fix(test): execute docker observability proof

test/scripts/docker-e2e-observability.test.ts

@@ -1,18 +1,58 @@
 // Docker E2E Observability tests cover docker e2e observability script behavior.
-import { readFileSync } from "node:fs";
-import { describe, expect, it } from "vitest";
+import { spawnSync } from "node:child_process";
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { afterEach, describe, expect, it } from "vitest";
+
+const tempDirs: string[] = [];
+
+function makeTempDir(): string {
+  const dir = mkdtempSync(path.join(tmpdir(), "openclaw-docker-e2e-observability-"));
+  tempDirs.push(dir);
+  return dir;
+}
+
+afterEach(() => {
+  for (const dir of tempDirs.splice(0)) {
+    rmSync(dir, { force: true, recursive: true });
+  }
+});
+
+function successTail(scriptPath: string): string {
+  const script = readFileSync(scriptPath, "utf8");
+  const index = script.lastIndexOf('if [ "$status" -ne 0 ]; then');
+  if (index === -1) {
+    throw new Error(`missing status tail in ${scriptPath}`);
+  }
+  return script.slice(index);
+}
+
+function runSuccessTail(scriptPath: string) {
+  const tempDir = makeTempDir();
+  const clientLog = path.join(tempDir, "client.log");
+  writeFileSync(clientLog, "client proof log\n", "utf8");
+  const harness = [
+    "set -euo pipefail",
+    `CLIENT_LOG=${JSON.stringify(clientLog)}`,
+    "status=0",
+    "docker_e2e_print_log() {",
+    '  printf \'LOG:%s\\n\' "$(cat "$1")"',
+    "}",
+    successTail(scriptPath),
+  ].join("\n");
+
+  return spawnSync("bash", ["-c", harness], { encoding: "utf8" });
+}
 
 describe("Docker E2E observability", () => {
   it.each(["scripts/e2e/mcp-channels-docker.sh", "scripts/e2e/cron-mcp-cleanup-docker.sh"])(
     "prints successful MCP client proof logs from %s",
     (scriptPath) => {
-      const script = readFileSync(scriptPath, "utf8");
-      const successTail = script.slice(script.lastIndexOf('if [ "$status" -ne 0 ]; then'));
+      const result = runSuccessTail(scriptPath);
 
-      expect(successTail).toContain('docker_e2e_print_log "$CLIENT_LOG"');
-      expect(successTail.indexOf('docker_e2e_print_log "$CLIENT_LOG"')).toBeLessThan(
-        successTail.indexOf('echo "OK"'),
-      );
+      expect(result.status, result.stderr).toBe(0);
+      expect(result.stdout.trim().split("\n")).toEqual(["LOG:client proof log", "OK"]);
     },
   );
 });