Not only Expecta is a simple to use library that allows us to write highly readable code, but it can also be extended by the users with custom matchers. Let's see how to write a custom matcher to gain readability and reuse code in our test suites.
A test that express is intent clearly is arguably twice as effective as one that doesn't. Writing test in an xSpec style is a good first step to express behaviour clearly, and when matched with a matcher library such as Expecta the results are test that are easy to read and reason about