Lists (#5703)

* Add structure for lists

* Add list timeline streaming API

* Add list APIs, bind list-account relation to follow relation

* Add API for adding/removing accounts from lists

* Add pagination to lists API

* Add pagination to list accounts API

* Adjust scopes for new APIs

- Creating and modifying lists merely requires "write" scope
- Fetching information about lists merely requires "read" scope

* Add test for wrong user context on list timeline

* Clean up tests

spec/controllers/api/v1/lists_controller_spec.rb

@@ -0,0 +1,68 @@
+require 'rails_helper'
+
+RSpec.describe Api::V1::ListsController, type: :controller do
+  render_views
+
+  let!(:user)  { Fabricate(:user, account: Fabricate(:account, username: 'alice')) }
+  let!(:token) { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: 'read write') }
+  let!(:list)  { Fabricate(:list, account: user.account) }
+
+  before { allow(controller).to receive(:doorkeeper_token) { token } }
+
+  describe 'GET #index' do
+    it 'returns http success' do
+      get :index
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'GET #show' do
+    it 'returns http success' do
+      get :show, params: { id: list.id }
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'POST #create' do
+    before do
+      post :create, params: { title: 'Foo bar' }
+    end
+
+    it 'returns http success' do
+      expect(response).to have_http_status(:success)
+    end
+
+    it 'creates list' do
+      expect(List.where(account: user.account).count).to eq 2
+      expect(List.last.title).to eq 'Foo bar'
+    end
+  end
+
+  describe 'PUT #update' do
+    before do
+      put :update, params: { id: list.id, title: 'Updated title' }
+    end
+
+    it 'returns http success' do
+      expect(response).to have_http_status(:success)
+    end
+
+    it 'updates the list' do
+      expect(list.reload.title).to eq 'Updated title'
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    before do
+      delete :destroy, params: { id: list.id }
+    end
+
+    it 'returns http success' do
+      expect(response).to have_http_status(:success)
+    end
+
+    it 'deletes the list' do
+      expect(List.find_by(id: list.id)).to be_nil
+    end
+  end
+end