[Feature] Add soft assertions

[heathiviesyncro]

It would be nice to get the soft assertions that are available in node to be available in python.

https://playwright.dev/docs/test-assertions#soft-assertions

Thank you

[vlado48]

Any idea how to implement this now? Try/Except with short timeout or is there a better way?

[aspenboy]

I am using pytest-check for soft assertions. Adds another dependency to the project, but it works great.

[jfp1992]

I am using pytest-check for soft assertions. Adds another dependency to the project, but it works great.

I tried this one but couldn't get it working with expect(). Do you have an example of this?

Also +1 for soft assertions to be implemented in python as well as typescript.

[aspenboy]

I tried this one but couldn't get it working with expect(). Do you have an example of this?

It's a separate assertion mechanism, so you don't use it within expect(). Pretty nice examples are included on the github page: https://github.com/okken/pytest-check

Also - you can mix assertions in your tests, so it's fine to use assert, expect() and check().

[mbroton]

I agree, it would be really useful to have soft assertions in Python version of Playwright. Right now I'm using workarounds in some of my projects, similar to what was already mentioned above.

I spent some time exploring the code and came up with an approach that seems to work. Here’s an example of how it looks:

def test_foo(page: Page) -> None:
    # ...
    with soft_assertions() as expect:
        expect(page.locator("div")).to_have_text("foo")
        expect(page.locator("div")).to_have_text("bar")

expect in this example works just like a normal expect (works with pages, locators and api responses).

At first, I considered an expect.soft(...) approach like in Node, but I couldn’t find a solution that didn’t require a lot of changes.

Would love any feedback on this!

[Skn0tt]

Let's also try out implementing it via a fixture in our pytest integration.