pytest-html

pytest-html is a plugin for pytest that generates a HTML report for the test results.

Requirements

You will need the following prerequisites in order to use pytest-html:

Python 2.7, 3.6, PyPy, or PyPy3

Installation

To install pytest-html:

$ pip install pytest-html

Then run your tests with:

$ pytest --html=report.html

ANSI codes

Note that ANSI code support depends on the ansi2html package. Due to the use of a less permissive license, this package is not included as a dependency. If you have this package installed, then ANSI codes will be converted to HTML in your report.

Creating a self-contained report

In order to respect the Content Security Policy (CSP), several assets such as CSS and images are stored separately by default. You can alternatively create a self-contained report, which can be more convenient when sharing your results. This can be done in the following way:

$ pytest --html=report.html --self-contained-html

Images added as files or links are going to be linked as external resources, meaning that the standalone report HTML-file may not display these images as expected.

The plugin will issue a warning when adding files or links to the standalone report.

Enhancing reports

Appearance

Custom CSS (Cascasding Style Sheets) can be passed on the command line using the --css option. These will be applied in the order specified, and can be used to change the appearance of the report.

$ pytest --html=report.html --css=highcontrast.css --css=accessible.css

Environment

The Environment section is provided by the pytest-metadata, plugin, and can be accessed via the pytest_configure hook:

def pytest_configure(config):
    config._metadata['foo'] = 'bar'

The generated table will be sorted alphabetically unless the metadata is a collections.OrderedDict.

Additional summary information

You can edit the Summary section by using the pytest_html_results_summary hook:

import pytest
from py.xml import html

@pytest.mark.optionalhook
def pytest_html_results_summary(prefix, summary, postfix):
    prefix.extend([html.p("foo: bar")])

Extra content

You can add details to the HTML reports by creating an 'extra' list on the report object. Here are the types of extra content that can be added:

Type	Example
Raw HTML	`extra.html('<div>Additional HTML</div>')`
JSON	`extra.json({'name': 'pytest'})`
Plain text	`extra.text('Add some simple Text')`
URL	`extra.url('http://www.example.com/')`
Image	`extra.image(image, mime_type='image/gif', extension='gif')`
Image	`extra.image('/path/to/file.png')`
Image	`extra.image('http://some_image.png')`

Note: When adding an image from file, the path can be either absolute or relative.

Note: When using --self-contained-html, images added as files or links may not work as expected, see section Creating a self-contained report for more info.

There are also convenient types for several image formats:

Image format	Example
PNG	`extra.png(image)`
JPEG	`extra.jpg(image)`
SVG	`extra.svg(image)`

The following example adds the various types of extras using a pytest_runtest_makereport hook, which can be implemented in a plugin or conftest.py file:

import pytest
@pytest.mark.hookwrapper
def pytest_runtest_makereport(item, call):
    pytest_html = item.config.pluginmanager.getplugin('html')
    outcome = yield
    report = outcome.get_result()
    extra = getattr(report, 'extra', [])
    if report.when == 'call':
        # always add url to report
        extra.append(pytest_html.extras.url('http://www.example.com/'))
        xfail = hasattr(report, 'wasxfail')
        if (report.skipped and xfail) or (report.failed and not xfail):
            # only add additional html on failure
            extra.append(pytest_html.extras.html('<div>Additional HTML</div>'))
        report.extra = extra

You can also specify the name argument for all types other than html which will change the title of the created hyper link:

extra.append(pytest_html.extras.text('some string', name='Different title'))

Modifying the results table

You can modify the columns by implementing custom hooks for the header and rows. The following example conftest.py adds a description column with the test function docstring, adds a sortable time column, and removes the links column:

from datetime import datetime
from py.xml import html
import pytest

@pytest.mark.optionalhook
def pytest_html_results_table_header(cells):
    cells.insert(2, html.th('Description'))
    cells.insert(1, html.th('Time', class_='sortable time', col='time'))
    cells.pop()

@pytest.mark.optionalhook
def pytest_html_results_table_row(report, cells):
    cells.insert(2, html.td(report.description))
    cells.insert(1, html.td(datetime.utcnow(), class_='col-time'))
    cells.pop()

@pytest.mark.hookwrapper
def pytest_runtest_makereport(item, call):
    outcome = yield
    report = outcome.get_result()
    report.description = str(item.function.__doc__)

You can also remove results by implementing the pytest_html_results_table_row hook and removing all cells. The following example removes all passed results from the report:

import pytest

@pytest.mark.optionalhook
def pytest_html_results_table_row(report, cells):
    if report.passed:
      del cells[:]

The log output and additional HTML can be modified by implementing the pytest_html_results_html hook. The following example replaces all additional HTML and log output with a notice that the log is empty:

import pytest

@pytest.mark.optionalhook
def pytest_html_results_table_html(report, data):
    if report.passed:
        del data[:]
        data.append(html.div('No log output captured.', class_='empty log'))

Display options

By default, all rows in the Results table will be expanded except those that have Passed.

This behavior can be customized with a query parameter: ?collapsed=Passed,XFailed,Skipped.

Screenshots

Contributing

Fork the repository and submit PRs with bug fixes and enhancements, contributions are very welcome.

Tests can be run locally with tox, for example to execute tests for Python 2.7 and 3.6 execute:

tox -e py27,py36

jknotts/pytest-html