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Cucumber vs PHPUnit: What are the differences?
Introduction
Cucumber and PHPUnit are both widely used testing frameworks, but they have some key differences that set them apart.
Test Structure: Cucumber is primarily used for behavior-driven development (BDD) and follows a natural language syntax called Gherkin. Gherkin allows non-technical stakeholders to understand and contribute to the test scenarios. On the other hand, PHPUnit is a unit testing framework specifically designed for testing PHP code. It focuses on writing tests at the code level, without the natural language syntax.
Language and Platform: Cucumber is primarily used with Ruby, although there are implementations available for other programming languages as well. It is a tool that can be used across different platforms. PHPUnit, on the other hand, is specifically designed for testing PHP code and is tightly integrated with the PHP language and its ecosystem.
Test Types: Cucumber is designed for high-level acceptance and integration testing, often written from the perspective of end-users. It is mainly used for black-box testing, ensuring that the system behaves as expected. PHPUnit, on the other hand, focuses on unit testing, where individual units of code are tested in isolation. It allows developers to test functions, methods, and classes at a granular level.
Test Execution: In Cucumber, tests are written in plain English using Gherkin syntax, making them more readable and understandable by non-technical stakeholders. These tests are then executed using an automation tool, such as Selenium, that drives the application under test. PHPUnit tests, on the other hand, are written as code using the PHP language and are executed directly by the testing framework.
Test Coverage: Cucumber allows for a higher-level test coverage, ensuring that the application is working as expected from the end-user's perspective. It focuses on testing the application's behavior and functionality. PHPUnit, being a unit testing framework, allows for more detailed and granular test coverage at the code level. It helps in catching bugs and errors in individual units of code.
Integration with Development Workflow: Cucumber is often used in combination with other tools like continuous integration servers (e.g., Jenkins) and version control systems (e.g., Git) to automate the execution of tests and provide feedback throughout the development process. PHPUnit is tightly integrated with PHP development workflows and can be easily integrated into build systems and continuous integration processes specific to the PHP ecosystem.
In Summary, Cucumber is a behavior-driven testing framework primarily used for acceptance and integration testing, while PHPUnit is a unit testing framework specifically designed for PHP code. Cucumber focuses on high-level tests written in natural language, whereas PHPUnit is used for unit testing at the code level.
Pros of Cucumber
- Simple Syntax20
- Simple usage8
- Huge community5
- Nice report3
Pros of PHPUnit
- TDD Unit Testing5
- TDD Integration Testing2
- Software Quality2
- TDD Acceptance Testing2
- TDD Unit Testing1
- Unit Testing1
- The de facto standard for xUnit testing in PHP1
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Cons of Cucumber
Cons of PHPUnit
- Mocked services require more effort and understanding1