Integration tests for facebook (publiclab#2963)

test/integration/login_flow_test.rb

@@ -71,4 +71,20 @@ class LoginFlowTest < ActionDispatch::IntegrationTest
     request.env['omniauth.auth'] =  OmniAuth.config.mock_auth[:github2]
     assert_not_nil request.env['omniauth.auth']
   end
+
+  test 'twitter login routing' do
+    assert_routing '/auth/twitter/callback', {controller: 'user_sessions', action: 'create',provider: 'twitter'}
+  end
+
+  test 'twitter login post' do
+    assert_routing({path: '/auth/twitter/callback', method: 'post'},{controller: 'user_sessions', action: 'create' ,provider: 'twitter'})
+  end
+
+  test 'should get oauth hash from /auth/twitter' do
+    get '/auth/twitter'
+    assert_redirected_to '/auth/twitter/callback'
+    assert_not_nil OmniAuth.config.mock_auth[:twitter2]
+    request.env['omniauth.auth'] =  OmniAuth.config.mock_auth[:twitter2]
+    assert_not_nil request.env['omniauth.auth']
+  end
 end