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Ruby如何使用包含模块之外的变量

rspec ruby ruby-on-rails

0

TrongBang · 技术社区 · 7 年前

require 'rails_helper'

RSpec.describe Api::MyController do
   let(:var1) {}
   let(:var2) {}
   it 'should calculate some value' do
      expect(var1 + var2).to eq('some value')
   end
end

这就是重构后的情况。

require 'rails_helper'
require_relative './mycontroller/calculation'

RSpec.describe Api::MyController do
   let(:var1) {}
   let(:var2) {}
   include Api::MyController::Calculation
end

module Api::MyController::Calculation
   it 'should calculate some value' do
      expect(var1 + var2).to eq('some value')
   end
end

现在的问题是,当它运行时,它抱怨var1和var2没有定义。

1 回复 | 直到 7 年前

1

max Mike Williams 7 年前

我相信你在找RSpec的 shared examples :

# spec/support/shared_examples/a_calculator.rb
RSpec.shared_examples "a calculator" do
  it 'should calculate some value' do
    expect(x+y).to eq(result)
  end
end

include_examples "name"      # include the examples in the current context
it_behaves_like "name"       # include the examples in a nested context
it_should_behave_like "name" # include the examples in a nested context
matching metadata            # include the examples in the current context

可以通过传递块将上下文传递给共享示例:

require 'rails_helper'
require 'support/shared_examples/a_calculator'
RSpec.describe Api::MyController do
  it_should_behave_like "a calculator" do
    let(:x){ 1 }
    let(:y){ 2 } 
    let(:result){ 3 }  
  end
end