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RSpec allows a method not to generate a variable

I am trying to create a test for my helper method bill_total . The let method does not generate bill1 and bill2 .

 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

Error:

  /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]
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2 answers

Names defined in let statements are available only in before and it blocks, and not at the outer level of describe blocks. If you replace your internal describe with it , the names will be available. In addition, the names are not actually variables, but helper methods .

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You need to write your examples inside the it blocks, not describe :

 it "#bill_total" do bill1.amount = 1.00 bill2.amount = 1.00 expect(bills_helper.bill_total).to eq(2.00) end
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Source: https://habr.com/ru/post/954114/

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