Phoenix.LiveViewTest.assert_patch

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

assert_patch(view, to, timeout \\ 100)

View Source

Asserts a live patch will happen within timeout.

It always returns :ok. To assert on the flash message, you can assert on the result of the rendered LiveView.

Examples

render_click(view, :event_that_triggers_patch)
assert_patch view, "/path"