Feature request: accept a list of strings in assert_response(html: ...)

[jaimeiniesta]

Hello!

I want to test a blog that paginates posts, showing 5 per page. I'd like to get the post list, and check that I can find the post title of the first 10 posts, something like this:

test "Blog post pagination", %{conn: conn} do
  get(conn, "/blog")
  |> assert_response(status, 200, path: "/blog", html: "Listing recent posts")
  |> assert_response(html: "Post title 1")
  |> assert_response(html: "Post title 2")
  |> assert_response(html: "Post title 3")
  |> assert_response(html: "Post title 4")
  |> assert_response(html: "Post title 5")
end

Instead of this, it would be great if we could pass a list of strings to :html, so we could do this:

test "Blog post pagination", %{conn: conn, posts: posts} do
  get(conn, "/blog")
  |> assert_response(status, 200, path: "/blog", html: "Listing recent posts")
  |> assert_response(html: Enum.map(posts, & &1.title))
end

Or this, check for different strings explicitly:

test "Pricing plans", %{conn: conn} do
  get(conn, "/pricing")
  |> assert_response(status, 200,
    path: "/pricing",
    html: [
      "Pricing",
      "Starter plan",
      "Pro plan",
      "Enterprise plan"
    ]
  )
end

Same for refute_response.

What do you think?

[florish]

@jaimeiniesta Hi, just a quick tip to achieve almost the same with the current features: use html: multiple times. This is explicitly allowed per the documentation:

Conditions can be used multiple times within a single call to assert_response. This can be useful to look for multiple text strings in the body.

Your first example then looks like this:

test "Blog post pagination", %{conn: conn} do
  get(conn, "/blog")
  |> assert_response(
    status: 200, 
    path: "/blog", 
    html: "Listing recent posts",
    html: "Post title 1",
    html: "Post title 2",
    html: "Post title 3",
    html: "Post title 4",
    html: "Post title 5"
  )
end

Hope this helps!