[Feature]: Implement hasAttribute(String)

🚀 Feature Request

I want to check if a locator has an attribute.
I think that's what toHaveAttribute(name) is doing in typescript.

I tried to:
assertThat(getInputLocator()).not().hasAttribute("min", ""); // that will forbid empty min but not a filled value
or
assertThat(getInputLocator()).not().hasAttribute("min", Pattern.compile(".*"));

And the result is:

• unexpected value "undefined"

With a new API hasAttribute(String attributeName), I would be able to do:
assertThat(getInputLocator()).not().hasAttribute("min");

That will test if there is an attribute min.

Example

import com.microsoft.playwright.assertions.PlaywrightAssertions;
import java.util.regex.Pattern;

Locator el = page.locator("#my-el");

// Assert the attribute is NOT present:
PlaywrightAssertions.assertThat(el)
    .not()
    .hasAttribute("min", Pattern.compile(".*"));

Motivation

The only workaround I found is to get the attribute and asserts it's null. But it's not the good practice.

Having that will help to check to the absence of a attribute.

Commencez par le point d’entrée des assertions Java montré dans l’issue, PlaywrightAssertions.assertThat, et examinez les surcharges existantes de hasAttribute. Confirmez comment l’absence d’un attribut du locator est représentée et ajoutez la forme demandée qui n’accepte qu’un String, afin que la présence et l’absence puissent être vérifiées sans valeur ; le travail est terminé lorsque l’API prend en charge l’utilisation montrée de .not().hasAttribute("min").