test(ci): make queue guard harness deterministic

Refs #1019

packages/mosaic/framework/tools/git/test-ci-queue-wait-tristate.sh

@@ -9,6 +9,8 @@ WORK_DIR="${MOSAIC_TEST_WORK_DIR:-$PWD/.mosaic-test-work/ci-queue-wait-tristate}
 REPO_DIR="$WORK_DIR/repo"
 STUB_DIR="$WORK_DIR/stubs"
 AUDIT_LOG="$WORK_DIR/audit/ci-queue-wait.jsonl"
+STATUS_OBSERVED="$WORK_DIR/status-observed"
+CLOCK_LOG="$WORK_DIR/clock.log"
 FEATURE_BRANCH="fix/rm-03-fixture"
 
 rm -rf "$WORK_DIR"
@@ -44,6 +46,7 @@ case "$url" in
         fi
         ;;
     */status)
+        : > "${MOSAIC_STUB_STATUS_OBSERVED:?}"
         case "${MOSAIC_STUB_STATUS_MODE:?}" in
             success)   printf '%s' '{"state":"success","statuses":[{"status":"success"}]}' ;;
             pending)   printf '%s' '{"state":"pending","statuses":[{"status":"pending","context":"ci/test"}]}' ;;
@@ -63,7 +66,31 @@ case "$url" in
     *) echo "unexpected curl URL: $url" >&2; exit 2 ;;
 esac
 SH
-chmod +x "$STUB_DIR/curl"
+
+cat > "$STUB_DIR/date" <<'SH'
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ "$#" -ne 1 || "$1" != "+%s" ]]; then
+    echo "unexpected date invocation: $*" >&2
+    exit 2
+fi
+
+if [[ -e "${MOSAIC_STUB_STATUS_OBSERVED:?}" ]]; then
+    printf 'date-phase=after-status\n' >> "${MOSAIC_STUB_CLOCK_LOG:?}"
+    printf '2000\n'
+else
+    printf 'date-phase=before-status\n' >> "${MOSAIC_STUB_CLOCK_LOG:?}"
+    printf '1000\n'
+fi
+SH
+
+cat > "$STUB_DIR/sleep" <<'SH'
+#!/usr/bin/env bash
+set -euo pipefail
+printf 'sleep-after-status=%s\n' "$*" >> "${MOSAIC_STUB_CLOCK_LOG:?}"
+SH
+chmod +x "$STUB_DIR/curl" "$STUB_DIR/date" "$STUB_DIR/sleep"
 
 run_guard() {
     local status_mode="$1"
@@ -83,13 +110,36 @@ run_guard() {
             export GITEA_URL=https://git.example.test
             export MOSAIC_STUB_STATUS_MODE="$status_mode"
         fi
+        rm -f "$STATUS_OBSERVED" "$CLOCK_LOG"
         export MOSAIC_STUB_URL_LOG="$WORK_DIR/urls.log"
+        export MOSAIC_STUB_STATUS_OBSERVED="$STATUS_OBSERVED"
+        export MOSAIC_STUB_CLOCK_LOG="$CLOCK_LOG"
         export MOSAIC_CI_QUEUE_AUDIT_LOG="$audit_log"
-        "$SCRIPT_DIR/ci-queue-wait.sh" --purpose "${MOSAIC_TEST_PURPOSE:-push}" -t 0 -i 0 "$@"
+        # Provider observation is the synchronization event. The one-second
+        # timeout is subject semantics under virtual time, never a wall wait.
+        "$SCRIPT_DIR/ci-queue-wait.sh" --purpose "${MOSAIC_TEST_PURPOSE:-push}" -t 1 -i 1 "$@"
     )
 }
 
 failures=0
+assert_provider_observed() {
+    local name="$1" require_expiration="${2:-0}"
+    if [[ ! -e "$STATUS_OBSERVED" ]]; then
+        echo "FAIL $name: status provider was not observed" >&2
+        failures=$((failures + 1))
+    fi
+    if [[ ! -s "$CLOCK_LOG" ]] || ! grep -q '^date-phase=before-status$' "$CLOCK_LOG"; then
+        echo "FAIL $name: virtual clock interception did not run before provider observation" >&2
+        failures=$((failures + 1))
+    fi
+    if [[ "$require_expiration" -eq 1 ]]; then
+        if ! grep -q '^sleep-after-status=' "$CLOCK_LOG" || ! grep -q '^date-phase=after-status$' "$CLOCK_LOG"; then
+            echo "FAIL $name: pending path did not expire after provider observation" >&2
+            failures=$((failures + 1))
+        fi
+    fi
+}
+
 run_assertion() {
     local name="$1" expected_rc="$2" status_mode="$3" required_text="$4"
     local output rc
@@ -124,6 +174,13 @@ run_assertion() {
         printf '%s\n' "$output" >&2
         failures=$((failures + 1))
     fi
+    if [[ "$status_mode" != "credential-unresolvable" ]]; then
+        if [[ "$status_mode" == "pending" ]]; then
+            assert_provider_observed "$name" 1
+        else
+            assert_provider_observed "$name"
+        fi
+    fi
 }
 
 set -e
@@ -160,6 +217,7 @@ if [[ "$merge_unreachable_output" != *"CANNOT_ASSERT"* ]]; then
     echo "FAIL merge-provider-unreachable: expected loud CANNOT_ASSERT diagnostic" >&2
     failures=$((failures + 1))
 fi
+assert_provider_observed merge-provider-unreachable
 merge_audit_lines_after=$(wc -l < "$AUDIT_LOG")
 if [[ "$merge_audit_lines_after" -le "$merge_audit_lines_before" ]]; then
     echo "FAIL merge-provider-unreachable: expected an additional audit record" >&2
@@ -223,6 +281,7 @@ if [[ "$audit_failure_output" != *"audit"* ]]; then
     echo "FAIL audit-unavailable: expected loud audit failure diagnostic" >&2
     failures=$((failures + 1))
 fi
+assert_provider_observed audit-unavailable
 
 if [[ "$failures" -ne 0 ]]; then
     echo "ci-queue-wait tri-state regression failed ($failures assertions)" >&2