Ruby初學者試圖從Ruby中的另一個類調用一個方法？

Question

我正試圖讓下面的工作。不知道我失敗的地方。我收到以下錯誤：

1）錯誤：

test_google(Google): 
NoMethodError: undefined method `new' for Method:Class 
    google.rb:15:in `setup' 

我是新來的寶石，所以這是相當101有人能向我解釋我的錯誤，爲什麼讓我能理解。謝謝！

require "test/unit" 
require "selenium-webdriver" 
require "json" 
require "time" 
require_relative "methods" 

class Google < Test::Unit::TestCase 

    def setup 
    @driver = Selenium::WebDriver.for :firefox 
    @base_url = "https://www.google.com/" 
    @accept_next_alert = true 
    @driver.manage.timeouts.implicit_wait = 30 
    @verification_errors = [] 
    @search = Method.new() 
    end 

    def teardown 
    @driver.quit 
    assert_equal [], @verification_errors 
    end 

    def test_google 
    @driver.get(@base_url + "/") 
    @search.search 
    end 

end 

class Method 

    def search 
     @driver.find_element(:id, "gbqfq").clear 
     @driver.find_element(:id, "gbqfq").send_keys "this is a test" 
     @driver.find_element(:id, "gbqfb").click 
     @driver.find_element(:id, "gbqfb").click 
    end 

end 

我改變了類名：

require "test/unit" 
require "selenium-webdriver" 
require "json" 
require "time" 


class Google < Test::Unit::TestCase 

    def setup 
    @driver = Selenium::WebDriver.for :firefox 
    @base_url = "https://www.google.com/" 
    @accept_next_alert = true 
    @driver.manage.timeouts.implicit_wait = 30 
    @verification_errors = [] 
    @search = Suber.new() 
    end 

    def teardown 
    @driver.quit 
    assert_equal [], @verification_errors 
    end 

    def test_google 
    @driver.get(@base_url + "/") 
    @search.search 
    end 

end 


class Suber 


    def search 
     @driver.find_element(:id, "gbqfq").clear 
     @driver.find_element(:id, "gbqfq").send_keys "this is a test" 
     @driver.find_element(:id, "gbqfb").click 
     @driver.find_element(:id, "gbqfb").click 
    end 


end 

現在我不完全知道如何對付我的「蘇伯」類中設置@driver。我以爲它只是工作，但它拋出：

NoMethodError：未定義的方法find_element' for nil:NilClass google.rb:37:in搜索 ' google.rb：25：在`test_google'

：/

Answer 1

根據您的編輯做以下：

require "test/unit" 
require "selenium-webdriver" 
require "json" 
require "time" 

module Suber 


    def search 
     @driver.find_element(:id, "gbqfq").clear 
     @driver.find_element(:id, "gbqfq").send_keys "this is a test" 
     @driver.find_element(:id, "gbqfb").click 
     @driver.find_element(:id, "gbqfb").click 
    end 


end 

class Google < Test::Unit::TestCase 

    include Suber 

    def setup 
    @driver = Selenium::WebDriver.for :firefox 
    @base_url = "https://www.google.com/" 
    @accept_next_alert = true 
    @driver.manage.timeouts.implicit_wait = 30 
    @verification_errors = [] 
    #@search = Suber.new() 
    end 

    def teardown 
    @driver.quit 
    assert_equal [], @verification_errors 
    end 

    def test_google 
    @driver.get(@base_url + "/") 
    search 
    end 

end 

Answer 2

方法是Ruby中內置的類（http://ruby-doc.org/core-2.0/Method.html）您必須將類重命名爲其他類。

Answer 3

這真的不是一個解決方案，但如果你有時間，那麼Metaprogramming Ruby這本書會詳細講解課程。