A pytest wrapper for snapshot testing with playwright
Project description
Pytest Plugin for Snapshot Testing with Playwright
This plugin enables snapshot testing in playwright like snapshotting screenshots of pages, element handles etc.
Installation
$ pip install pytest-playwright-snapshot
Usage
This plugin provides a assert_snapshot
fixture which is used to create snapshots and compare it.
Example:
def test_myapp(page, assert_snapshot):
page.goto("https://example.com")
assert_snapshot(page.screenshot(), "example.png")
Ths first time you run pytest, you will get error like
Failed: Snapshot not found, use --update-snapshots to create it.
As first you need to create golden snapshots to which this plugin will compare in future.
To create snapshots run:
$ pytest --update-snapshots
This will create snapshots for your tests, after that you can run the tests are usual and this will compare the snapshots.
There is threshold
kwarg only option which can be used to set the threshold for the comparison of the screenshots and by default it is 0.1
License
Apache 2.0 LICENSE
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