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RSpec - Ruby testing (stand alone example / no cucumber)

RSpec can be used as a stand alone test environment for your Ruby program, as well as being used within Gherkin and Cucumber (see [here] for some details of that).

Installation as a Ruby Gem (you may need admin permissions):
  gem install rspec

Run your program under the new executable rspec ... on Linux / Unix / OS X start your file with
  #!/usr/bin/env rspec

Load the code to be tested - perhaps this class
  class StringChanger
    def reverse_and_save(string_to_reverse)
      string_to_reverse.reverse
    end
  end


and describe the test

  describe StringChanger do
    it 'reverses strings' do
      string_changer = StringChanger.new
      reversed_string = string_changer.reverse_and_save('example from Well House')
      expect(reversed_string).to eq 'esuoH lleW morf elpmaxe'
      end
  end


run it

  WomanWithCat:rspec grahamellis$ ./rs001
  .
  
  Finished in 0.00073 seconds (files took 0.09143 seconds to load)
  1 example, 0 failures
  
  WomanWithCat:rspec grahamellis$


and see that the tests have passed.

Next lessons - multiple tests, what happens when a test fails, other tests ...
(written 2015-10-17)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
R211 - Ruby - RSpec
  [4681] Ruby testing with RSpec - a new example - (2016-05-19)
  [4579] Behaviour and test driven development in Ruby using RSpec - (2015-11-21)
  [4386] Guide exercise to help you learn Gherkin, Cucumber and Rspec - (2015-01-06)
  [4383] Improved test in Cucumber with RSpec - (2015-01-03)


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Method, Class, Module, Package - how to they relate in Python?
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Saturday morning at Well House Manor
The principle of mocking - and the Python Mock package
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