Phoenix.LiveViewTest.render_upload

You're seeing just the function render_upload, go back to Phoenix.LiveViewTest module for more information.
Link to this function

render_upload(upload, entry_name, percent \\ 100)

View Source

Performs an upload of a file input and renders the result.

See file_input/4 for details on building a file input.

Examples

Given the following LiveView template:

<%= for entry <- @uploads.avatar.entries %>
    <%=entry.name %>: <%= entry.progress %>%
<% end %>

Your test case can assert the uploaded content:

avatar = file_input(lv, "#my-form-id", :avatar, [
  %{
    last_modified: 1_594_171_879_000,
    name: "myfile.jpeg",
    content: File.read!("myfile.jpg"),
    size: 1_396_009,
    type: "image/jpeg"
  }
])

assert render_upload(avatar, "foo.jpeg") =~ "100%"

By default, the entire file is chunked to the server, but an optional percentage to chunk can be passed to test chunk-by-chunk uploads:

assert render_upload(avatar, "foo.jpeg", 49) =~ "49%"
assert render_upload(avatar, "foo.jpeg", 51) =~ "100%"