pytest Quick Start Guide

pytest-datadir

Often, tests need a supporting file, for example a CSV file containing data about comedy series, as we saw in the last chapter. pytest-datadir allows you to save files alongside your tests and easily access them from the tests in a safe manner.

Suppose you have a file structure such as this:

tests/    test_series.py

In addition to this, you have a series.csv file that you need to access from tests defined in test_series.py.

With pytest-datadir installed, all you need to do is to create a directory with the name of the test file in the same directory and put the file there:

tests/    test_series/        series.csv    test_series.py

The test_series directory and series.csv should be saved to your version-control system.

Now, tests in test_series.py ...