liveBook · Manning

Teardown function

As explained in Unit Testing Principles, Practices, and Patterns

The test phase that performs cleanup after execution and verification, such as deleting files or closing external connections.

A teardown function is the test phase that cleans up after execution and verification, such as deleting files or closing external connections. It belongs alongside Arrange, Act, and Assert as part of a test’s structure. section 3.1

Keep teardown understandable and proportional to the test. As with other test sections, excessive setup or cleanup can make a test harder to read and may signal responsibilities that should be extracted or simplified. section 3.1

How Unit Testing Principles, Practices, and Patterns covers it

How deep it goes
Defines teardown as a cleanup section but supplies no concrete sizing rule beyond discussing section size.
Examples
Uses deleting files and closing external connections as examples of teardown work.
What it assumes
Assumes familiarity with Arrange, Act, and Assert as the basic test structure.
How it connects
Connects teardown with the Arrange–Act–Assert pattern and test readability.
Cover of Unit Testing Principles, Practices, and Patterns
liveBookmanning.com
Read Unit Testing Principles, Practices, and Patterns on liveBook Get the book at manning.com

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Unit Testing Principles, Practices, and Patterns. The section links point to the parts of the book it draws on.