Question

我正在进行一项rails分配，它需要模型中的remove_entry方法和remove_entry的工作测试。我在测试通过时遇到了一些麻烦。有没有人对如何在addressbook.rb中定义remove_entry方法以及如何在entry_spec.rb中编写测试有任何建议？

Entry.rb：

#Load a library called entry.rb
require_relative "entry.rb"

class AddressBook
  attr_accessor :entries

  def initialize
    @entries = []
  end

  def add_entry(name, phone, email)
    #Create a variable index to store
    index = 0
    @entries.each do |entry|
      if name < entry.name
        break
      end
      index += 1
    end

    @entries.insert(index,Entry.new(name,phone,email))
  end

  def remove_entry(entry)
    @entries.destroy(entry)
  end
end

地址簿规范：

RSpec.describe AddressBook do
  context "attributes" do
    it "should respond to entries" do
      book = AddressBook.new
      expect(book).to respond_to(:entries)
    end
    it "should initialize entries as an array" do
       book = AddressBook.new
       expect(book.entries).to be_a(Array)
     end

     it "should initialize entries as empty" do
       book = AddressBook.new
       expect(book.entries.size).to eq 0
     end
  end

  context ".add_entry" do
    it "adds only one entry to the address book" do
      book = AddressBook.new
      book.add_entry('Ada Lovelace', '010.012.1815', 'augusta.king@lovelace.com')

      expect(book.entries.size).to eq 1
    end

    it "adds the correct information to entries" do
       book = AddressBook.new
       book.add_entry('Ada Lovelace', '010.012.1815', 'augusta.king@lovelace.com')
       new_entry = book.entries[0]

       expect(new_entry.name).to eq 'Ada Lovelace'
       expect(new_entry.phone_number).to eq '010.012.1815'
       expect(new_entry.email).to eq 'augusta.king@lovelace.com'
    end
  end

  context ".remove_entry" do
    it "deletes one entry of the address book" do
      book.entries.delete_entry(entry)
      expect(book.entries.size).to eq 0
    end
  end
end

我也有一个entry.rb和entry_spec.rb，但我相信他们删除的方法会在地址簿中，对吗？由于该条目正在从该模型中删除。任何澄清将不胜感激。

Answer 1

您是remove_entry方法应该在AddressBook，因为它正在修改地址簿的entries集合（以及Entry} class应该对AddressBook或其内部结构一无所知。

但是，由于您的add_entry方法未公开Entry类，您希望remove_entry以相同的方式工作，或许通过电子邮件查找条目（哪个应该是唯一的，而不是可能不唯一的名称。所以你可以这样做：

def remove_entry(email)
  @entries.delete_if {|entry| entry.email == email}
end

要测试此方法，您可以执行以下操作：

context ".remove_entry" do
  it "deletes one entry of the address book" do
    book = AddressBook.new
    book.add_entry('Ada Lovelace', '010.012.1815', 'augusta.king@lovelace.com')

    book.delete_entry('augusta.king@lovelace.com')
    expect(book.entries.size).to eq(0)
  end
end

如何使用模型函数删除条目？

1 个答案: