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test: exercise renderer scroll restore ownership

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This commit is contained in:
Frank Song 2026-07-28 21:42:09 +08:00
parent fd1879418d
commit c69f1a73dc
1 changed files with 33 additions and 13 deletions
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46
tests/test_issue5637_stale_anchor_guard.py
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@ -113,6 +113,7 @@ def _live_render_ownership_harness(*, move_to_bottom: bool) -> str:
"""Compose real input production with the production queued live-render restore."""
js = UI_JS_PATH.read_text(encoding="utf-8")
functions = [
"renderLiveAnchorActivityScene",
"_recordNonMessageScrollIntent",
"_captureMessageScrollSnapshot",
"_messageScrollSnapshotInputChanged",
@ -135,7 +136,6 @@ let _lastScrollTop=null, _lastMessageClientHeight=null;
let _programmaticScroll=false, _programmaticScrollSetAt=0;
let recordWrites=true;
const callbacks=[];
let delayedSnapshotPinned=null;
const performance={{now(){{return 1;}}}};
const el={{
scrollHeight:90453, clientHeight:427,
@ -147,7 +147,20 @@ const el={{
}};
const document={{getElementById(id){{return id==='messages'?el:null;}}}};
const msgInner={{style:{{}},dataset:{{}}}};
function $(id){{return id==='messages'?el:id==='msgInner'?msgInner:null;}}
const emptyState={{style:{{display:''}}}};
const turn={{
dataset:{{}},
setAttribute(){{}},
querySelectorAll(){{return [];}},
}};
const blocks={{querySelectorAll(){{return [];}}}};
function $(id){{
if(id==='messages') return el;
if(id==='msgInner') return msgInner;
if(id==='emptyState') return emptyState;
if(id==='liveAssistantTurn') return turn;
return null;
}}
function _captureMessageViewportAnchor(){{return null;}}
function _shouldFollowMessagesOnDomReplace(){{return true;}}
function _deferClearProgrammaticScroll(){{}}
@ -159,21 +172,30 @@ function _isTouchLikeMessageViewport(){{return false;}}
function _recentMessageScrollIntent(){{return false;}}
function _recentMessageTouchScrollIntent(){{return false;}}
function _restoreMessageScrollSnapshotSameFrameFallback(){{}}
function requestAnimationFrame(callback){{callbacks.push(()=>{{delayedSnapshotPinned=snapshot.pinned===true; callback();}});}}
const snapshot=_captureMessageScrollSnapshot();
const capturedPinned=snapshot.pinned===true;
const scrollRebuildGuard=_prepareLiveAnchorScrollRebuildGuard(snapshot);
_restoreMessageScrollSnapshotSameFrame(snapshot);
function requestAnimationFrame(callback){{callbacks.push(callback);}}
function chatActivityMode(){{return 'compact_worklog';}}
function isSimplifiedToolCalling(){{return true;}}
const S={{session:{{session_id:'sid-1',pending_started_at:1}},activeStreamId:'stream-1'}};
function _anchorSceneRowsForRendering(){{return [];}}
function _assistantTurnBlocks(){{return blocks;}}
function _captureWorklogDetailDisclosureState(){{return null;}}
function _anchorSceneWorklogGroup(){{return {{}};}}
function _renderAnchorSceneRowsIntoWorklog(){{return true;}}
function _restoreWorklogDetailDisclosureState(){{}}
function _startActivityElapsedTimer(){{}}
function _dedupeLiveProcessedWorklogAnchors(){{}}
function _moveLiveRunStatusToTurnEnd(){{}}
function scrollIfPinned(){{}}
const rendered=renderLiveAnchorActivityScene('stream-1',{{activity_rows:[]}},{{sessionId:'sid-1'}});
const initialWrites=writes.slice();
writes=[];
_restoreLiveAnchorScrollSnapshotAfterRebuild(snapshot,scrollRebuildGuard);
const guardQueued=callbacks.length>0;
recordWrites=false;
_recordNonMessageScrollIntent({{target:el,deltaY:{target_delta}}});
el.scrollTop={final_top};
recordWrites=true;
callbacks.shift()();
console.log(JSON.stringify({{capturedPinned,guardQueued,delayedSnapshotPinned,initialWrites,writes, finalScrollTop:el.scrollTop,
console.log(JSON.stringify({{rendered,guardQueued,initialWrites,writes, finalScrollTop:el.scrollTop,
messageUserUnpinned:_messageUserUnpinned, scrollPinned:_scrollPinned,
generation:_messageScrollInputGeneration}}));
"""
@ -183,9 +205,8 @@ def test_live_render_queue_preserves_real_upward_input_from_pinned_capture():
"""The real producer and queued live-render callback preserve upward input."""
result = json.loads(_run_node(_live_render_ownership_harness(move_to_bottom=False)))
assert result == {
"capturedPinned": True,
"rendered": True,
"guardQueued": True,
"delayedSnapshotPinned": True,
"initialWrites": [90026],
"writes": [],
"finalScrollTop": 89000,
@ -199,9 +220,8 @@ def test_live_render_queue_repins_real_downward_input_at_bottom():
"""The real producer and queued live-render callback re-pin at true bottom."""
result = json.loads(_run_node(_live_render_ownership_harness(move_to_bottom=True)))
assert result == {
"capturedPinned": False,
"rendered": True,
"guardQueued": True,
"delayedSnapshotPinned": False,
"initialWrites": [89577],
"writes": [],
"finalScrollTop": 90026,