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Fix sandbox file write issue: use start-delay-ms for display helper

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The sandboxed XCTest runner can't write the start signal file to /tmp/.
Added --start-delay-ms to create-virtual-display.m as alternative to
--start-path. CI uses 10s delay so the test captures baseline render
stats before churn begins. Test skips start signal write when
pre-launched.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
austinpower1258 2026-03-23 04:16:57 -07:00
parent 0c4415ceba
commit 82a9ccf218
3 changed files with 20 additions and 9 deletions
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9
.github/workflows/ci.yml vendored
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@ -523,15 +523,18 @@ jobs:
for attempt in 1 2; do
cleanup 2>/dev/null || true
# Launch display helper from shell (non-sandboxed)
# Launch display helper from shell (non-sandboxed).
# Use --start-delay-ms instead of --start-path because the XCTest
# runner is sandboxed and can't write to /tmp/ for the start signal.
# 10s delay gives the test time to capture baseline render stats.
"$HELPER_PATH" \
--modes "1920x1080,1728x1117,1600x900,1440x810" \
--ready-path "$DISPLAY_READY" \
--display-id-path "$DISPLAY_ID_PATH" \
--start-path "$DISPLAY_START" \
--done-path "$DISPLAY_DONE" \
--iterations 40 \
--interval-ms 40 \
--start-delay-ms 10000 \
> "$HELPER_LOG" 2>&1 &
HELPER_PID=$!
@ -619,7 +622,7 @@ jobs:
# Write manifests so test can find the pre-launched state
MANIFEST_PATH="/tmp/cmux-ui-test-display-harness.json"
cat >"$MANIFEST_PATH" <<MANIFEST_EOF
{"readyPath":"$DISPLAY_READY","displayIDPath":"$DISPLAY_ID_PATH","startPath":"$DISPLAY_START","donePath":"$DISPLAY_DONE","logPath":"$HELPER_LOG"}
{"readyPath":"$DISPLAY_READY","displayIDPath":"$DISPLAY_ID_PATH","donePath":"$DISPLAY_DONE","logPath":"$HELPER_LOG"}
MANIFEST_EOF
PRELAUNCH_PATH="/tmp/cmux-ui-test-prelaunch.json"