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excessibility

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Library for accessibility snapshot testing in Phoenix applications using axe-core and Playwright.

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excessibility lib source.ex
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lib/source.ex 

defprotocol Excessibility.Source do

  @doc """

  Converts a source (Conn, Session, LiveView View/Element) into an HTML string or parsed HTML tree.

  """

  @spec to_html(term()) :: binary() | tuple() | list(tuple())

  def to_html(source)

end



defimpl Excessibility.Source, for: Plug.Conn do

  def to_html(conn), do: Phoenix.ConnTest.html_response(conn, 200)

end



defimpl Excessibility.Source, for: Wallaby.Session do

  def to_html(session) do

    mod = Application.get_env(:excessibility, :browser_mod, Wallaby.Browser)

    mod.page_source(session)

  end

end



defimpl Excessibility.Source, for: Phoenix.LiveViewTest.View do

  def to_html(view) do

    mod = Application.get_env(:excessibility, :live_view_mod, Excessibility.LiveView)

    mod.render_tree(view)

  end

end



defimpl Excessibility.Source, for: Phoenix.LiveViewTest.Element do

  def to_html(element), do: Excessibility.LiveView.render_tree(element)

end