This library was created to test the presence of elements in a rendered component using their data-test attributes, data-test attribute values or a combination of both. This library relies on the parsing abilities of Floki.
For example, if we wanted to test the existence of this button in a rendered page
We can use the following
assert we_see_attribute(html, "confirmation button", content: "Confirm")
We can also expect a certain amount of elements by using
assert we_see_exactly(html, 2, attribute: ""confirmation button", content: "Confirm")
This is great for testing conditional components and conditionally rendered elements on a page.
For more info, you can read the docs