RSpec 学生练习失败

Question

我目前正在做 TestFirst.org 的 Ruby 练习。这是一个通过让您构建代码以通过测试来教授 Ruby 的程序。我提到这个是想说我没有写这个 RSpec 代码，但很高兴知道如何修复它。

RSpec:

# Book Titles in English obey some strange capitalization rules. For example,
# "and" is lowercase in "War and Peace". This test attempts to make sense of 
# some of those rules.

require 'book'

describe "Book" do
  before do
    @book = Book.new
  end

  describe 'title' do
    it 'should capitalize the first letter' do
      @book.title = "inferno"
      @book.title.should == "Inferno"
    end

    it 'should capitalize every word' do
      @book.title = "stuart little"
      @book.title.should == "Stuart Little"
    end

    describe 'should capitalize every word except...' do
      describe 'articles' do
        specify 'the' do
          @book.title = "alexander the great"
          @book.title.should == "Alexander the Great"
        end

        specify 'a' do
          @book.title = "to kill a mockingbird"
          @book.title.should == "To Kill a Mockingbird"
        end

        specify 'an' do
          @book.title = "to eat an apple a day"
          @book.title.should == "To Eat an Apple a Day"
        end
      end

      specify 'conjunctions' do
        @book.title = "war and peace"
        @book.title.should == "War and Peace"
      end

      specify 'prepositions' do
        @book.title = "love in the time of cholera"
        @book.title.should == "Love in the Time of Cholera"
      end
    end

    describe 'should always capitalize...' do
      specify 'I' do
        @book.title = "what i wish i knew when i was 20"
        @book.title.should == "What I Wish I Knew When I Was 20"
      end

      specify 'the first word' do
        @book.title = "the man in the iron mask"
        @book.title.should == "The Man in the Iron Mask"
      end
    end
  end
end

在它分析我为它编写的测试代码之前，它给出了这个错误：

C:\Users\Computer\Documents\learn_ruby_book_titles>rake
(in C:/Users/Computer/Documents/learn_ruby)
You must use ANSICON 1.31 or later (http://adoxa.3eeweb.com/ansicon/) to use colour on Windows

Book
  title
    should capitalize the first letter (FAILED - 1)

Failures:

  1) Book title should capitalize the first letter
     Failure/Error: @book = Book.new
     NameError:
       uninitialized constant Book
     # ./08_book_titles/book_titles_spec.rb:20:in `block (2 levels) in <top (required)>'

Finished in 0 seconds
1 example, 1 failure

Failed examples:

rspec ./08_book_titles/book_titles_spec.rb:24 # Book title should capitalize the first letter
C:/RailsInstaller/Ruby2.1.0/bin/ruby.exe -S rspec C:/Users/Computer/Documents/learn_ruby/08_book_titles/book_titles_spec
.rb -IC:/Users/Computer/Documents/learn_ruby/08_book_titles -IC:/Users/Computer/Documents/learn_ruby/08_book_titles/solu
tion -f documentation -r ./rspec_config failed

我尝试用谷歌搜索错误消息，但没有成功。我才刚刚开始学习，我不具备解决此 RSpec 代码问题的专业知识。对于有需要的学生，我们将不胜感激。

编辑：

我是个白痴，不明白他们问我什么。那就继续吧。

Answer 1

您需要创建一个新的 Class 名为 Book。

您可以在名为 book.rb 的同一目录中创建一个新文件，或者在测试套件的顶部添加以下行。

class Book
end

Answer 2

您应该包含 book.rb 文件。您正在寻找的解决方案是：

正如你在book_titles_spec.rb中看到的，有一行代码：

@book = Book.new 所以这意味着您需要创建一个名为 Book
的 class
class 本书结束
然后在第一个测试中，它调用了没有参数的方法 title，所以这意味着你需要创建一个名为 title 的 attr_accessor 所以您可以将它用作您将在标题方法中使用的实例变量

attr_accessor:标题
现在只是通过测试的逻辑，因此您可以创建一个标题方法并使用@title 变量来完成魔术

定义标题 @title.split(' ') #通过测试的所有逻辑 @你的答案结束

我认为这对Ruby的初学者来说是一个困难的测试，所以这个答案可以帮助他们开始解决这个问题。

RSpec 学生练习失败

RSpec is failing for a student exercise

ruby

rspec