music_library/backlog/tasks/ml-182 - Analyze-and-plan-elimination-of-LiveViewTest-usage-in-favor-of-PhoenixTest.md

id, title, status, assignee, created_date, updated_date, labels, dependencies, references, documentation, modified_files, priority, ordinal

id	title	status	assignee	created_date	updated_date	labels	dependencies	references	documentation	modified_files	priority	ordinal
ML-182	Analyze and plan elimination of LiveViewTest usage in favor of PhoenixTest	Done		2026-05-14 21:40	2026-05-23 06:17	testing refactoring analysis		test/support/conn_case.ex (shows auto-imported LiveViewTest subset and PhoenixTest)	https://hexdocs.pm/phoenix_test/PhoenixTest.html https://hexdocs.pm/phoenix_live_view/Phoenix.LiveViewTest.html	test/music_library_web/components/chat_test.exs test/music_library_web/components/release_test.exs test/music_library_web/live/artist_live/show_test.exs test/music_library_web/live/collection_live/index_test.exs test/music_library_web/live/maintenance_live/index_test.exs test/music_library_web/live/online_store_template_live/index_test.exs test/music_library_web/live/record_set_live/index_test.exs test/music_library_web/live/record_set_live/show_test.exs test/music_library_web/live/scrobble_live/index_test.exs test/music_library_web/live/scrobble_live/release_group_show_test.exs test/music_library_web/live/scrobble_live/release_show_test.exs test/music_library_web/live/scrobble_rules_live/index_test.exs test/music_library_web/live/scrobbled_tracks_live/index_test.exs test/music_library_web/live/scrobbled_tracks_live/rule_picker_test.exs test/music_library_web/live/stats_live/top_albums_test.exs test/music_library_web/live/wishlist_live/index_test.exs test/music_library_web/live_helpers/record_actions_test.exs	medium	10000

Description

Audit all LiveView and component tests that mix LiveViewTest and PhoenixTest, and eliminate LiveViewTest usage where possible. The project's ConnCase auto-imports both frameworks, creating unnecessary dual-framework complexity.

The work is broken into 6 waves by difficulty, each tracked as a subtask.

Acceptance Criteria

• #1 All 17 files are classified as fully eliminable, partially eliminable, or blocked with clear rationale for each
• #2 Three blocking patterns (send_update/3, send(view.pid), live_isolated) are documented with suggested workarounds
• #3 A concrete migration order is proposed, prioritizing low-risk fully-eliminable files first
• #4 Cost estimates (effort level: low/medium/high) are assigned to each file or group of files

Implementation Notes

Key challenges discovered during execution

1. PhoenixTest can't click <span> elements (Fluxon .badge) — only <a> (click_link) and <button> (click_button). HTML changes needed for badge-based interactions.

2. Fluxon input labels using data-part="field" wrapper without separate visible text labels don't match fill_in. Workaround: visit with query params to trigger handle_params search.

3. LiveComponent modals with phx-target don't respond to URL query params — need actual form interaction, which is harder with PhoenixTest when labels are missing.

4. trigger_hook in PhoenixTest expects JSON-encoded values, not Elixir maps. Different API from LiveViewTest's render_hook.

5. render_async/1 is auto-imported by ConnCase — can use unwrap(&render_async/1) without any explicit import. This is the only LiveViewTest function that remains needed for async data loading.