Coverage report formats (terminal, HTML, XML) in PyTest - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of pytest coverage terminal report

What is the output of the following pytest coverage command when run in a terminal?

pytest --cov=my_module --cov-report=term

A An XML file named coverage.xml is created in the current directory.

B An HTML file named index.html is generated in a directory named htmlcov.

C A summary table printed in the terminal showing coverage percentages per file and total coverage.

D No output is shown; coverage data is only saved internally.

💡 Hint

Think about what the 'term' option means for coverage reports.

The 'term' coverage report option prints a coverage summary directly in the terminal after tests run.

❓ Predict Output

intermediate

Result of pytest coverage HTML report generation

After running the command below, what will you find in your project directory?

pytest --cov=my_module --cov-report=html

A A coverage.xml file with coverage data in XML format.

B No files or directories are created; output is only shown in terminal.

C A coverage.txt file with plain text coverage summary.

D A directory named htmlcov containing an index.html file and other files for viewing coverage in a browser.

💡 Hint

HTML reports are meant to be viewed in a web browser.

The 'html' report option creates a folder named htmlcov with an index.html file and related assets for a detailed coverage report.

❓ Predict Output

advanced

Effect of pytest coverage XML report option

What is the effect of running this command?

pytest --cov=my_module --cov-report=xml

A Creates an htmlcov directory with HTML coverage report files.

B Generates a coverage.xml file in the current directory containing coverage data in XML format.

C Does not generate any coverage report files.

D Prints coverage summary in the terminal only.

💡 Hint

XML reports are used for integration with other tools.

The 'xml' report option creates a coverage.xml file with coverage data in XML format for tools like CI servers.

🧠 Conceptual

advanced

Choosing coverage report formats for different needs

Which coverage report format is best suited for viewing detailed coverage information interactively in a web browser?

A HTML report format

B Terminal report format

C XML report format

D No report format

💡 Hint

Think about which format uses web pages.

HTML reports provide detailed, interactive coverage views in a browser, unlike terminal or XML formats.

❓ framework

expert

Combining multiple coverage report formats in pytest

Which command correctly generates both terminal and XML coverage reports in one pytest run?

A pytest --cov=my_module --cov-report=term,xml

B pytest --cov=my_module --cov-report=term --cov-report=xml

C pytest --cov=my_module --cov-report=term xml

D pytest --cov=my_module --cov-report=term+xml

💡 Hint

Multiple reports are separated by commas without spaces.

To generate multiple coverage reports, list them separated by commas with no spaces after --cov-report.