Now we will create add within the calculator.rb file and add the following line class Calculator spec/calculator_spec.rb:7 # Calculator#add returns the sum of two numbers spec/calculator_spec.rb:9:in `block (3 levels) in 'įinished in 0.00453 seconds (files took 0.1237 seconds to load) Now we will run the test it will show the NoMethodError like following, Fġ) Calculator#add returns the sum of two numbersįailure/Error: expect(calculator.add(2, 3)).to eq(5) And require this file in c alculator_spec.rb file. From our project root we will create a lib/ folder, and inside, calculator.rb file. We will get the NameError because we don’t have a Calculator class. Failure/Error:įinished in 0.00003 seconds (files took 0.24257 seconds to load)Ġ examples, 0 failures, 1 error occurred outside of examples When we run the test we will get the following error, $ rspecĪn error occurred while loading. Now we will create the calculator_spec.rb file under the spec directory and add the following code, #spec/calculator_spec.rb describe Calculator doįor this tutorial, I am going to explain the simple application to find adding two numbers by writing a simple calculator function. This block is where our expectations of a method are expressed. it takes a string argument and passes the block. Next it keyword defines an individual example (test). It takes a class or a string as an argument and is passed a block (do/end). RSpec uses the words “ describe” and “ it” so we can express concepts like a conversation. Now we can run the rspec test it will return the following output, $ rspecįinished in 0.00039 seconds (files took 0.12734 seconds to load)Ġ examples, 0 failures Structure of RSpec
It will create the following file under the project directory, create. Once the installation is completed now you can change the path to the project directory and run the rspec – -init it will initialize the rspec within the project.
Ruby rspec tutorial install#
Setting up RSpecįrom the terminal, you can run the following command to install the rspec, $ gem install rspec Not only that, it also produces output that reads like a story, or spec (“specification”), hence the name. In other words, it tries to make tests as readable as possible. RSpec does not put emphasis on how the application works but instead on how it behaves, in other words, what the application actually does. Tests written in RSpec focus on the “behavior” of an application being tested. RSpec is a Behaviour-Driven Development (BDD) tool. RSpec is a testing tool for Ruby programmers. Integration of technology into offerings by financial services companies to improve customer services and revenue, reduce costs, and Financial Governance.Įnhancing broadcast and streaming services with voice and visual search capabilities, enriching live sports broadcasting with deep insights. Integrated approach for innovative healthcare delivery across the value chain. Improving Healthcare through Technology and innovative solutions. Application and Infrastructure SecurityĮmpower startups at all stages with innovative solutions for real-world problems.
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