RSpec and ChefSpec
As with most testing libraries, RSpec enables you to construct a set of expectations, build objects and interact with them, and verify that the expectations have been met. For example, one expects that when a user logs in to the system, a database record is created, tracking their login history. However, to keep tests running quickly, the application should not make an actual database call; in place of the actual database call, a mock method should be used. Here, our mock method will catch the message in the database in order to verify that it was going to be sent; then, it will return an expected result so that the code does not know the database is not really there.
Tip
Mock methods are methods that are used to replace one call ...
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