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SoulSync/tests/test_playlist_edit.py

81 lines
2.9 KiB

"""Extreme battery for sync-editor add/remove planners (#768 Bug C)."""
from __future__ import annotations
from core.sync.playlist_edit import plan_playlist_add, remove_one_occurrence
# ── plan_playlist_add: link must not duplicate ────────────────────────────
def test_link_to_existing_track_does_not_insert():
# The reported loop: matching an unmatched source to a track already in
# the playlist (an "extra") must NOT add a second copy.
plan = plan_playlist_add(["a", "b", "nv72"], "nv72", is_link=True)
assert plan["should_insert"] is False
assert plan["new_ids"] == ["a", "b", "nv72"] # unchanged
def test_link_to_absent_track_inserts():
plan = plan_playlist_add(["a", "b"], "nv99", is_link=True, position=1)
assert plan["should_insert"] is True
assert plan["new_ids"] == ["a", "nv99", "b"]
def test_non_link_add_always_inserts_even_if_present():
# A plain add (no source link) may legitimately duplicate.
plan = plan_playlist_add(["a", "b"], "a", is_link=False)
assert plan["should_insert"] is True
assert plan["new_ids"].count("a") == 2
def test_add_appends_when_no_position():
plan = plan_playlist_add(["a", "b"], "c", is_link=False)
assert plan["new_ids"] == ["a", "b", "c"]
def test_add_clamps_out_of_range_position():
assert plan_playlist_add(["a"], "c", is_link=False, position=99)["new_ids"] == ["a", "c"]
assert plan_playlist_add(["a"], "c", is_link=False, position=-5)["new_ids"] == ["c", "a"]
def test_add_stringifies_ids():
plan = plan_playlist_add([1, 2, 72], 72, is_link=True)
assert plan["should_insert"] is False
# ── remove_one_occurrence: remove ONE, not all ────────────────────────────
def test_removes_only_one_of_duplicates():
# The #768 delete bug: two copies (pos 72, 73) — removing must drop ONE.
new_ids, removed = remove_one_occurrence(["a", "nv72", "nv72", "b"], "nv72")
assert removed is True
assert new_ids == ["a", "nv72", "b"] # one copy survives
def test_removes_exact_position_when_given():
new_ids, removed = remove_one_occurrence(["x", "x", "x"], "x", position=1)
assert removed is True
assert new_ids == ["x", "x"]
def test_falls_back_to_first_when_position_mismatches():
new_ids, removed = remove_one_occurrence(["a", "b", "c"], "b", position=0)
assert removed is True
assert new_ids == ["a", "c"]
def test_remove_absent_id_reports_not_removed():
new_ids, removed = remove_one_occurrence(["a", "b"], "zzz")
assert removed is False
assert new_ids == ["a", "b"]
def test_remove_single_occurrence():
new_ids, removed = remove_one_occurrence(["a", "b", "c"], "b")
assert (new_ids, removed) == (["a", "c"], True)
def test_remove_stringifies():
new_ids, removed = remove_one_occurrence([1, 2, 2, 3], 2)
assert removed and new_ids == ["1", "2", "3"]