RSpec and Cucumber are two examples of testing frameworks. Traditional UNIT Testing is used by RSpec. It refers to the practice of testing a section of an application separately from the REMAINING part of the application. As a result, your model performs what it's expected to do, the controller does what it's expected to do, and so on. Both RSpec and Cucumber are used for Acceptance Testing, also known as ATDD, BDD, and other terms.
The following are the major differences between RSpec and Cucumber:-

• The fundamental distinction between RSpec and Cucumber is the element of business readability.
• Unit testing is the primary purpose of RSpec. Cucumber, on the other hand, is primarily utilized in behavior-driven development. It can be used for System and Integration Testing as well.
• Cucumber separates the specs or features from the test code, allowing product owners to provide or review the specification without having to walk through the code.
• RSpec INCLUDES a similar method, but instead of ELABORATING a step with a Describe, it executes the statement using the business specification. This method is easier for developers to use, but a little more difficult for non-technical people.