Use `add_$role` helper in snippets specs

spec/controllers/projects/snippets_controller_spec.rb

@@ -6,8 +6,8 @@ describe Projects::SnippetsController do
   let(:user2)   { create(:user) }
 
   before do
-    project.team << [user, :master]
-    project.team << [user2, :master]
+    project.add_master(user)
+    project.add_master(user2)
   end
 
   describe 'GET #index' do
@@ -73,7 +73,7 @@ describe Projects::SnippetsController do
     def create_snippet(project, snippet_params = {})
       sign_in(user)
 
-      project.team << [user, :developer]
+      project.add_developer(user)
 
       post :create, {
         namespace_id: project.namespace.to_param,
@@ -133,7 +133,7 @@ describe Projects::SnippetsController do
     def mark_as_spam
       admin = create(:admin)
       create(:user_agent_detail, subject: snippet)
-      project.team << [admin, :master]
+      project.add_master(admin)
       sign_in(admin)
 
       post :mark_as_spam,

spec/requests/api/project_snippets_spec.rb

@@ -23,7 +23,7 @@ describe API::ProjectSnippets, api: true do
     let(:user) { create(:user) }
 
     it 'returns all snippets available to team member' do
-      project.team << [user, :developer]
+      project.add_developer(user)
       public_snippet = create(:project_snippet, :public, project: project)
       internal_snippet = create(:project_snippet, :internal, project: project)
       private_snippet = create(:project_snippet, :private, project: project)
@@ -76,7 +76,7 @@ describe API::ProjectSnippets, api: true do
 
     context 'when the snippet is spam' do
       def create_snippet(project, snippet_params = {})
-        project.team << [user, :developer]
+        project.add_developer(user)
 
         post api("/projects/#{project.id}/snippets", user), params.merge(snippet_params)
       end