pytest-cov setup - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is pytest-cov used for?

pytest-cov is a plugin for pytest that measures code coverage during test runs. It shows which parts of your code were tested and which were not.

beginner

How do you install pytest-cov?

You install pytest-cov using pip with the command: pip install pytest-cov.

beginner

How do you run pytest with coverage reporting?

Run tests with coverage by using: pytest --cov=your_package_name. Replace your_package_name with the folder or module you want to check coverage for.

intermediate

What does the option --cov-report=term do?

It shows the coverage report directly in the terminal after tests finish, so you can quickly see which lines were covered.

intermediate

How can you generate an HTML coverage report with pytest-cov?

Use the command: pytest --cov=your_package_name --cov-report=html. This creates a folder named htmlcov with a detailed, easy-to-read coverage report you can open in a browser.

Which command installs pytest-cov?

A pytest --install-cov

B pip install pytest-cov

C pip install coverage

D pip install pytest

The correct command to install pytest-cov is pip install pytest-cov.

What does pytest --cov=myapp do?

A Runs tests only for the 'myapp' package

B Generates an HTML report only

C Runs tests and measures coverage for the 'myapp' package

D Installs coverage for 'myapp'

This command runs all tests and measures how much of 'myapp' code is covered by tests.

How do you see coverage results in the terminal?

A Coverage is shown by default

B Add <code>--show-coverage</code> option

C Add <code>--coverage-output=console</code> option

D Add <code>--cov-report=term</code> option

Use --cov-report=term to display coverage results in the terminal.

Where does pytest-cov put the HTML report by default?

A In the <code>htmlcov</code> folder

B In the root folder

C In the <code>coverage</code> folder

D In the <code>reports</code> folder

The HTML coverage report is saved in the htmlcov folder by default.

What must you specify to measure coverage for a specific package?

A The package name after <code>--cov=</code>

B The test file name

C The Python version

D The pytest version

You specify the package or folder name after --cov= to measure coverage for it.

Explain how to set up pytest-cov to measure and report test coverage for a Python project.

Think about installation, running tests, and viewing coverage.

Describe the benefits of using pytest-cov in your testing workflow.

Consider how coverage helps improve tests.