Yes, there’s Pages: pages | Hex

I’m the coauthor and have used it on multiple projects. It works with LiveView and controllers.

defmodule Web.HomeLiveTest do
  use Test.ConnCase, async: true
  
  test "has login button", %{conn: conn} do
    conn
    |> Pages.new()
    |> Test.Pages.HomePage.assert_here()
    |> Test.Pages.HomePage.click_login_link()
    |> Test.Pages.LoginPage.assert_here()
  end
end

Here’s an example page, using HtmlQuery for finding things in the HTML, and Moar.Assertions for a pipe-able assertion function with some handy options.

defmodule Test.Pages.HomePage do
  import Moar.Assertions
  alias HtmlQuery, as: Hq

  @spec assert_here(Pages.Driver.t()) :: Pages.Driver.t()
  def assert_here(%Pages.Driver.LiveView{} = page) do
    page
    |> Hq.find("[data-page]")
    |> Hq.attr("data-page")
    |> assert_eq("home", returning: page)
  end

  @spec click_login_link(Pages.Driver.t()) :: Pages.Driver.t()
  def click_login_link(page),
    do: page |> Pages.click("Log In", test_role: "login-link")

  @spec visit(Pages.Driver.t()) :: Pages.Driver.t()
  def visit(page),
    do: page |> Pages.visit("/")
end