Fatal编程技术网

Ruby on rails RSpec let方法不生成变量

ruby-on-rails ruby ruby-on-rails-4 rspec

Ruby on rails RSpec let方法不生成变量,ruby-on-rails,ruby,ruby-on-rails-4,rspec,Ruby On Rails,Ruby,Ruby On Rails 4,Rspec,我正在尝试为我的bill\u totalhelper方法创建一个测试。let方法没有生成bill1和bill2变量 describe BillsHelper do let(:bill1) { Bill.create(name: 'Bill 1', amount: 1.00) } let(:bill2) { Bill.create(name: 'Bill 2', amount: 1.00) } describe "#bill_total" do bill1.amount =

我正在尝试为我的
bill\u total
helper方法创建一个测试。let方法没有生成
bill1
和
bill2
变量

describe BillsHelper do
  let(:bill1) { Bill.create(name: 'Bill 1', amount: 1.00) }
  let(:bill2) { Bill.create(name: 'Bill 2', amount: 1.00) }

  describe "#bill_total" do
    bill1.amount = 1.00
    bill2.amount = 1.00

    expect(bills_helper.bill_total).to eq(2.00)
  end
end
错误：

    /Users/adrianleeelder/Documents/Developer_Resources/sites/bills_app/spec/helpers/bills_helper_spec.rb:18:in `block (2 levels) in <top (required)>': undefined local variable or method `bill1' for #<Class:0x007fb3c121b548> (NameError)
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in `module_eval'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in `subclass'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:228:in `describe'
    from /Users/adrianleeelder/Documents/Developer_Resources/sites/bills_app/spec/helpers/bills_helper_spec.rb:17:in `block in <top (required)>'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in `module_eval'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in `subclass'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:228:in `describe'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/dsl.rb:18:in `describe'
    from /Users/adrianleeelder/Documents/Developer_Resources/sites/bills_app/spec/helpers/bills_helper_spec.rb:13:in `<top (required)>'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `block in load_spec_files'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `each'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load_spec_files'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:in `run'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:80:in `run'
    from /Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in `block in autorun'
[Finished in 2.4s with exit code 1]

/Users/adrianleeelder/Documents/Developer\u Resources/sites/bills\u app/spec/helpers/bills\u helper\u spec.rb:18:in'block（2 levels）in'：未定义的局部变量或方法'bill1'（NameError）
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in'module_eval'
来自/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:“子类”中
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:228:在“描述”中
from/Users/adrianleeelder/Documents/Developer\u Resources/sites/bills\u app/spec/helpers/bills\u helper\u spec.rb:17:in'block in'
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:in'module_eval'
来自/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:242:“子类”中
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/example_group.rb:228:在“描述”中
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/dsl.rb:18:在“描述”中
from/Users/adrianleeelder/Documents/Developer\u Resources/sites/bills\u app/spec/helpers/bills\u helper\u spec.rb:13:in`'
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in'load'
来自/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:“加载规范文件中的块”
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in'each'
来自/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:“加载规范文件”
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:在“运行”中
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:80:in'run'
from/Users/adrianleeelder/.rvm/gems/ruby-2.0.0-p0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in“自动运行中的块”
[在2.4s中完成，退出代码为1]
在
let
语句中定义的名称仅在
before
和
it
块中可用，而不在
description
块的外部级别中可用。如果将内部的
description
替换为
it
，则可以访问这些名称。此外，名称实际上不是变量，而是
辅助方法

您需要在
it
块中编写示例，而不是
描述
块：

it "#bill_total" do
  bill1.amount = 1.00
  bill2.amount = 1.00

  expect(bills_helper.bill_total).to eq(2.00)
end