Make fixtures/snippet.rb deterministic

spec/javascripts/fixtures/snippet.rb

@@ -7,7 +7,6 @@ describe SnippetsController, '(JavaScript fixtures)', type: :controller do
   let(:namespace) { create(:namespace, name: 'frontend-fixtures' )}
   let(:project) { create(:project, :repository, namespace: namespace, path: 'branches-project') }
   let(:snippet) { create(:personal_snippet, title: 'snippet.md', content: '# snippet', file_name: 'snippet.md', author: admin) }
-  let!(:snippet_note) { create(:discussion_note_on_snippet, noteable: snippet, project: project, author: admin, note: '- [ ] Task List Item') }
 
   render_views
 
@@ -17,6 +16,7 @@ describe SnippetsController, '(JavaScript fixtures)', type: :controller do
 
   before do
     sign_in(admin)
+    allow(Discussion).to receive(:build_discussion_id).and_return(['discussionid:ceterumcenseo'])
   end
 
   after do
@@ -24,6 +24,8 @@ describe SnippetsController, '(JavaScript fixtures)', type: :controller do
   end
 
   it 'snippets/show.html.raw' do |example|
+    create(:discussion_note_on_snippet, noteable: snippet, project: project, author: admin, note: '- [ ] Task List Item')
+
     get(:show, params: { id: snippet.to_param })
 
     expect(response).to be_success