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Hermes Agent
63 lines
2.4 KiB
Python
63 lines
2.4 KiB
Python
"""Regression tests for #1360: streaming must not re-pin user scroll."""
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from pathlib import Path
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REPO = Path(__file__).parent.parent
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UI_JS = (REPO / "static" / "ui.js").read_text(encoding="utf-8")
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STYLE_CSS = (REPO / "static" / "style.css").read_text(encoding="utf-8")
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def _extract_function(src: str, name: str) -> str:
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marker = f"function {name}("
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idx = src.find(marker)
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assert idx != -1, f"{name} not found"
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depth = 0
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for i, ch in enumerate(src[idx:], idx):
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if ch == "{":
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depth += 1
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elif ch == "}":
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depth -= 1
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if depth == 0:
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return src[idx:i + 1]
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raise AssertionError(f"Could not extract {name}")
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def test_messages_scroller_disables_browser_scroll_anchoring():
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assert "overflow-anchor:none" in STYLE_CSS, (
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"#messages must disable browser scroll anchoring so tool/card inserts "
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"cannot yank the transcript while the user reads earlier content."
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)
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def test_scroll_repin_dead_zone_is_wider_for_mac_app_windows():
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assert "clientHeight<250" in UI_JS, (
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"The near-bottom re-pin threshold should be at least 250px so small "
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"macOS app windows and trackpad momentum do not re-pin too eagerly."
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)
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def test_queue_card_measurement_does_not_force_repin_during_streaming():
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fn = _extract_function(UI_JS, "_renderQueueChips")
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measurement_idx = fn.find("setTimeout(()=>")
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assert measurement_idx != -1, "queue card measurement timeout not found"
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measurement_block = fn[measurement_idx:measurement_idx + 500]
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assert "S.activeStreamId" in measurement_block
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assert "scrollIfPinned()" in measurement_block
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assert "!S.activeStreamId" in measurement_block
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assert "scrollToBottom()" in measurement_block
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assert measurement_block.find("scrollIfPinned()") < measurement_block.find("scrollToBottom()")
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def test_queue_pill_click_does_not_force_repin_during_streaming():
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fn = _extract_function(UI_JS, "_updateQueuePill")
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click_idx = fn.find("pill.onclick=()=>")
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assert click_idx != -1, "queue pill click handler not found"
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click_block = fn[click_idx:click_idx + 700]
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assert "S.activeStreamId" in click_block
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assert "scrollIfPinned()" in click_block
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assert "!S.activeStreamId" in click_block
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assert "scrollToBottom()" in click_block
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assert click_block.find("scrollIfPinned()") < click_block.find("scrollToBottom()")
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