RSpec 共享示例不得共享

不得共享的RSpec共享示例

ruby
# 不共享示例的示例代码
RSpec.describe Calculator do
  describe "加法" do
    it "正确执行加法运算" do
      calculator = Calculator.new
      result = calculator.add(2, 3)
      expect(result).to eq(5)
    end
  end
  describe "减法" do
    it "正确执行减法运算" do
      calculator = Calculator.new
      result = calculator.subtract(5, 2)
      expect(result).to eq(3)
    end
  end
end