Add GET test for watering controller
user
```ruby
require 'rails_helper'

describe WateringsController do
  before(:each) do
    User.create(email: "test@test.com", password: "testPassword")
    controller.session[:user_id] = User.first.id
  end
  let(:plant) { Plant.create(name: "Test Name",
    species: "Test Species",
    days_per_watering: 10,
    start_date: Date.today()
    )}

  describe 'GET #new' do
    it 'can render the :new template' do
      get :new, params: { plant_id: plant.id }
      expect(response).to render_template(:new)
    end
  end
end
```
assistant