
 
-        expect(response.body).to eq("first line\r\nsecond line\r\nthird line")
+        expect(response.body).to eq(content)
       end
     end
   end

spec/controllers/snippets_controller_spec.rb

@@ -3,11 +3,9 @@
 require 'spec_helper'
 
 describe SnippetsController do
-  let(:user) { create(:user) }
+  let_it_be(:user) { create(:user) }
 
   describe 'GET #index' do
-    let(:user) { create(:user) }
-
     context 'when username parameter is present' do
       it_behaves_like 'paginated collection' do
         let(:collection) { Snippet.all }
@@ -75,8 +73,37 @@ describe SnippetsController do
   end
 
   describe 'GET #show' do
+    shared_examples 'successful response' do
+      it 'renders the snippet' do
+        subject
+
+        expect(assigns(:snippet)).to eq(personal_snippet)
+        expect(response).to have_gitlab_http_status(:ok)
+      end
+
+      it 'renders the blob from the repository' do
+        subject
+
+        expect(assigns(:blob)).to eq(personal_snippet.blobs.first)
+      end
+
+      context 'when feature flag version_snippets is disabled' do
+        before do
+          stub_feature_flags(version_snippets: false)
+        end
+
+        it 'returns the snippet database content' do
+          subject
+
+          blob = assigns(:blob)
+
+          expect(blob.data).to eq(personal_snippet.content)
+        end
+      end
+    end
+
     context 'when the personal snippet is private' do
-      let(:personal_snippet) { create(:personal_snippet, :private, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :private, :repository, author: user) }
 
       context 'when signed in' do
         before do
@@ -95,11 +122,8 @@ describe SnippetsController do
         end
 
         context 'when signed in user is the author' do
-          it 'renders the snippet' do
-            get :show, params: { id: personal_snippet.to_param }
-
-            expect(assigns(:snippet)).to eq(personal_snippet)
-            expect(response).to have_gitlab_http_status(:ok)
+          it_behaves_like 'successful response' do
+            subject { get :show, params: { id: personal_snippet.to_param } }
           end
 
           it 'responds with status 404 when embeddable content is requested' do
@@ -120,18 +144,15 @@ describe SnippetsController do
     end
 
     context 'when the personal snippet is internal' do
-      let(:personal_snippet) { create(:personal_snippet, :internal, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :internal, :repository, author: user) }
 
       context 'when signed in' do
         before do
           sign_in(user)
         end
 
-        it 'renders the snippet' do
-          get :show, params: { id: personal_snippet.to_param }
-
-          expect(assigns(:snippet)).to eq(personal_snippet)
-          expect(response).to have_gitlab_http_status(:ok)
+        it_behaves_like 'successful response' do
+          subject { get :show, params: { id: personal_snippet.to_param } }
         end
 
         it 'responds with status 404 when embeddable content is requested' do
@@ -151,18 +172,15 @@ describe SnippetsController do
     end
 
     context 'when the personal snippet is public' do
-      let(:personal_snippet) { create(:personal_snippet, :public, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :public, :repository, author: user) }
 
       context 'when signed in' do
         before do
           sign_in(user)
         end
 
-        it 'renders the snippet' do
-          get :show, params: { id: personal_snippet.to_param }
-
-          expect(assigns(:snippet)).to eq(personal_snippet)
-          expect(response).to have_gitlab_http_status(:ok)
+        it_behaves_like 'successful response' do
+          subject { get :show, params: { id: personal_snippet.to_param } }
         end
 
         it 'responds with status 200 when embeddable content is requested' do
@@ -481,8 +499,82 @@ describe SnippetsController do
   end
 
   describe "GET #raw" do
+    shared_examples '200 status' do
+      before do
+        subject
+      end
+
+      it 'responds with status 200' do
+        expect(assigns(:snippet)).to eq(snippet)
+        expect(response).to have_gitlab_http_status(:ok)
+      end
+
+      it 'has expected headers' do
+        expect(response.header['Content-Type']).to eq('text/plain; charset=utf-8')
+        expect(response.header['Content-Disposition']).to match(/inline/)
+      end
+
+      it "sets #{Gitlab::Workhorse::DETECT_HEADER} header" do
+        expect(response.header[Gitlab::Workhorse::DETECT_HEADER]).to eq 'true'
+      end
+    end
+
+    shared_examples 'CRLF line ending' do
+      let(:content) { "first line\r\nsecond line\r\nthird line" }
+      let(:formatted_content) { content.gsub(/\r\n/, "\n") }
+      let(:snippet) do
+        create(:personal_snippet, :public, :repository, author: user, content: content)
+      end
+
+      before do
+        allow_next_instance_of(Blob) do |instance|
+          allow(instance).to receive(:data).and_return(content)
+        end
+
+        subject
+      end
+
+      it 'returns LF line endings by default' do
+        expect(response.body).to eq(formatted_content)
+      end
+
+      context 'when parameter present' do
+        let(:params) { { id: snippet.to_param, line_ending: :raw } }
+
+        it 'does not convert line endings when parameter present' do
+          expect(response.body).to eq(content)
+        end
+      end
+    end
+
+    shared_examples 'successful response' do
+      it_behaves_like '200 status'
+      it_behaves_like 'CRLF line ending'
+
+      it 'returns snippet first blob data' do
+        subject
+
+        expect(response.body).to eq snippet.blobs.first.data
+      end
+
+      context 'when feature flag version_snippets is disabled' do
+        before do
+          stub_feature_flags(version_snippets: false)
+        end
+
+        it_behaves_like '200 status'
+        it_behaves_like 'CRLF line ending'
+
+        it 'returns snippet database content' do
+          subject
+
+          expect(response.body).to eq snippet.content
+        end
+      end
+    end
+
     context 'when the personal snippet is private' do
-      let(:personal_snippet) { create(:personal_snippet, :private, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :private, :repository, author: user) }
 
       context 'when signed in' do
         before do
@@ -501,24 +593,11 @@ describe SnippetsController do
         end
 
         context 'when signed in user is the author' do
-          before do
-            get :raw, params: { id: personal_snippet.to_param }
-          end
-
-          it 'responds with status 200' do
-            expect(assigns(:snippet)).to eq(personal_snippet)
-            expect(response).to have_gitlab_http_status(:ok)
-          end
+          it_behaves_like 'successful response' do
+            let(:snippet) { personal_snippet }
+            let(:params) { { id: snippet.to_param } }
 
-          it 'has expected headers' do
-            expect(response.header['Content-Type']).to eq('text/plain; charset=utf-8')
-
-            expect(response.header['Content-Disposition']).to match(/inline/)
-          end
-
-          it "sets #{Gitlab::Workhorse::DETECT_HEADER} header" do
-            expect(response).to have_gitlab_http_status(:ok)
-            expect(response.header[Gitlab::Workhorse::DETECT_HEADER]).to eq "true"
+            subject { get :raw, params: params }
           end
         end
       end
@@ -533,18 +612,18 @@ describe SnippetsController do
     end
 
     context 'when the personal snippet is internal' do
-      let(:personal_snippet) { create(:personal_snippet, :internal, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :internal, :repository, author: user) }
 
       context 'when signed in' do
         before do
           sign_in(user)
         end
 
-        it 'responds with status 200' do
-          get :raw, params: { id: personal_snippet.to_param }
+        it_behaves_like 'successful response' do
+          let(:snippet) { personal_snippet }
+          let(:params) { { id: snippet.to_param } }
 
-          expect(assigns(:snippet)).to eq(personal_snippet)
-          expect(response).to have_gitlab_http_status(:ok)
+          subject { get :raw, params: params }
         end
       end
 
@@ -558,36 +637,18 @@ describe SnippetsController do
     end
 
     context 'when the personal snippet is public' do
-      let(:personal_snippet) { create(:personal_snippet, :public, author: user) }
+      let_it_be(:personal_snippet) { create(:personal_snippet, :public, :repository, author: user) }
 
       context 'when signed in' do
         before do
           sign_in(user)
         end
 
-        it 'responds with status 200' do
-          get :raw, params: { id: personal_snippet.to_param }
+        it_behaves_like 'successful response' do
+          let(:snippet) { personal_snippet }
+          let(:params) { { id: snippet.to_param } }
 
-          expect(assigns(:snippet)).to eq(personal_snippet)
-          expect(response).to have_gitlab_http_status(:ok)
-        end
-
-        context 'CRLF line ending' do
-          let(:personal_snippet) do
-            create(:personal_snippet, :public, author: user, content: "first line\r\nsecond line\r\nthird line")
-          end
-
-          it 'returns LF line endings by default' do
-            get :raw, params: { id: personal_snippet.to_param }
-
-            expect(response.body).to eq("first line\nsecond line\nthird line")
-          end
-
-          it 'does not convert line endings when parameter present' do
-            get :raw, params: { id: personal_snippet.to_param, line_ending: :raw }
-
-            expect(response.body).to eq("first line\r\nsecond line\r\nthird line")
-          end
+          subject { get :raw, params: params }
         end
       end
 

spec/features/discussion_comments/snippets_spec.rb

@@ -3,9 +3,9 @@
 require 'spec_helper'
 
 describe 'Thread Comments Snippet', :js do
-  let(:user) { create(:user) }
-  let(:project) { create(:project) }
-  let(:snippet) { create(:project_snippet, :private, project: project, author: user) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:snippet) { create(:project_snippet, :private, :repository, project: project, author: user) }
 
   before do
     stub_feature_flags(snippets_vue: false)

spec/features/projects/snippets/create_snippet_spec.rb

@@ -5,8 +5,8 @@ require 'spec_helper'
 describe 'Projects > Snippets > Create Snippet', :js do
   include DropzoneHelper
 
-  let(:user) { create(:user) }
-  let(:project) { create(:project, :public) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project, :public) }
 
   def description_field
     find('.js-description-input input,textarea')
@@ -102,7 +102,7 @@ describe 'Projects > Snippets > Create Snippet', :js do
     end
 
     it 'shows a public snippet on the index page but not the New snippet button' do
-      snippet = create(:project_snippet, :public, project: project)
+      snippet = create(:project_snippet, :public, :repository, project: project)
 
       visit project_snippets_path(project)
 

spec/features/projects/snippets/user_comments_on_snippet_spec.rb

@@ -3,9 +3,9 @@
 require 'spec_helper'
 
 describe 'Projects > Snippets > User comments on a snippet', :js do
-  let(:project) { create(:project) }
-  let!(:snippet) { create(:project_snippet, project: project, author: user) }
-  let(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:snippet) { create(:project_snippet, :repository, project: project, author: user) }
 
   before do
     stub_feature_flags(snippets_vue: false)

spec/features/reportable_note/snippets_spec.rb

@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe 'Reportable note on snippets', :js do
-  let(:user) { create(:user) }
-  let(:project) { create(:project) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
 
   before do
     stub_feature_flags(snippets_vue: false)
@@ -13,8 +13,8 @@ describe 'Reportable note on snippets', :js do
   end
 
   describe 'on project snippet' do
-    let(:snippet) { create(:project_snippet, :public, project: project, author: user) }
-    let!(:note) { create(:note_on_project_snippet, noteable: snippet, project: project) }
+    let_it_be(:snippet) { create(:project_snippet, :public, :repository, project: project, author: user) }
+    let_it_be(:note) { create(:note_on_project_snippet, noteable: snippet, project: project) }
 
     before do
       visit project_snippet_path(project, snippet)

spec/graphql/types/snippet_type_spec.rb

@@ -16,4 +16,47 @@ describe GitlabSchema.types['Snippet'] do
   describe 'authorizations' do
     it { expect(described_class).to require_graphql_authorizations(:read_snippet) }
   end
+
+  describe '#blob' do
+    let_it_be(:user) { create(:user) }
+    let(:query_blob) { subject.dig('data', 'snippets', 'edges')[0]['node']['blob'] }
+    let(:query) do
+      %(
+        {
+          snippets {
+            edges {
+              node {
+                blob {
+                  name
+                  path
+                }
+              }
+            }
+          }
+        }
+      )
+    end
+
+    subject { GitlabSchema.execute(query, context: { current_user: user }).as_json }
+
+    context 'when snippet has repository' do
+      let!(:snippet) { create(:personal_snippet, :repository, :public, author: user) }
+      let(:blob) { snippet.blobs.first }
+
+      it 'returns blob from the repository' do
+        expect(query_blob['name']).to eq blob.name
+        expect(query_blob['path']).to eq blob.path
+      end
+    end
+
+    context 'when snippet does not have a repository' do
+      let!(:snippet) { create(:personal_snippet, :public, author: user) }
+      let(:blob) { snippet.blob }
+
+      it 'returns SnippetBlob type' do
+        expect(query_blob['name']).to eq blob.name
+        expect(query_blob['path']).to eq blob.path
+      end
+    end
+  end
 end

spec/models/concerns/blob_language_from_git_attributes_spec.rb

@@ -11,13 +11,20 @@ describe BlobLanguageFromGitAttributes do
     subject(:blob) { fake_blob(path: 'file.md') }
 
     it 'returns return value from gitattribute' do
-      expect(blob.project.repository).to receive(:gitattribute).with(blob.path, 'gitlab-language').and_return('erb?parent=json')
+      allow(blob.repository).to receive(:exists?).and_return(true)
+      expect(blob.repository).to receive(:gitattribute).with(blob.path, 'gitlab-language').and_return('erb?parent=json')
 
       expect(blob.language_from_gitattributes).to eq('erb?parent=json')
     end
 
-    it 'returns nil if project is absent' do
-      allow(blob).to receive(:project).and_return(nil)
+    it 'returns nil if repository is absent' do
+      allow(blob).to receive(:repository).and_return(nil)
+
+      expect(blob.language_from_gitattributes).to eq(nil)
+    end
+
+    it 'returns nil if repository does not exist' do
+      allow(blob.repository).to receive(:exists?).and_return(false)
 
       expect(blob.language_from_gitattributes).to eq(nil)
     end

spec/presenters/snippet_blob_presenter_spec.rb

@@ -76,18 +76,18 @@ describe SnippetBlobPresenter do
 
     context 'with ProjectSnippet' do
       let!(:project) { create(:project) }
-      let(:snippet) { build(:project_snippet, project: project, id: 1) }
+      let(:snippet) { create(:project_snippet, project: project) }
 
       it 'returns the raw path' do
-        expect(subject).to eq "/#{snippet.project.full_path}/snippets/1/raw"
+        expect(subject).to eq "/#{snippet.project.full_path}/snippets/#{snippet.id}/raw"
       end
     end
 
     context 'with PersonalSnippet' do
-      let(:snippet) { build(:personal_snippet, id: 1) }
+      let(:snippet) { create(:personal_snippet) }
 
       it 'returns the raw path' do
-        expect(subject).to eq "/snippets/1/raw"
+        expect(subject).to eq "/snippets/#{snippet.id}/raw"
       end
     end
   end

spec/presenters/snippet_presenter_spec.rb

@@ -143,4 +143,24 @@ describe SnippetPresenter do
       expect(subject).to be_truthy
     end
   end
+
+  describe '#blob' do
+    let(:snippet) { personal_snippet }
+
+    subject { presenter.blob }
+
+    context 'when snippet does not have a repository' do
+      it 'returns SnippetBlob' do
+        expect(subject).to eq snippet.blob
+      end
+    end
+
+    context 'when snippet has a repository' do
+      let(:snippet) { create(:snippet, :repository, author: user) }
+
+      it 'returns repository first blob' do
+        expect(subject).to eq snippet.blobs.first
+      end
+    end
+  end
 end