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ExUnit vs comparison of testing frameworks
What are the differences between ExUnit and

Programming language




Unit Testing

End-to-End Testing, Intergration Testing, Unit Testing

General info

Unit testing framework for Elixir.

Elixir comes bundled with ExUnit allowing developers to use all elixir features without compromising unit tests. It uses a TDD workflow, and shows one message per test

Cypress users are typically developers or QA engineers building web applications using modern JavaScript frameworks. This is the top tier UI automation framework which outsmarts Selenium based frameworks in most of the aspects!

Cypress enables you to write all types of tests: 1. End-to-end tests; 2. Integration tests; 3. Unit tests; 4. Cypress can test anything that runs in a browser; Apart from that Cypress provides the Dashboard facility for CI/CD
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.


xUnit has the ExUnit framework as an instance


Allows testing code execution on the client, such as a web browser


Front-end code can be tested using ExUnit, Phoenix front-end framework for Elixir uses ExUnit as the default testing framework


This is the primary goal of Cypress, it tests anything that runs in a browser and works to build great user experience that is it tests the applications flow from beginning to end from a user's perspective. It is built to handle modern JavaScript frameworks especially well and also works equally well on older server rendered pages or applications
Allows testing the bahovior of a server-side code


ExUnit tests backend code. Typically Unit tests will be written not to interact with the browser, but with ExUnit you can test whichever part of your application


Although Cypress is not a general automation framework, nor is it a unit testing framework for your back-end services, It can test back-end behaviours for example using cy.task() command which provides a way for running Node code, so you can take actions necessary for your tests outside of the scope of Cypress
Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test


ExUnit has a library called ExUnitFixtures fixtures are functions that are run before a test is run to setup the test environment or provide the test with data


Cypress has inbuilt fixtures capabilities or example using the command 'cy.fixture(filePath)' loads a fixed set of data located in a file
Group fixtures
Allows defining a fixed, specific states of data for a group of tests (group-fixtures). This ensures specific environment for a given group of tests.


Group fixures are possible with this library


Cypress can create group fixtures using the 'cy.fixture' command
Supports data generators for tests. Data generators generate input data for test. The test is then run for each input data produced in this way.


Generators are found in the StreamData module


Licence type governing the use and redistribution of the software

Apache License 2.0

MIT License

Mocks are objects that simulate the behavior of real objects. Using mocks allows testing some part of the code in isolation (with other parts mocked when needed)


Mocks are available for use with ExUnit through the Mock module. Also available through the use of third party libraries like mecktest


Cypress comes built in with the ability to stub and spy with cy.stub(), cy.spy(), It also automatically bundles 'sinon', 'lolex' and 'sinon-chai' which all work to give Cypress mocking capabilities
Allows organizing tests in groups


Using the 'describe' function which goups tests together. Every describe block recieves a name which is used as a prefix for upcoming tests


Cypress allows you to configure tests into groups however there is no way currently to run the groups
Other useful information about the testing framework