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"""
A group always opens on a tab that exists.
The landing tab comes from a preference and is chosen at mount; which
applications the group runs comes from the node, several awaits later. When the
two disagree — Chat disabled here while 'chat' is the default, or a preferred
app this group does not offer — the page used to render no panel at all, with
no tab shown active and nothing on screen to explain it.
A string comparison against a list that arrives later is not something reading
`group-page.js` makes obvious, so this renders the real `GroupPage` against a
stub node and reads the tab bar back.
"""
import json
import shutil
import subprocess
from pathlib import Path
import pytest
HARNESS = Path(__file__).parent / "harness" / "group_tab_probe.py"
STATIC = Path(__file__).resolve().parents[1] / "src" / "meshbay_hub" / "static"
pytestmark = pytest.mark.skipif(
shutil.which("google-chrome") is None or not (STATIC / "group-page.js").exists(),
reason="Chrome or the SPA sources are not available")
@pytest.fixture(scope="module")
def cases():
run = subprocess.run(["python3", str(HARNESS)], capture_output=True, timeout=180)
assert run.returncode == 0, run.stderr.decode()[-2000:]
return {c["name"]: c for c in json.loads(run.stdout.decode())}
# Asserted by position, not by label: the harness renders in whatever language
# the browser resolves to.
def test_every_case_lands_somewhere(cases):
"""The bug, stated once: a tab bar with nothing selected and nothing under
it."""
for name, case in cases.items():
assert case["active"] >= 0, f"{name}: no tab is active"
assert case["panelDrawn"], f"{name}: a tab is active but no panel was drawn"
def test_the_default_is_the_first_app(cases):
"""Nothing changes for a group running everything."""
case = cases["every app, default chat"]
assert case["active"] == 0
def test_a_disabled_default_falls_back(cases):
"""'chat' is the default for everyone, and a group may not run it."""
case = cases["chat disabled"]
assert case["active"] == 0, "should have fallen back to the group's first app"
assert len(case["tabs"]) == 3, "Files, Videos and Settings, with no Chat tab"
def test_a_preference_for_an_absent_app_falls_back(cases):
"""The preference is global; the app list is per group."""
assert cases["preferred app absent"]["active"] == 0
def test_a_preference_that_names_nothing_falls_back(cases):
"""A stale or hand-edited preference must not strand anyone either."""
assert cases["preference names nothing real"]["active"] == 0
def test_a_preference_the_group_offers_is_kept(cases):
"""The fallback must not become 'always the first app'."""
case = cases["preferred app present"]
assert case["active"] == 2, (
"Videos was enabled and preferred; the reader should have landed on it, "
f"not on tab {case['active']}")
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