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stack/packages/mosaic/framework/tools/git/test-pr-merge-fork-ci-status.sh
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2026-08-20 20:18:59 +00:00

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#!/usr/bin/env bash
# B1 (stack #1215, gate-merge-01): for a fork PR the merge queue guard must
# read CI status against the BASE repository. Woodpecker posts statuses on the
# base repo; pr-metadata's headRepository names the fork, and passing it to
# ci-queue-wait yields statuses:null -> state=malformed rc=3 on every fork PR.
#
# This fixture omits baseRepository entirely (the pre-B1 normalizer's shape),
# so the guard must fall back to the origin repo — and must NEVER see the fork.
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WORK_DIR="${MOSAIC_TEST_WORK_DIR:-$PWD/.mosaic-test-work/pr-merge-fork-ci-status}"
FIXTURE_DIR="$WORK_DIR/tools/git"
CALL_LOG="$WORK_DIR/queue-call.log"
rm -rf "$WORK_DIR"
mkdir -p "$FIXTURE_DIR"
cp "$SCRIPT_DIR/pr-merge.sh" "$FIXTURE_DIR/pr-merge.sh"
cp "$SCRIPT_DIR/detect-platform.sh" "$FIXTURE_DIR/detect-platform.sh"
cat > "$FIXTURE_DIR/pr-metadata.sh" <<'SH'
#!/usr/bin/env bash
printf '%s\n' '{"baseRefName":"next","headRefName":"fix/b1-fork-branch","headRefOid":"fedcba9876543210fedcba9876543210fedcba98","headRepository":"stack-mos-dt-0/stack"}'
SH
cat > "$FIXTURE_DIR/ci-queue-wait.sh" <<'SH'
#!/usr/bin/env bash
printf '%s\n' "$*" > "${MOSAIC_QUEUE_CALL_LOG:?}"
exit 42
SH
chmod +x "$FIXTURE_DIR"/*.sh
# A git repo with an origin remote, so the origin fallback resolves.
git init -q "$WORK_DIR/upstream"
git -C "$WORK_DIR/upstream" remote add origin https://git.mosaicstack.dev/mosaicstack/stack.git
set +e
(
cd "$WORK_DIR/upstream"
export MOSAIC_QUEUE_CALL_LOG="$CALL_LOG"
"$FIXTURE_DIR/pr-merge.sh" -n 1215
) >/dev/null 2>&1
rc=$?
set -e
if [[ "$rc" -ne 42 ]]; then
echo "FAIL: expected queue stub rc=42 to propagate, got $rc" >&2
exit 1
fi
if [[ ! -s "$CALL_LOG" ]]; then
echo "FAIL: merge wrapper did not invoke the queue guard" >&2
exit 1
fi
if grep -q -- '-R stack-mos-dt-0/stack' "$CALL_LOG"; then
echo "FAIL: queue guard received the FORK repository for CI status (B1 regression)" >&2
cat "$CALL_LOG" >&2
exit 1
fi
if ! grep -q -- '-R mosaicstack/stack' "$CALL_LOG"; then
echo "FAIL: queue guard did not receive the base (origin) repository" >&2
cat "$CALL_LOG" >&2
exit 1
fi
if ! grep -q -- '-B fix/b1-fork-branch' "$CALL_LOG"; then
echo "FAIL: queue guard did not receive the PR head branch" >&2
cat "$CALL_LOG" >&2
exit 1
fi
if ! grep -q -- '--sha fedcba9876543210fedcba9876543210fedcba98' "$CALL_LOG"; then
echo "FAIL: queue guard did not receive the exact PR head SHA" >&2
cat "$CALL_LOG" >&2
exit 1
fi
echo "pr-merge fork-PR CI-status repository regression passed"