Rspec: 测试私有方法时出错

Question

测试私有方法时出错。请建议如何测试从 public 方法调用私有方法。

Public

def public_method
    private_method
end

私人

  def private_method
    tries = 0
    begin
      raise Product::StaleObjectError.new("Product is changed while you were editing") if stale_object?
      // Do some work
      raise Exception.new("Total amount used is greater than approved") if total_approved < 0

      // Save Product
    rescue Product::StaleObjectError => e
      if tries < MAX_RETRIES
        tries += 1
        sleep(1 + tries)
        reload
        retry
      else
        raise Product::StaleObjectError("Product is changed while you were editing")
      end
    end
    attributes
  end

测试用例：

  before(:each) do
    @prod_v1 = Product.new
  end
  it 'test private method called' do
    expect_any_instance_of {Product}.to receive(:private_method)
    @prod_v1.public_method
  end

我收到测试用例的以下错误

  Failure/Error: expect_any_instance_of {Product}.to receive(:)
     ArgumentError:
       wrong number of arguments (0 for 1)

Answer 1

根据 expect_any_instance_of 的文档，这将接收 class 作为方法参数，因此您应该使用圆括号而不是大括号：

it 'test private method called' do
  expect_any_instance_of(Product).to receive(:private_method)
  ...
end

Rspec: 测试私有方法时出错

Rspec: Getting error while testing private method

ruby

rspec

ruby-on-rails

rspec-rails

ruby-on-rails-3