【Rspec】メソッドスタブ（allow ..to receive）の小さなサンプルメモ

メモ

person.rb

class Person
  def sex
    "man"
  end
  def test(test)
    ""
  end

  def test2(a1, a2)
    ""
  end
end

person_spec.rb

require 'person'

RSpec.describe Person do

  it {
    person = Person.new

    allow(person).to receive(:sex).and_return("woman")
    expect(person.sex).to eq("woman")

    allow(person).to receive(:sex) { "kure" }
    expect(person.sex).to eq("kure")

    allow(person).to receive(:test2) do |a1, a2|
      a1 + a2
    end
    expect(person.test2("1", "2")).to eq("12")


    allow(person).to receive(:test).with("hoge") do
      "hoge"
    end
    expect(person.test("hoge")).to eq("hoge")
  }

end

実行

 % rspec spec/person_spec_stub.rb
.

Finished in 0.02673 seconds (files took 0.24371 seconds to load)
1 example, 0 failures

参考

Method stubs - RSpec Mocks - RSpec - Relish https://relishapp.com/rspec/rspec-mocks/v/2-99/docs/method-stubs

13 method stubを使おう | RSpec入門 - プログラミングならドットインストール https://dotinstall.com/lessons/basic_rspec/27913