keep web requests off rebuild path

scripts/test_dependency_invalidation.sh

@@ -11,6 +11,7 @@ if [[ -z "$bin_directory" && -r /etc/uce/settings.cfg ]]; then
 fi
 bin_directory="${bin_directory:-/tmp/uce/work}"
 cache_dir=""
+http_host="${UCE_TEST_HTTP_HOST:-uce.openfu.com}"
 
 cleanup() {
 	rm -rf "$source_dir"
@@ -43,9 +44,28 @@ assert_marker() {
 	fi
 }
 
+http_marker() {
+	curl -fsS -H "Host: $http_host" "http://127.0.0.1/$test_name/parent.uce"
+}
+
 assert_marker parent dependency-marker-a
+if [[ "$(http_marker)" != *"dependency-marker-a"* ]]; then
+	echo "HTTP warm-up did not return dependency-marker-a" >&2
+	exit 1
+fi
 
 sed -i 's/dependency-marker-a/dependency-marker-b/' "$source_dir/child.uce"
+started_at=$(date +%s%N)
+http_during_rebuild=$(http_marker)
+elapsed_ms=$(( ($(date +%s%N) - started_at) / 1000000 ))
+if [[ "$http_during_rebuild" != *"dependency-marker-a"* && "$http_during_rebuild" != *"dependency-marker-b"* ]]; then
+	echo "HTTP rebuild request returned neither complete artifact: $http_during_rebuild" >&2
+	exit 1
+fi
+if (( elapsed_ms >= 2000 )); then
+	echo "HTTP request spent ${elapsed_ms}ms rebuilding a stale artifact" >&2
+	exit 1
+fi
 assert_marker parent dependency-marker-b
 
 # A proactive rebuild owns these same per-unit locks. While it publishes fresh