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refactor(display): run() stage 2 - an Arbiter decides the scheduled-off blank, follower and WiFi notice, no behaviour change (#733)

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run() stage 2: a pure Arbiter.decide() (src/display_arbiter.py) chooses scheduled-off, follower and WiFi notices; everything else takes the existing path. Golden traces byte-identical.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Chuck
2026-10-02 22:30:52 -04:00
committed by GitHub
co-authored by Claude Opus 5.5
parent 084697346b
commit a5ec645d25
8 changed files with 582 additions and 40 deletions
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test/test_handover_scroll_state.py
+14 -4
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@@ -675,30 +675,40 @@ class TestTheControllersOwnScreens:
_push(dm, (255, 0, 0)) # the ticker's last frame
flags = _record_scrolling(dm, monkeypatch)
c = _core_screen_controller(dm)
DisplayController._blank_while_scheduled_off(c)
DisplayController._blank_while_scheduled_off(c, 60.0)
assert dm._presented[-1].getpixel((10, 30)) == (0, 0, 0)
assert flags == [False] # a static frame, not a freeze
assert not dm.is_currently_scrolling()
c._sleep_with_plugin_updates.assert_called_once_with(60)
def test_the_wifi_notice_shows_none_of_the_ticker(self, dm, monkeypatch):
from src.display_arbiter import WifiNotice
from src.display_controller import DisplayController
dm._scan_lag_bands = [(24, 48, 1)]
dm.set_scrolling_state(True, 1)
_push(dm, (255, 0, 0))
flags = _record_scrolling(dm, monkeypatch)
c = _core_screen_controller(dm)
c._check_wifi_status_message.return_value = {"message": "x", "expires_at": 1e12}
c._display_wifi_status_message.side_effect = lambda _s: _push(dm, (0, 0, 255)) and True
assert DisplayController._show_wifi_notice(c) is True
notice = WifiNotice(message="x", expires_at=1e12)
assert DisplayController._show_wifi_notice(c, notice, 0.5) is True
assert dm._presented[-1].getpixel((10, 30)) == (0, 0, 255)
assert flags == [False]
def test_no_notice_leaves_the_scroll_alone(self, dm):
"""With no notice the Arbiter does not pick the WiFi screen, so
nothing ends the scroll."""
from src.display_arbiter import Arbiter, ArbiterState, Source
from src.display_controller import DisplayController
dm.set_scrolling_state(True, 2)
c = _core_screen_controller(dm)
c.is_display_active = True
c.on_demand_schedule_override = False
c.sync_manager.is_follower_active.return_value = False
c._read_wifi_notice = types.MethodType(DisplayController._read_wifi_notice, c)
c._check_wifi_status_message.return_value = None
assert DisplayController._show_wifi_notice(c) is False
inputs = DisplayController._arbiter_inputs(c)
assert inputs.wifi_notice is None
assert Arbiter.decide(ArbiterState(), inputs, 0.0).source is Source.LEGACY
assert dm.is_currently_scrolling()
assert dm._frame_hold == 2