Writing a more advanced test

Now that you wrote your first simple test, we’ll try some more involved examples. First, let’s talk about some useful APIs and concepts:

As virt-tests evolved, a number of libraries were written to help test writers. Let’s see what some of them can do:

1. virttest.data_dir -> Has functions to get paths for resource files. One of the most used functions is data_dir.get_data_dir(), that returns the path shared/data, which helps you to get files.

from virttest import data_dir

What’s available upfront

Very frequently we may get values from the config set. All virt tests take 3 params:

test -> Test object params -> Dict with current test params env -> Environment file being used for the test job

You might pick any parameter using

variable_name = params.get("param_name", default_value)

You can update the parameters using