在RSpec中編寫測試用例時出錯

Question

嗨，我正在學習使用Rspec在ruby中編寫測試用例，並且正在關注此鏈接 。 因此，在測試以下情況時

 require 'spec_helper'

describe "Library object" do
before :all do
    lib_obj = [
        Book.new ("Javascript: The Good Parts", "Douglas Crockford", :development),
        Book.new ("Designing with Web Standards", "Jeffrey Zeldman", :design),
        Book.new ("Don't make me Think", "Steve krug", :usability),
        Book.new ("Javascript Patterns", "Stoyam Stefanov", :development),
        Book.new ("Responsive Web Design", "Ethan Marcotte", :design)
    ]       
    File.open "books.yml", "w" do |f|
        f.write YAML::dump lib_obj
    end
end

before :each do
    @lib = Library.new "books.yml"
end

describe "#new" do
    context "with no parameters" do
        it "has no books" do
            lib = Library.new
            lib.should have(0).books
        end
    end
    context "with a yaml file paramater" do
        it "has five books" do
            @lib.should have(5).books
        end
    end
end

it "returns all the books in a given category" do
    @lib.get_books_in_category(:development).length.should == 2
end

it "accepts new books" do
    @lib.add_book(Book.new("Designing for the Web", "Mark Boulton", :design))
    @lib.get_book("Designing for the Web").should be_an_instance_of Book
end

it "saves the library" do
    books = @lib.books.map { |book| book.title  }
    @lib.save
    lib2 = Library.new "books.yml"
    books2 = lib2.books.map { |book| book.title  }
    books.should eql books2
end

結束

我收到以下錯誤：

syntax error, unexpected ',', expecting keyword_end
 Book.new ("Don't make me Think", "Steve krug", :usability),

這代表數組lib_obj中的所有條目。 我正在使用ruby 1.9.3和rails 3.2.6

請幫助

Answer 1

在方法調用和參數列表之間有多余的空間。

Book.new (...)

...與以下內容不同：

Book.new(...)

Answer 2

我看到您正在為新的Book類傳遞字符串值，盡管您沒有指定要綁定到的屬性。

嘗試：

new_book = Book.new(:name => "string", :cover_image => "string") etc.

還請確保正確設置了模型驗證和mass_assignment安全性，但是您的測試將很快將您引導到該位置。