Files
hermes-webui/tests/test_issue734_message_windowing.py
T
fe12eebbf3 perf(chat): virtualize long message transcripts (#500) (#4214)
* perf(chat): virtualize long message transcripts (#500)

* fix(chat): preserve virtual height cache on append (#500)

* fix(chat): bound virtual tail follow-up (#500)

* fix(chat): surface older history and bound virtual rerenders (#500)

* fix(chat): stabilize virtual history fallback (#500)

* fix(chat): preserve virtual compression anchors (#500)

* Keep virtualization regressions aligned with rebased sources (#500)

* fix(chat): preserve virtual heights across prepends (#500)

* test(update): isolate restart timing checks (#814)

* fix(chat): restore render contracts around virtual cache

* fix(chat): preserve legacy assistant anchor predicates

* fix(#3714): restore worklog-disclosure capture after HTML-cache early-return

Deep-review finding: the capture of _captureWorklogDetailDisclosureState was
moved before the HTML-cache fast-path return, failing the invariant test
test_render_rebuild_preserves_worklog_detail_disclosure_click_state (it must
not traverse the previous-session DOM when the cache path returns early).
Moved it back to just before inner.innerHTML='' (after the cache return).

Co-authored-by: Rod Boev <rod.boev@gmail.com>

* fix(#3714): restore Transparent Stream rehydration in HTML-cache fast path

Full-suite gate caught test_issue3820_chat_activity_display_mode failure: the
virtualization rewrite of the renderMessages HTML-cache fast-path block dropped
the _rehydrateTransparentStreamDom(inner) call (master has it; PR had 2 of 3
occurrences). On a cache-restore session switch, Transparent Stream controls
lost their property-assigned handlers. Restored the call in the same position
master has it (right after _sessionHtmlCacheSid=sid).

Co-authored-by: Rod Boev <rod.boev@gmail.com>

* fix(#3714): preserve live turn on scroll-rebuild even with zero streamed text

Opus ship-review residual (now fixed, not deferred): the live-turn re-attach
after a scroll-triggered virtualized rebuild was gated on _preservedLen>0, so a
turn showing only Activity/tool/worklog blocks with no streamed text yet (mid
tool-call) would not be preserved — scrolling up into history on a >80-row
transcript mid-stream could blink those live-only blocks for a frame. Broaden
the gate to also restore when the preserved turn has MORE structural blocks than
the rebuilt (lagging-S.messages) turn. Hoisted the _structuralCount helper above
the gate; whole-turn-vs-segment restore logic unchanged.

Co-authored-by: Rod Boev <rod.boev@gmail.com>

* chore(release): stamp v0.51.423 (Release OJ) for #500 transcript virtualization

---------

Co-authored-by: Rod Boev <rod.boev@gmail.com>
Co-authored-by: nesquena-hermes <agent@nesquena-hermes>
2026-06-14 19:11:32 -07:00

62 lines
3.5 KiB
Python

from pathlib import Path
REPO = Path(__file__).resolve().parents[1]
UI_JS = (REPO / "static" / "ui.js").read_text(encoding="utf-8")
SESSIONS_JS = (REPO / "static" / "sessions.js").read_text(encoding="utf-8")
CSS = (REPO / "static" / "style.css").read_text(encoding="utf-8")
def test_message_virtualization_switches_render_messages_to_scroll_driven_window():
assert "function _messageVirtualWindow(opts)" in UI_JS
assert "function _messageVirtualKeepTailCount()" in UI_JS
assert "const virtualWindow=_currentMessageVirtualWindow(visWithIdx,_messageVirtualKeepTailCount())" in UI_JS
assert "const renderHeadVisWithIdx=visWithIdx.slice(windowStart, windowEnd)" in UI_JS
assert "const renderTailStart=virtualWindow.virtualized?Math.max(windowEnd, virtualWindow.tailStart):windowEnd" in UI_JS
assert "const renderTailVisWithIdx=virtualWindow.virtualized&&renderTailStart<visWithIdx.length" in UI_JS
assert "const renderVisWithIdx=renderHeadVisWithIdx.concat(renderTailVisWithIdx)" in UI_JS
assert "if(virtualWindow.virtualized&&virtualWindow.bottomPad>0&&vi===headRenderCount)" in UI_JS
def test_load_earlier_only_pages_server_history_and_preserves_scroll():
assert "function _wireMessageWindowLoadEarlierButton()" in UI_JS
assert "if(typeof _loadOlderMessages==='function') _loadOlderMessages();" in UI_JS
assert "if(hasServerOlder){" in UI_JS
assert "if(virtualWindow.virtualized&&virtualWindow.topPad>0)" in UI_JS
assert "_messageRenderWindowSize=_currentMessageRenderWindowSize()+Math.max(addedRenderable, MESSAGE_RENDER_WINDOW_DEFAULT);" in SESSIONS_JS
assert "renderMessages({ preserveScroll: true });" in SESSIONS_JS
assert "_scheduleMessageVirtualizedRender();" in UI_JS
def test_windowed_render_keeps_streaming_and_tool_activity_anchored_to_rendered_messages():
assert "_scrollAfterMessageRender(preserveScroll, scrollSnapshot);" in UI_JS
assert "const assistantIdxs=[...assistantSegments.keys()].sort((a,b)=>a-b);" in UI_JS
assert "if(aIdx<assistantIdxs[0]) continue;" in UI_JS
assert "const renderedAssistantIdxs=[...assistantSegments.keys()].sort((a,b)=>a-b);" in UI_JS
assert "const seg=assistantSegments.get(mi);" in UI_JS
def test_window_state_participates_in_cache_and_cached_button_is_rewired():
assert "cached.renderWindowKey===renderWindowKey" in UI_JS
assert "cached.signature===renderSignature" in UI_JS
assert "_sessionHtmlCache.set(sid,{html:_html,msgCount,renderWindowKey,signature:renderSignature})" in UI_JS
assert "_messageVirtualWindowKey=renderWindowKey" in UI_JS
assert "function _wireMessageWindowLoadEarlierButton()" in UI_JS
assert "_wireMessageWindowLoadEarlierButton();" in UI_JS
assert UI_JS.count("_wireMessageWindowLoadEarlierButton();") >= 2
def test_virtualization_affordances_have_styling_hooks():
assert "message-window-load-earlier" in UI_JS
assert ".message-window-load-earlier" in CSS
assert ".message-virtual-spacer" in CSS
assert "border-radius:999px" in CSS
def test_measurement_rerenders_are_bounded_per_virtual_window_cycle():
assert "const MESSAGE_VIRTUAL_MEASUREMENT_MAX_RERENDERS=2;" in UI_JS
assert "function _messageVirtualMeasurementCycleKeyFor(windowMetrics)" in UI_JS
assert "function _scheduleMessageVirtualMeasurementRefresh(windowMetrics)" in UI_JS
assert "if(_messageVirtualMeasurementRetryCount>=MESSAGE_VIRTUAL_MEASUREMENT_MAX_RERENDERS) return;" in UI_JS
assert "_scheduleMessageVirtualMeasurementRefresh(virtualWindow);" in UI_JS
assert "_markMessageVirtualMeasurementsSettled(virtualWindow);" in UI_JS